y=sin^2xcos2x (y等于sin的平方x cos2x )的导数_数学解答

y=sin^2xcos2x (y等于sin的平方x cos2x )的导数

人气：464 ℃　时间：2020-04-05 09:49:50

解答

y'=2sinx*cosxcos2x+sin^2x*(-sin2x)*(-2x)'
=sin2xcos2x+2sin^2xsin2x
=1/2sin4x+2sin^2xsin2x