y=根号下(cosx²)求导

问题描述:

y=根号下(cosx²)求导
-xtan(x²)根号下(cosx²)

y = [根号下(cosx²)]'=[(cosx²)^(1/2)]'= (1/2)×(cosx²)^(-1/2)×(cosx²)'= (1/2)×(cosx²)^(-1/2)×(-sinx²)×(x²)'= (1/2)×(cosx²)^(-1/2)×(-sinx²)×...