(Asin(wt+φ))’
问题描述:
(Asin(wt+φ))’
答
(Asin(wt+φ))’
=Acos(wt+φ)*w
=Awcos(wt+φ)
答
令wx+φ=u
(Asin(wt+φ))'
=(Asinu)'*u'
=Awcos(wt+φ)