试点高校网络教育部分公共基础课全国统一考试
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试点高校网络教育部分公共基础课全国统一考试
高等数学(B )试卷
2008年4月
注意:是非题、选择题、填空题及解答题的解答均必须写在答题纸上,写在试
卷上的任何解答一律无效.
一、是非题(满分18分)本大题共6个小题,每小题3分.对每小题给出的命
题,认为正确的在答题纸相应的空格内填“对”,否则填“错”.
1.函数22
11x
x y +-=的定义域为}0|{≠x x .( ) 2.极限5
15sin lim 0=→x x x .( ) 3.函数)(x f 在点0x x =处可导,则该函数在点0x x =处必连续.( )
4.函数)(x f 在其定义域上的极小值可能大于它的一个极大值.( )
5.设)(x f 为连续函数,则⎰+=C x f x x f )()'d )((.( )
6.设)(x f 为]2,2[-上连续奇函数,则0d )(22=⎰
-x x f .( )
二、选择题(满分20分)本大题共5个小题,每小题4分. 在每小题给出的四个选项中,只有一项符合题目要求,把所选项前的字母写在答题纸相应的空格内.
7.极限=+→)(lim 21x x x ( ). A .1-
B .0
C .1
D .2
8.函数x x f cos 3)(+=在),(∞+-∞内是( ).
A .偶函数
B .奇函数
C .无界函数
D .单调函数
9.设函数x y ln 5+=,则d y =( ).
A .x x d e B. x x d 1 C. x x )d e 1(+ D. x x d 11⎪⎭⎫ ⎝
⎛+ 10.不定积分⎰=x x de e ( ).
A .C x +2e
B .
C x +e C .C x +22e
D .C x +2e 2
1 11.设函数)(x f 在),(b a 内可导,且0)(<'x f ,则)(x f 在),(b a 内( ).
A . 单调增加
B . 单调减少
C . 是常数
D . 依条件不能确定单调性
三、填空题(满分20分)本大题共5个小题,每小题4分. 把答案写在答题纸
相应的空格内.
12.极限=⎪⎭
⎫ ⎝⎛+∞→x x x 21lim ( ). 13.设函数)(x f 在2=x 处可导,且1)2(='f ,则=∆-∆+→∆x
f x f x )2()2(lim 0( ). 14.设x 为)(x f 的一个原函数,则函数)(x f =( ).
15.设⎩⎨⎧=≠=1
,1,e )(x a x x f x ,若函数)(x f 在1=x 处连续,则常数=a ( ).
16.微分方程
y x
y =d d 的通解是( ).
四、解答题(满分42分)本大题共6个小题,每小题满分7分. 解答应写出推
理、演算步骤,将解答写在答题纸相应的位置上. 17.求极限2
31)1(23lim -+-→x x x x .
18.设函数x y sin 2-=,求x y d d 及 0
d d =x x y .
19.设函数x x y ln =,求(1)定义域;(2)''y ;(3)函数图形的凹区间.
20.计算不定积分x x d 1
31⎰-. 21.求由曲线x y e =及直线1=y 和1=x 所围成的平面图形的面积(如下图).
22.求微分方程
x x
y x y =+d d 的通解.
试点高校网络教育部分公共基础课全国统一考试
高等数学(B )试卷参考解答与评分标准
2008年4月
一、是非题(满分18分,每小题3分)
1. 错
2. 错
3. 对
4. 对
5. 错
6. 对
二、选择题(满分20分,每小题4分)
7. D 8. A 9. B 10. D 11. B
三、填空题(满分20分,每小题4分)
12.2e 13.1 14.1 15.e 16.x C y e =
四、解答题(满分42分,每小题满分7分)
17.解法一:
)1(233lim )1(23lim 212
31--=-+-→→x x x x x x x ··············································· 3分 26lim
1x x →= ····················································· 6分 3= ···························································· 7分
解法二: )1(233lim )1(23lim 212
31--=-+-→→x x x x x x x ················································ 3分 2
)1(3l i m )1(2)1)(1(3lim 11+=--+=→→x x x x x x ························ 6分 3= ····························································· 7分
18.解:
x x
y cos d d -= ······································································· 5分 1d d 0
-==x x y
·
······································································· 7分 19.解:
(1)),0(∞+,(写为0>x 也正确) ·········································· 2分
(2)1ln '+=x y ······································································ 4分
x
y 1"=············································································ 5分 (3)函数图形的凹区间为),0(∞+ ············································· 7分
20.解法一:
⎰⎰--=-13)13(d 3113d x x x x ·
·························································· 3分 C x +-=|13|ln 3
1 ······················································ 7分 解法二:
设13-=x u ···································································· 1分