f(x)=sin2x怎么求导?

2025-04-06 21:23:10
推荐回答(2个)
回答1:

f(x) = sin2x = sinu, 其中 u = 2x
f'(x) = cosu·(u)' = cos2x (2x)' = 2cos2x

回答2:

sin2x的导数:2cos2x
f'(x)=2cos2x