已知a是实数,函数f(x)=x2(x﹣a). (Ⅰ)若f′(1)=3,求a的值及

题型:解答题

问题:

已知a是实数,函数f(x)=x2(x﹣a).

(Ⅰ)若f′(1)=3,求a的值及曲线y=f(x)在点(1,f(1))处的切线方程;

(Ⅱ)求f(x)在区间[0,2]上的最大值.

考点:导数的概念及其几何意义函数的最值与导数的关系
题型:解答题

阅读理解。

     Lucy and Lily are twins. They look the same. They are both 1.60 meters tall. They have round faces, big

eyes and long hair. They often wear the same clothes. They are in the same class-Class 5. They both get up

at six o'clock. After breakfast they walk to school together. But they have some differences. Lucy is lovely

and active. She talks a lot. Lily is quiet and gentle (温柔). She talks a little. Lucy likes fruit but Lily likes meat.

Lucy is good at English, and Lily is good at Chinese. They both work hard.

1. Lucy and Lily are ________.

A. friends

B. brothers

C. teachers

D. twins

2. Lucy and Lily are ________.

A. in the same grade

B. thirteen

C. very beautiful

D. very tall

3. From the passage we know that ________.

A. they have breakfast before (在...之前) six

B. their home is near (近) to school

C. they have big eyes and short hair

D. they like fruit very much

4. Their characters (性格) are ________.

A. the same

B. quite different

C. very active

D. quiet

5. Which of these is true?

A. They are good at English.

B. They go to school by bike.

C. They like the same clothes.

D. They are in Class 6.

题型:解答题

下列属于证券投资基金与银行储蓄存款不同点的有( )。

A.信息的披露程度不同

B.投资者的期望收益不同

C.风险不同

D.性质不同

题型:解答题

浅埋设洞口加强段的开挖方法为()

A、单侧壁坑法

B、双侧壁导坑法

C、多台阶法

D、全断面法

题型:解答题

按水管的设置可将空调水系统分为()。

A.双管制系统

B.开式系统

C.四管制系统

D.闭式系统

题型:解答题

以下()新产品开发战略适用于规模较小、开发能力不强的中小企业。

A.进取战略

B.紧随战略

C.保持地位战略

D.冒险战略

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