求下列函数的导数f(x)=(x2+9)*(x-3/x)
<p>问题：求下列函数的导数f(x)=(x2+9)*(x-3/x)<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">彭宇行的回答：<div class="content-b">网友采纳 f(x)=(x2+9)*(x-3/x) f'(x)=(x2+9)'*(x-3/x)+(x2+9)*(x-3/x)' =2x(x-3/x)+(x2+9)*(1+3/x^2)
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