函数y=xsin2x的导数是 [ ] A.y′=sin2x-xcos2x B.y 发布时间:2017-05-13 00:45 │ 来源:www.tikuol.com 题型:选择题 问题: 函数y=xsin2x的导数是 [ ]A.y′=sin2x-xcos2x B.y′=sin2x-2xcos2x C.y′=sin2x+xcos2x D.y′=sin2x+2xcos2x
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