(Asin(wt+φ))’

问题描述:

(Asin(wt+φ))’

(Asin(wt+φ))’
=Acos(wt+φ)*w
=Awcos(wt+φ)

令wx+φ=u
(Asin(wt+φ))'
=(Asinu)'*u'
=Awcos(wt+φ)