函数y＝12(ex+e−x)的导数是（）A.12(ex−e−x)B.12(ex+e−x)C.ex-e-xD.ex+e-x
<p>问题：函数y＝12(ex+e−x)的导数是（）A.12(ex−e−x)B.12(ex+e−x)C.ex-e-xD.ex+e-x<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">顾颀的回答：<div class="content-b">网友采纳 ∵y＝12(e
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