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1996考研数学三真题和详解

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2024年5月8日发(作者:诸如柏)

1996年全国硕士研究生入学统一考试数学三试题

一、填空题(本题共5小题,每小题3分,满分15分.把答案填在题中横线上.)

(1) 设方程

xy

y

确定

y

x

的函数,则

dy

___________.

(2) 设

xf(x)dxarcsinxC

,则

1

dx

___________..

f(x)

(3) 设

x

0

,y

0

是抛物线

yax

2

bxc

上的一点,若在该点的切线过原点,则系数应满足

的关系是___________.

(4) 设

11

1

aa

2

a

3

1

22

A

a

1

2

a

2

a

3

n1n1n1

a

2

a

3

a

1

其中

a

i

a

j

(ij;i,j1,2,

1



x

1

1

x

1

a

n



2



2

a

n

,

X

x

3

,

B

1

,









n1

a

n

1

x

n

,n)

.则线性方程组

A

T

XB

的解是___________.

(5) 设由来自正态总体

X~N(

,0.9

2

)

容量为9的简单随机样本,得样本均值

X5

,则未

知参数

的置信度为0.95的置信区间为___________.

二、选择题(本题共5小题,每小题3分,满分15分.每小题给出的四个选项中,只有一项符

合题目要求,把所选项前的字母填在题后的括号内.)

(1) 累次积分

(A)

(C)

1

2

0

d

yy

2

cos

0

f(rcos

,rsin

)rdr

可以写成 ( )

11y

2

00

xx

2

dy

00

1

f(x,y)dx

(B)

dy

1

0

f(x,y)dx

dx

0

1

0

f(x,y)dy

(D)

dx



0

f(x,y)dy

(2) 下述各选项正确的是 ( )

(A) 若

u

n1

2

n

v

n1

2

n

都收敛,则

(u

n1

2

n

n

v

n

)

2

收敛

(B)

uv

n1

nn

收敛,则

u

n1

2

n

v

n1

都收敛

(C) 若正项级数

u

n1

n

发散,则

u

n

1

n

(D) 若级数

u

n1

n

收敛,且

u

n

v

n

(n1,2,

)

,则级数

v

n

也收敛

n1

(3) 设

n

阶矩阵

A

非奇异(

n2

),

A

是矩阵

A

的伴随矩阵,则 ( )



(A)

(A)A

n1

A

(B)

(A

)

A

A

(D)

(A

)

A

n1

A

A



(C)

(A)A

n2n2

(4) 设有任意两个

n

维向量组

1

,

k

1

,

,

m

1

,,

m

,若存在两组不全为零的数

1

,,

m

,k

m

,使

(

1

k

1

)

1

(

m

k

m

)

m

(

1

k

1

)

1

(

m

k

m

)

m

0

,则

( )

(A)

1

,

(B)

1

,

,

m

1

,

,

m

1

,

,

m

都线性相关

,

m

都线性无关

,

m

m

线性无关

,

m

m

线性相关

(C)

1

1

,

(D)

1

1

,

,

m

m

,

1

1

,

,

m

m

,

1

1

,

(5) 已知

0P(B)1

P[

A

1

A

2

B]P(A

1

B)P(A

2

B)

,则下列选项成立的是( )

(A)

P[

A

1

A

2

B]P(A

1

B)P(A

2

B)

(B)

P

A

1

BA

2

B

P(A

1

B)P(A

2

B)

(C)

P

A

1

A

2

P(A

1

B)P(A

2

B)

(D)

P

B

P

A

1

P(BA

1

)P(A

2

)P(BA

2

)

三、(本题满分6分)

g(x)e

x

,x0,

f(x)

其中

g(x)

有二阶连续导数,且

g(0)1,g

(0)1

.

x

0,x0,

(1)求

f

(x)

(2)讨论

f

(x)

(,)

上的连续性.

四、(本题满分6分)

设函数

zf(u)

,方程

u

(u)

x

y

p(t)dt

确定

u

x,y

的函数,其中

f(u),

(u)

zz

p(x)

.

xy

微;

p(t)

,

(u)

连续,且

(u)1

.求

p(y)

五、(本题满分6分)

计算



0

xe

x

dx

.

(1e

x

)

2

六、(本题满分5分)

f(x)

在区间

[0,1]

上可微,且满足条件

f(1)2

1

2

0

xf(x)dx

.试证:存在

(0,1)

使

f(

)

f

(

)0.

七、(本题满分6分)

设某种商品的单价为

p

时,售出的商品数量

Q

可以表示成

Q

a

c

,其中

a、b、

pb

c

均为正数,且

abc

.

(1) 求

p

在何范围变化时,使相应销售额增加或减少.

(2) 要使销售额最大,商品单价

p

应取何值?最大销售额是多少?

八、(本题满分6分)

dy

yx

2

y

2

求微分方程的通解.

dxx

九、(本题满分8分)

0

1

设矩阵

A

0

0

100

000

.

0y1

012

(1) 已知

A

的一个特征值为3,试求

y

(2) 求矩阵

P

,使

(AP)(AP)

为对角矩阵.

十、(本题满分8分)

设向量

1

,

2

,

T

,

t

是齐次线性方程组

AX0

的一个基础解系,向量

不是方程组

AX0

的解,即

A

0

.试证明:向量组

,

1

,

2

,,

t

线性无关.

十一、(本题满分7分)

假设一部机器在一天内发生故障的概率为0.2,机器发生故障时全天停止工作,若一周5

个工作日里无故障,可获利润10万元;发生一次故障仍可获得利润5万元;发生两次故障所

获利润0元;发生三次或三次以上故障就要亏损2万元.求一周内期望利润是多少?

十二、(本题满分6分)

考虑一元二次方程

xBxC0

,其中

B、C

分别是将一枚色子(骰子)接连掷两次

先后出现的点数.求该方程有实根的概率

p

和有重根的概率

q

.

十三、(本题满分6分)

假设

X

1

,X

2

,

2

,X

n

是来自总体X的简单随机样本;已知

EX

k

a

k

(k1,2,3,4)

.

1

n

2

证明:当

n

充分大时,随机变量

Z

n

X

i

近似服从正态分布,并指出其分布参数.

n

i1

1996年全国硕士研究生入学统一考试数学三试题解析

一、填空题(本题共5小题,每小题3分,满分15分,把答案填在题中横线上.)

(1)【答案】

dx

x

1lny

【解析】方法1:方程

xy

y

两边取对数得

lnxlny

y

ylny

,再两边求微分,

11

dx

lny1

dydydx

x

lny1

0

.

xx

lny1

方法2:把

xy

y

变形得

xe

ylny

,然后两边求微分得

dxe

ylny

d

ylny

y

y

1lny

dyx

1lny

dy

,

由此可得

dy

1

dx.

x

1lny

2

3

(2)【答案】

1

3

1x

C

【解析】由

xf(x)dxarcsinxC

,两边求导数有

xf(x)

arcsinx

1

1x

2

1

x1x

2

,

f(x)

于是有

1

1

dx

x1x

2

dx

1x

2

dx

2

2

f(x)



1

22

1xd1x



2

1

2

3

1x



C

.

3

(3)【答案】

c

2

0

(或

ax

0

c

),

b

任意

a

2

【解析】对

yaxbxc

两边求导得

y

2axb,y

x

0

2ax

0

b,

所以过

x

0

,y

0

的切线方程为

yy

0

2ax

0

b



xx

0

,

2

y

ax

0

bx

0

c

2ax

0

b



xx

0

.

又题设知切线过原点

0,0

,把

xy0

代入上式,得

2

22

c.

ax

0

bx

0

c2ax

0

bx

0

,

ax

0

由于系数

a0

,所以,系数应满足的关系为

(4)【答案】

1,0,0,

c

2

0

(或

ax

0

c

),

b

任意.

a

0

T

【解析】因为

A

是范德蒙行列式,由

a

i

a

j

A

秩的关系,所以方程组

AXB

有唯一解.

根据克莱姆法则,对于

T

aa

0

.根据解与系数矩阵

ij

1

1

1

1

易见

D

1

A,D

2

D

3

T

a

1

a

2

a

3

a

n

a

1

2

2

a

2

2

a

3

2

a

n

a

1

n1

x

1

1

1

n1

x

a

2

2





n1

a

3

x

3

1

,









n1



1

a

n

x

n

D

n

0.

x

n

0

,即

1,0,0,

a

1n

x

n

b

1

,

a

2n

x

n

b

2

,

a

nn

x

n

b

n

.

所以

AXB

的解为

x

1

1,x

2

x

3

,0

.

T

【相关知识点】克莱姆法则:若线性非齐次方程组

a

11

x

1

a

12

x

2

axax

211222

a

n1

x

1

a

n2

x

2

或简记为

其系数行列式

ax

ij

j1

n

j

b

i

,i1,2,,n

a

11

D

a

21

a

n1

则方程组有唯一解

a

12

a

22

a

n2

a

1n

a

2n

a

nn

0

,

x

j

其中

D

j

是用常数项

b

1

,b

2

,

D

j

D

,j1,2,,n.

,b

n

替换

D

中第

j

列所成的行列式,即

a

11

D

j

a

21

a

n1

(5)【答案】

(4.412,5.588)

【解析】可以用两种方法求解:

a

1,j1

b

1

a

1,j1

a

2,j1

a

n,j1

a

1n

a

2n

a

nn

.

a

2,j1

b

2

a

n,j1

b

n

(1)已知方差

0.9

,对正态总体的数学期望

进行估计,可根据

X

22

1

n

N(

,0.9)

,设有

n

个样本,样本均值

X

X

i

,

n

i1

2

X

0.9

2

XE(X)

N(

,)

,将其标准化,由公式

~N(0,1)

得:

n

D(X)

n

X

~N(0,1)

1

n



X



u

1

可确定临界值

u

, 由正态分布分为点的定义

P

2



1

n

2



进而确定相应的置信区间

(xu

2

n

,xu

2

n

)

.

(2)本题是在单个正态总体方差已知条件下,求期望值

的置信区间问题.

由教材上已经求出的置信区间

xu

2

n

,xu

2

,

n

其中

P

Uu

1

,U

N(0,1)

,可以直接得出答案.

2

方法1:由题设,

1

0.95

,可见

0.05.

查标准正态分布表知分位点

u

1.96.

2

n9

,

X5

, 因此,根据

P{

X

1.96}0.95

,有

1

n

P{

5

1.96}0.95

,即

P{4.412

5.588}0.95

,

1

9

的置信度为0.95的置信区间是

(4.412,5.588)

.

方法2:由题设,

1

0.95

,

P{Uu

}P{u

Uu

}2(u

)10.95,(u

)0.975

22222

查得

u

1.96.

2

0.9

2

,

n9

,

X5

代入

(xu

2

n

,xu

2

n

)

得置信区间

(4.412,5.588)

.

二、选择题(本题共5小题,每小题3分,满分15分.每小题给出的四个选项中,只有一项符

合题目要求,把所选项前的字母填在题后的括号内.)

(1)【答案】(D)

【解析】方法1:由题设知,积分区域在极坐标系

xrcos

,yrsin

中是



D

r,

|0

,0rcos

,

2



1

1

即是由

x

y

2

x

轴在第一象限所围成的

2

4

平面图形,如右图.

由于

D

的最左边点的横坐标是

0

,最右点的横坐标是1,

下边界方程是

y0,

上边界的方程是

y

的直角坐标表示是

2

y

1

2

xx

,从而

D

2

O

1

2

1

x

D

x,y

|0x1,0yxx

2

,

故(D)正确.

方法2:采取逐步淘汰法.由于(A)中二重积分的积分区域的极坐标表示为



D

1

r,

|0

,0rsin

,

2



而(B)中的积分区域是单位圆在第一象限的部分,

(C)中的积分区域是正方形

x,y

|0x1,0y1

,

所以,他们都是不正确的.故应选(D).

(2)【答案】(A)

【解析】由于级数

u

n1

2

n

v

n1

2

n

都收敛,可见级数

u

n1

2

n

2

v

n

收敛.由不等式

22

2u

n

v

n

u

n

v

n

及比较判别法知级数

2uv

n1

2

2

n

nn

收敛,从而

2uv

n1

nn

收敛.

又因为

u

n

v

n

uv2u

n

v

n

,

即级数

2

n

u

n

v

n

n1

2

收敛,故应选(A).

1

,v

n

1

n1,2,

,可知(B)不正确.

n

2

11

u

n



2

n1,2,

,可知(C)不正确.

nn

u

n

u

n

1

n

n1

,v

n



1

n1,2,

n

,可知(D)不正确.

)

,则级数

v

n

也收敛.”

n1

注:在本题中命题(D)“若级数

u

n1

n

收敛,且

u

n

v

n

(n1,2,

不正确,这表明:比较判别法适用于正项级数收敛(或级数绝对收敛)的判别,但对任意项级数

一般是不适用的.这是任意项级数与正项级数收敛性判别中的一个根本区别.

(3)【答案】(C)

【解析】伴随矩阵的基本关系式为

AAAAAE

,



现将

A

视为关系式中的矩阵

A

,则有

A(A)AE

.



方法一:由

AA

n1

(A)

1

A

,可得

A

n1

(A

)

A

(A

)

1

A

故应选(C).



方法二:由

A(A)AE

,左乘

A

n1

A

n2

AA.

A

(AA

)(A

)

A

故应选(C).

(4)【答案】(D)

A

,即

(AE)(A

)

A

n1

A

.

【解析】本题考查对向量组线性相关、线性无关概念的理解.若向量组

1

,

2

,

无关,即若

x

1

1

x

2

2

既然

1

,

,

s

线性

x

s

s

0

,必有

x

1

0,x

2

0,,x

s

0

.

,

m

k

1

,

(C).

,k

m

不全为零,由此推不出某向量组线性无关,故应排除(B)、

一般情况下,对于

k

1

1

k

2

2

k

s

s

l

1

1

l

s

s

0,

不能保证必有

k

1

1

k

2

2

k

s

s

0,

l

1

1

l

s

s

0,

故(A)不正确.由已知条件,

1

1

1

1

,

m

m

m

k

1

1

1

k

m

m

m

0

,

,

m

m

线性相关.

,

m

k

1

,,k

m

不全为零,故

1

1

,,

m

m

,

1

1

,

故选(D).

(5)【答案】(B)

【解析】依题意

P

A

1

A

2

B

P(B)

P

A

1

B

P

A

2

B

P

A

1

BA

2

B

P

A

1

B)P(A

2

B

,.

P(B)P(B)P(B)P(B)

P(B)0

,故有

P

AB

1

A

2

B

P

AB

1

)P(A

2

B

.因此应选(B).

注:有些考生错误地选择(D).他们认为(D)是全概率公式,对任何事件

B

都成立,但是忽略了

全概率公式中要求作为条件的事件

A

1

,A

2

应满足

P(A

1

,A

2

是对立事

1

)0,P(A

2

)0

,且

A

件.

【相关知识点】条件概率公式:

P(B|A)

三、(本题满分6分)

【解析】(1) 由于

g(x)

有二阶连续导数,故当

x0

时,

f(x)

也具有二阶连续导数,此

时,

f

(x)

可直接计算,且

f

(x)

连续;当

x0

时,需用导数的定义求

f

(0)

.

P(AB)

.

P(A)

x[g

(x)e

x

]g(x)e

x

xg

(x)g(x)(x1)e

x

.

x0

时,

f

(x)

x

2

x

2

x0

时,由导数定义及洛必达法则,有

g(x)e

x

g

(x)e

x

g



(x)e

x

g



(0)1

f

(0)lim

lim

lim

.

2

x0x0x0

x2x22

xg

(x)g(x)(x1)e

x

,x0,

2

x

所以

f

(x)



g(0)1

,x0.

2

(2)

f

(x)

x0

点的连续性要用定义来判定.因为在

x0

处,有

xg

(x)g(x)(x1)e

x

limf

(x)lim

x0x0

x

2

2024年5月8日发(作者:诸如柏)

1996年全国硕士研究生入学统一考试数学三试题

一、填空题(本题共5小题,每小题3分,满分15分.把答案填在题中横线上.)

(1) 设方程

xy

y

确定

y

x

的函数,则

dy

___________.

(2) 设

xf(x)dxarcsinxC

,则

1

dx

___________..

f(x)

(3) 设

x

0

,y

0

是抛物线

yax

2

bxc

上的一点,若在该点的切线过原点,则系数应满足

的关系是___________.

(4) 设

11

1

aa

2

a

3

1

22

A

a

1

2

a

2

a

3

n1n1n1

a

2

a

3

a

1

其中

a

i

a

j

(ij;i,j1,2,

1



x

1

1

x

1

a

n



2



2

a

n

,

X

x

3

,

B

1

,









n1

a

n

1

x

n

,n)

.则线性方程组

A

T

XB

的解是___________.

(5) 设由来自正态总体

X~N(

,0.9

2

)

容量为9的简单随机样本,得样本均值

X5

,则未

知参数

的置信度为0.95的置信区间为___________.

二、选择题(本题共5小题,每小题3分,满分15分.每小题给出的四个选项中,只有一项符

合题目要求,把所选项前的字母填在题后的括号内.)

(1) 累次积分

(A)

(C)

1

2

0

d

yy

2

cos

0

f(rcos

,rsin

)rdr

可以写成 ( )

11y

2

00

xx

2

dy

00

1

f(x,y)dx

(B)

dy

1

0

f(x,y)dx

dx

0

1

0

f(x,y)dy

(D)

dx



0

f(x,y)dy

(2) 下述各选项正确的是 ( )

(A) 若

u

n1

2

n

v

n1

2

n

都收敛,则

(u

n1

2

n

n

v

n

)

2

收敛

(B)

uv

n1

nn

收敛,则

u

n1

2

n

v

n1

都收敛

(C) 若正项级数

u

n1

n

发散,则

u

n

1

n

(D) 若级数

u

n1

n

收敛,且

u

n

v

n

(n1,2,

)

,则级数

v

n

也收敛

n1

(3) 设

n

阶矩阵

A

非奇异(

n2

),

A

是矩阵

A

的伴随矩阵,则 ( )



(A)

(A)A

n1

A

(B)

(A

)

A

A

(D)

(A

)

A

n1

A

A



(C)

(A)A

n2n2

(4) 设有任意两个

n

维向量组

1

,

k

1

,

,

m

1

,,

m

,若存在两组不全为零的数

1

,,

m

,k

m

,使

(

1

k

1

)

1

(

m

k

m

)

m

(

1

k

1

)

1

(

m

k

m

)

m

0

,则

( )

(A)

1

,

(B)

1

,

,

m

1

,

,

m

1

,

,

m

都线性相关

,

m

都线性无关

,

m

m

线性无关

,

m

m

线性相关

(C)

1

1

,

(D)

1

1

,

,

m

m

,

1

1

,

,

m

m

,

1

1

,

(5) 已知

0P(B)1

P[

A

1

A

2

B]P(A

1

B)P(A

2

B)

,则下列选项成立的是( )

(A)

P[

A

1

A

2

B]P(A

1

B)P(A

2

B)

(B)

P

A

1

BA

2

B

P(A

1

B)P(A

2

B)

(C)

P

A

1

A

2

P(A

1

B)P(A

2

B)

(D)

P

B

P

A

1

P(BA

1

)P(A

2

)P(BA

2

)

三、(本题满分6分)

g(x)e

x

,x0,

f(x)

其中

g(x)

有二阶连续导数,且

g(0)1,g

(0)1

.

x

0,x0,

(1)求

f

(x)

(2)讨论

f

(x)

(,)

上的连续性.

四、(本题满分6分)

设函数

zf(u)

,方程

u

(u)

x

y

p(t)dt

确定

u

x,y

的函数,其中

f(u),

(u)

zz

p(x)

.

xy

微;

p(t)

,

(u)

连续,且

(u)1

.求

p(y)

五、(本题满分6分)

计算



0

xe

x

dx

.

(1e

x

)

2

六、(本题满分5分)

f(x)

在区间

[0,1]

上可微,且满足条件

f(1)2

1

2

0

xf(x)dx

.试证:存在

(0,1)

使

f(

)

f

(

)0.

七、(本题满分6分)

设某种商品的单价为

p

时,售出的商品数量

Q

可以表示成

Q

a

c

,其中

a、b、

pb

c

均为正数,且

abc

.

(1) 求

p

在何范围变化时,使相应销售额增加或减少.

(2) 要使销售额最大,商品单价

p

应取何值?最大销售额是多少?

八、(本题满分6分)

dy

yx

2

y

2

求微分方程的通解.

dxx

九、(本题满分8分)

0

1

设矩阵

A

0

0

100

000

.

0y1

012

(1) 已知

A

的一个特征值为3,试求

y

(2) 求矩阵

P

,使

(AP)(AP)

为对角矩阵.

十、(本题满分8分)

设向量

1

,

2

,

T

,

t

是齐次线性方程组

AX0

的一个基础解系,向量

不是方程组

AX0

的解,即

A

0

.试证明:向量组

,

1

,

2

,,

t

线性无关.

十一、(本题满分7分)

假设一部机器在一天内发生故障的概率为0.2,机器发生故障时全天停止工作,若一周5

个工作日里无故障,可获利润10万元;发生一次故障仍可获得利润5万元;发生两次故障所

获利润0元;发生三次或三次以上故障就要亏损2万元.求一周内期望利润是多少?

十二、(本题满分6分)

考虑一元二次方程

xBxC0

,其中

B、C

分别是将一枚色子(骰子)接连掷两次

先后出现的点数.求该方程有实根的概率

p

和有重根的概率

q

.

十三、(本题满分6分)

假设

X

1

,X

2

,

2

,X

n

是来自总体X的简单随机样本;已知

EX

k

a

k

(k1,2,3,4)

.

1

n

2

证明:当

n

充分大时,随机变量

Z

n

X

i

近似服从正态分布,并指出其分布参数.

n

i1

1996年全国硕士研究生入学统一考试数学三试题解析

一、填空题(本题共5小题,每小题3分,满分15分,把答案填在题中横线上.)

(1)【答案】

dx

x

1lny

【解析】方法1:方程

xy

y

两边取对数得

lnxlny

y

ylny

,再两边求微分,

11

dx

lny1

dydydx

x

lny1

0

.

xx

lny1

方法2:把

xy

y

变形得

xe

ylny

,然后两边求微分得

dxe

ylny

d

ylny

y

y

1lny

dyx

1lny

dy

,

由此可得

dy

1

dx.

x

1lny

2

3

(2)【答案】

1

3

1x

C

【解析】由

xf(x)dxarcsinxC

,两边求导数有

xf(x)

arcsinx

1

1x

2

1

x1x

2

,

f(x)

于是有

1

1

dx

x1x

2

dx

1x

2

dx

2

2

f(x)



1

22

1xd1x



2

1

2

3

1x



C

.

3

(3)【答案】

c

2

0

(或

ax

0

c

),

b

任意

a

2

【解析】对

yaxbxc

两边求导得

y

2axb,y

x

0

2ax

0

b,

所以过

x

0

,y

0

的切线方程为

yy

0

2ax

0

b



xx

0

,

2

y

ax

0

bx

0

c

2ax

0

b



xx

0

.

又题设知切线过原点

0,0

,把

xy0

代入上式,得

2

22

c.

ax

0

bx

0

c2ax

0

bx

0

,

ax

0

由于系数

a0

,所以,系数应满足的关系为

(4)【答案】

1,0,0,

c

2

0

(或

ax

0

c

),

b

任意.

a

0

T

【解析】因为

A

是范德蒙行列式,由

a

i

a

j

A

秩的关系,所以方程组

AXB

有唯一解.

根据克莱姆法则,对于

T

aa

0

.根据解与系数矩阵

ij

1

1

1

1

易见

D

1

A,D

2

D

3

T

a

1

a

2

a

3

a

n

a

1

2

2

a

2

2

a

3

2

a

n

a

1

n1

x

1

1

1

n1

x

a

2

2





n1

a

3

x

3

1

,









n1



1

a

n

x

n

D

n

0.

x

n

0

,即

1,0,0,

a

1n

x

n

b

1

,

a

2n

x

n

b

2

,

a

nn

x

n

b

n

.

所以

AXB

的解为

x

1

1,x

2

x

3

,0

.

T

【相关知识点】克莱姆法则:若线性非齐次方程组

a

11

x

1

a

12

x

2

axax

211222

a

n1

x

1

a

n2

x

2

或简记为

其系数行列式

ax

ij

j1

n

j

b

i

,i1,2,,n

a

11

D

a

21

a

n1

则方程组有唯一解

a

12

a

22

a

n2

a

1n

a

2n

a

nn

0

,

x

j

其中

D

j

是用常数项

b

1

,b

2

,

D

j

D

,j1,2,,n.

,b

n

替换

D

中第

j

列所成的行列式,即

a

11

D

j

a

21

a

n1

(5)【答案】

(4.412,5.588)

【解析】可以用两种方法求解:

a

1,j1

b

1

a

1,j1

a

2,j1

a

n,j1

a

1n

a

2n

a

nn

.

a

2,j1

b

2

a

n,j1

b

n

(1)已知方差

0.9

,对正态总体的数学期望

进行估计,可根据

X

22

1

n

N(

,0.9)

,设有

n

个样本,样本均值

X

X

i

,

n

i1

2

X

0.9

2

XE(X)

N(

,)

,将其标准化,由公式

~N(0,1)

得:

n

D(X)

n

X

~N(0,1)

1

n



X



u

1

可确定临界值

u

, 由正态分布分为点的定义

P

2



1

n

2



进而确定相应的置信区间

(xu

2

n

,xu

2

n

)

.

(2)本题是在单个正态总体方差已知条件下,求期望值

的置信区间问题.

由教材上已经求出的置信区间

xu

2

n

,xu

2

,

n

其中

P

Uu

1

,U

N(0,1)

,可以直接得出答案.

2

方法1:由题设,

1

0.95

,可见

0.05.

查标准正态分布表知分位点

u

1.96.

2

n9

,

X5

, 因此,根据

P{

X

1.96}0.95

,有

1

n

P{

5

1.96}0.95

,即

P{4.412

5.588}0.95

,

1

9

的置信度为0.95的置信区间是

(4.412,5.588)

.

方法2:由题设,

1

0.95

,

P{Uu

}P{u

Uu

}2(u

)10.95,(u

)0.975

22222

查得

u

1.96.

2

0.9

2

,

n9

,

X5

代入

(xu

2

n

,xu

2

n

)

得置信区间

(4.412,5.588)

.

二、选择题(本题共5小题,每小题3分,满分15分.每小题给出的四个选项中,只有一项符

合题目要求,把所选项前的字母填在题后的括号内.)

(1)【答案】(D)

【解析】方法1:由题设知,积分区域在极坐标系

xrcos

,yrsin

中是



D

r,

|0

,0rcos

,

2



1

1

即是由

x

y

2

x

轴在第一象限所围成的

2

4

平面图形,如右图.

由于

D

的最左边点的横坐标是

0

,最右点的横坐标是1,

下边界方程是

y0,

上边界的方程是

y

的直角坐标表示是

2

y

1

2

xx

,从而

D

2

O

1

2

1

x

D

x,y

|0x1,0yxx

2

,

故(D)正确.

方法2:采取逐步淘汰法.由于(A)中二重积分的积分区域的极坐标表示为



D

1

r,

|0

,0rsin

,

2



而(B)中的积分区域是单位圆在第一象限的部分,

(C)中的积分区域是正方形

x,y

|0x1,0y1

,

所以,他们都是不正确的.故应选(D).

(2)【答案】(A)

【解析】由于级数

u

n1

2

n

v

n1

2

n

都收敛,可见级数

u

n1

2

n

2

v

n

收敛.由不等式

22

2u

n

v

n

u

n

v

n

及比较判别法知级数

2uv

n1

2

2

n

nn

收敛,从而

2uv

n1

nn

收敛.

又因为

u

n

v

n

uv2u

n

v

n

,

即级数

2

n

u

n

v

n

n1

2

收敛,故应选(A).

1

,v

n

1

n1,2,

,可知(B)不正确.

n

2

11

u

n



2

n1,2,

,可知(C)不正确.

nn

u

n

u

n

1

n

n1

,v

n



1

n1,2,

n

,可知(D)不正确.

)

,则级数

v

n

也收敛.”

n1

注:在本题中命题(D)“若级数

u

n1

n

收敛,且

u

n

v

n

(n1,2,

不正确,这表明:比较判别法适用于正项级数收敛(或级数绝对收敛)的判别,但对任意项级数

一般是不适用的.这是任意项级数与正项级数收敛性判别中的一个根本区别.

(3)【答案】(C)

【解析】伴随矩阵的基本关系式为

AAAAAE

,



现将

A

视为关系式中的矩阵

A

,则有

A(A)AE

.



方法一:由

AA

n1

(A)

1

A

,可得

A

n1

(A

)

A

(A

)

1

A

故应选(C).



方法二:由

A(A)AE

,左乘

A

n1

A

n2

AA.

A

(AA

)(A

)

A

故应选(C).

(4)【答案】(D)

A

,即

(AE)(A

)

A

n1

A

.

【解析】本题考查对向量组线性相关、线性无关概念的理解.若向量组

1

,

2

,

无关,即若

x

1

1

x

2

2

既然

1

,

,

s

线性

x

s

s

0

,必有

x

1

0,x

2

0,,x

s

0

.

,

m

k

1

,

(C).

,k

m

不全为零,由此推不出某向量组线性无关,故应排除(B)、

一般情况下,对于

k

1

1

k

2

2

k

s

s

l

1

1

l

s

s

0,

不能保证必有

k

1

1

k

2

2

k

s

s

0,

l

1

1

l

s

s

0,

故(A)不正确.由已知条件,

1

1

1

1

,

m

m

m

k

1

1

1

k

m

m

m

0

,

,

m

m

线性相关.

,

m

k

1

,,k

m

不全为零,故

1

1

,,

m

m

,

1

1

,

故选(D).

(5)【答案】(B)

【解析】依题意

P

A

1

A

2

B

P(B)

P

A

1

B

P

A

2

B

P

A

1

BA

2

B

P

A

1

B)P(A

2

B

,.

P(B)P(B)P(B)P(B)

P(B)0

,故有

P

AB

1

A

2

B

P

AB

1

)P(A

2

B

.因此应选(B).

注:有些考生错误地选择(D).他们认为(D)是全概率公式,对任何事件

B

都成立,但是忽略了

全概率公式中要求作为条件的事件

A

1

,A

2

应满足

P(A

1

,A

2

是对立事

1

)0,P(A

2

)0

,且

A

件.

【相关知识点】条件概率公式:

P(B|A)

三、(本题满分6分)

【解析】(1) 由于

g(x)

有二阶连续导数,故当

x0

时,

f(x)

也具有二阶连续导数,此

时,

f

(x)

可直接计算,且

f

(x)

连续;当

x0

时,需用导数的定义求

f

(0)

.

P(AB)

.

P(A)

x[g

(x)e

x

]g(x)e

x

xg

(x)g(x)(x1)e

x

.

x0

时,

f

(x)

x

2

x

2

x0

时,由导数定义及洛必达法则,有

g(x)e

x

g

(x)e

x

g



(x)e

x

g



(0)1

f

(0)lim

lim

lim

.

2

x0x0x0

x2x22

xg

(x)g(x)(x1)e

x

,x0,

2

x

所以

f

(x)



g(0)1

,x0.

2

(2)

f

(x)

x0

点的连续性要用定义来判定.因为在

x0

处,有

xg

(x)g(x)(x1)e

x

limf

(x)lim

x0x0

x

2

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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1718201108)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1718201108)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1718247464)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1718247464)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1718282990)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1718282990)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1720469125)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1720469125)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1724347331)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1724347331)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1724350064)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1724350064)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1724657962)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1724657962)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1724878646)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1724878646)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1725082522)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1725082522)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1725596398)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1725596398)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1726479838)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1726479838)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729256080)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729256080)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729258053)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729258053)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1730414487)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1730414487)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1738298150)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1738298150)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
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