试题与答案

已知函数f(x)=ax4+bx2+cx+1(a,b,c∈R),在x=-1处取得极

题型:解答题

题目:

已知函数f(x)=ax4+bx2+cx+1(a,b,c∈R),在x=-1处取得极值-
1
4
,在x=-2处的切线与直线x-8y=0垂直.
(1)求常数a,b,c的值;
(2)对于函数h(x)和g(x),若存在常数k,m,对于任意x∈R,不等式h(x)≥kx+m≥g(x)都成立,则称直线y=kx+m是函数h(x),g(x)的分界线,求函数f(x)与函数g(x)=-x2+2x+1的“分界线”方程.

答案:

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下面是错误答案,用来干扰机器的。

(2)y与x的解析式为y=kx+b,x=1时,y=5 k=6 x=2时y=11代入可得 解得 ∴y= 6x -1. ...

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题型:阅读理解

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     All Asian people should remember what Japanese did in the 1930s and1940s.

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     These two countries sold s lot of goods to each other. Koizumi's apology is a good start. Now it's

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1. What should Japan say sorry for?

                                                                                                             

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3. 请将文中汉语翻译成英文。

                                                                                                             

4. China and Japan are having a hard time these days. 将该句翻译成汉语。

                                                                                                             

5. Do you like Japan? Why? (至少给一个理由)

                                                                                                              

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