f(x)可微,y=f(sinx)-sinf(x),求dy,

问题描述:

f(x)可微,y=f(sinx)-sinf(x),求dy,

y‘=f’(sinx)cosx-cosf(x)*f'(x)
dy=[f’(sinx)cosx-cosf(x)*f'(x)]dx确定吗?当然。绝对没错