求y=2xsin(2x+50的导数觉得答案有不对呵呵.

乐莜柚2022-10-04 11:39:541条回答

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今日百晓生共回答了16个问题 | 采纳率68.8%: y=2xsin(2x+5)
y'=2x'*sin(2x+5)+2x*[sin(2x+5)]'
=2sin(2x+5)+2xcos(2x+5)*(2x+5)'
=2sin(2x+5)+2xcos(2x+5)*2
=2sin(2x+5)+4xcos(2x+5); 1年前

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