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6、----   

----I had a great time, too.I’ll call you this week and perhaps we can go out again next weekend.

A、Thank you for a lovely evening      B、Did you have a good time?

C、A lovely evening,isn’t it?        D、How did you spend this weekend?

試題詳情

5、----You speak very good English.

----   .

A、And so do you   B、Far from very good   

C、Worse than you do    D、Thanks for your praise

試題詳情

4、----The book isn’t easy for Jack to understand,is it?

----    .His foreign language is far better than expected.

A、No,it isn’t    B、I’m afraid not    C、I don’t think so    D、Yes,it is

試題詳情

3、----May I take your order now?

----   

----OK,I’ll come back in a few minutes.

A、Could you bring us the bill?    B、Sure,we’d love to

C、Yes,here it is.Thank you.      D、No,we need more time

試題詳情

2、----Hi,Jack!I’m glad I came across you here.

----    ,Alice?

A、Who is that speaking     B、How about another cup of tea

C、Why?What’s up       D、What can I do for you

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1、----Would you mind my opening the door?

----Oh,    .

A、you’re welcome    B、I think so    C、that’s all right    D、not at all

試題詳情

(15) 已知函數的圖象過點P(0,2),且在點M處的切線方程為.

 (Ⅰ)求函數的解析式;

(Ⅱ)求函數的單調區(qū)間.

(16) 已知函數處取得極值.

(Ⅰ)討論是函數的極大值還是極小值;

(Ⅱ)過點作曲線的切線,求此切線方程.

(17) 已知向量在區(qū)間(-1,1)上是增函數,求t的取值范圍.

(18) 已知是函數的一個極值點,其中,

(I)求的關系式;

(II)求的單調區(qū)間;

(III)(理科做)當時,函數的圖象上任意一點的切線斜率恒大于3,求的取值范圍.

試題詳情

(11)設f(x)= x|x|, 則f′(  0)=     .

(12)函數在閉區(qū)間[-3,0]上的最大值、最小值分別是      .

(13)若曲線y=h(x)在點P(a, h(a))處的切線方程為2x+y+1=0,則與0的大小關系是     0

(14)過原點作曲線的切線,則切點的坐標為      ,切線的斜率為     .

試題詳情

(1) 下列求導運算正確的是                      (    )

A.(x+         B.(log2x)′= 

C.(3x)′=3xlog3e          D. (x2cosx)′=-2xsinx  

(2) 函數yx2+1的圖象與直線yx相切,則=           (    )

A.       B.      C.       D.1

(3) 函數是減函數的區(qū)間為             (    )

A.  B.    C.       D.(0,2)

(4) 函數已知時取得極值,則= (    )

A.2        B.3      C.4       D.5

(5) 在函數的圖象上,其切線的傾斜角小于的點中,坐標為整數的點的個數是      (    )

   A.3       B.2        C.1        D.0

(6) 設f0(x) = sinx,f1(x)=f0′(x),f2(x)=f1′(x),…,fn+1(x) = fn′(x),n∈N,則f2005(x)=   (    )

A.sinx       B.-sinx     C.cosx      D.-cosx

(7) 已知函數的圖象如右圖所示(其中 是函數的導函數),下面四個圖象中的圖象大致是 (    )

(8)設在[0, 1]上的函數f(x)的曲線連續(xù), 且f′(x)>0, 則下列一定成立的是 (    )

A. f(0)<0    B. f(1)>0     C. f(1)> f(0)     D. f(1)<f(0) 

(9)設f(x)、g(x)分別是定義在R上的奇函數和偶函數,當x<0時,>0.且g(3)=0.則不等式f(x)g(x)<0的解集是  (    )

A.  (-3,0)∪(3,+∞)        B.  (-3,0)∪(0, 3)

   C.  (-∞,- 3)∪(3,+∞)       D.  (-∞,- 3)∪(0, 3)

(10)若的大小關系                (    )

   A.   B.   C.    D.與x的取值有關

試題詳情


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