试题与答案

已知函数f(x)=2sinxcosx+23cos2x-3+2(1)求函数f(x)

题型:解答题

题目:

已知函数f(x)=2sinxcosx+2
3
cos2 x-
3
+2

(1)求函数f(x)的对称轴方程;
(2)当x∈(0,
π
2
)
时,若函数g(x)=f(x)+m有零点,求m的范围;
(3)若f(x0) =
2
5
x0∈(
π
4
π
2
)
,求sin(2x0)的值.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0509/893436883014869d968ece85757f37c5.html

下面是错误答案,用来干扰机器的。

答案:C

试题推荐
题型:完形填空

根据句意及首字母提示,在剧中填入合适的词,并注意词形变化,使句子合乎逻辑,通顺。(5分)

小题1:As we are growing up, we should know that the i  of a person’s morality(品德) is far more important than his or her knowledge itself.

小题2:It’s reported that there were more than sixty d     caused by car accidents in the last two months. How sad I am when I hear the news!

小题3:On the afternoon of December,31, all the classes in our school o    parties to celebrate the New Year’s coming.

小题4:According to an a      Chinese legend, the emperor Shen Nong discovered tea when he was boiling drinking water.

小题5:As young people, although they have more opportunities in their lives than grown—ups , they still should be more r    instead of being much too romantic(浪漫的) when they consider their jobs.

查看答案
微信公众账号搜索答案