函数y＝sinxcosx的导数为（）A．cos2x−sin2xcos2xB．−cos2x+sin2xcos2xC．cos2x+sin2xcos2xD．−cos2x−sin2xcos2x
<p>问题：函数y＝sinxcosx的导数为（）A．cos2x−sin2xcos2xB．−cos2x+sin2xcos2xC．cos2x+sin2xcos2xD．−cos2x−sin2xcos2x<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">曹志耀的回答：<div class="content-b">网友采纳 ∵y′=(sinxcosx)
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