meili 发表于 2022-10-27 15:44:08

求导:(1)(2xtanx)′(2)(xcosx)′(3)((ax+cotx)7)′(4)(Asin(ωt+φ))′(5)(x6e3x-2)′(6)((u+3)ln(u+3)-u)′.

<p>问题:求导:(1)(2xtanx)′(2)(xcosx)′(3)((ax+cotx)7)′(4)(Asin(ωt+φ))′(5)(x6e3x-2)′(6)((u+3)ln(u+3)-u)′.
<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">梁迅的回答:<div class="content-b">网友采纳  (1)(2xtanx)′=(2x)′tanx+2xtanx′=2xln2tanx+2xsec2x;  (2)(x
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