求函数
的极值和单调区间.
(18)(本小题满分10分)
设函数
是定义在
上的奇函数,当
时,![]()
![]()
(Ⅰ)当
;
(Ⅱ)若
在
上为增函数,求
的取值范围.
(19)(本小题满分10分)
设函数
,点P(x0,y0)
0<x0<1
在曲线
上,求曲线在点P处的切线与x轴和y轴的正向所围成的三角形面积表达式(用x0表达).
(20)(本小题满分12分)
某厂生产某种电子元件,如果生产出一件正品,可获利200元,如果生产出一件次品则损失100元.已知该厂制造电子元件过程中,次品率p与日产量x的函数关系是:
.
(I)将该厂的日盈利额T(元)表示为日产量x(件)的函数;
(II)为获得最大盈利,该厂的日产量应为多少件?
(14)函数y=x-2sinx在(0, 2
)内的单调增区间为
.
(15)曲线y=
上的点到直线2x-y+3=0的最短距离为
.
(16)向高为8m,底面边长为8m的倒置正四棱锥形的容器内注水,其速度为每分钟
,则 当水深为5m时,水面上升的速度为
.
(1)已知
的值是
(A)
(B)2
(C)
(D)-2
(2)![]()
(A)0
(B)
(C)
(D)![]()
(3)已知曲线
,则过点(1,2)的切线的斜率是
(A)2 (B)4 (C)6 (D)8
(4)函数
的导数是
(A)
(B)
(C)
(D)![]()
(5)若函数
为R上的连续函数,则a 的值为
(A)2 (B)1 (C)0 (D)-1
(6)下列给出的四个命题中,正确的命题是
①若函数![]()
②若函数![]()
③瞬时速度是动点位移函数S(t)对时间t的导数
④曲线
在点(0,0)处没有切线
(A)①② (B)②③ (C)①②③ (D)②③④
(7)函数
的导数是
(A)
(B)![]()
(C)
(D)![]()
(8)
为增函数的区间是
(A)
(B)![]()
(C)
(D)![]()
(9)函数
的最大值为
(A)
(B)e
(C)
(D)10
(10)半径为r的圆形铁板,受热膨胀,半径r为时间t的函数,其导数(半径膨胀率)为
那么其面积的膨胀率![]()
(A)
(B)
(C)
(D)![]()
(11)若f(x)是在(-L,L)内的可导的偶函数,且
不恒为0,则![]()
(A)必定是(-L,L)内的偶函数
(B)必定是(-L,L)内的奇函数
(C)必定是(-L,L)内的非奇非偶函数
(D)可能是(-L,L)内的奇函数,可能是偶函
(12)已知
的值是
(A)
(B)0
(C)8
(D)不存在
第三节 书面表达(满分25分)
不同的学生对自己心目中好老师的标准有所不同,但也有共同之处。请你根据下列表格中的内容以Good Teachers in Our Heart为题,写一篇120词左右的英语短文。
|
约40%的同学认为 |
约60%的同学认为 |
一致认为 |
|
对同学友好;上课认真 |
知识渊博;讲课清晰易懂 |
严格要求学生,又善于帮助学生解决问题;风趣幽默,上课生动有趣。 |
Good Teachers in Our Heart
Good teachers are those who are popular with students.But what kind of teachers are popular with students? Different students have different opinions about this question.
![]()
第二节 短文改错(共10小题;每小题1分,满分10分)
At present, playing computer games are becoming more and 81.___________
more po
pular
with people, especially with students.Take
Tom 82.___________
and Mike for example.Every day after the school, they go to the 83.___________
computer bar to play games till lately at night, and they often have 84.___________
a competition to see who wins many scores.Once, Tom didn’t go 85.___________
home until eleven o’clock in night.When he got home, he told his 86.___________
mother he had been gone over his lessons.Poor mom! She believed 87.___________
him and cooked two eggs for him.“Take more care of yourselves as 88.___________
you work too hardly, my dear son.” She said.Tom’s face turned red 89.___________
at his mother’s praise.Later he made his mind to work really hard. 90.___________
第一节 单词拼写 根据句意及首字母或汉语意思提示完成句子。(答案写在答题卷的横线上)
71.She did all she could to ________ (获得) a good knowledge of English.
72.They could give ________ (证据) at the court yesterday.
73.The club c_________ of about 100 members.
74.He became ________(受鼓舞的) when he thought about helping the poor people.
75.Hello.This is Helen, I’d like to make an a_________ with Doctor White.
76.He is a selfish person.He only thinks of his own c_________.
77.I can’t c_________ on my studies with all that noise going on.
78.He suffered many i_________ in the accident.
79.Many people b___________ to death for our happy life today.
80.I am sorry I hurt you, but that was not my i ___________.
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