Let y = f (U) be a differentiable function, then y = f (LN (SiNx)) derivative y '=

Let y = f (U) be a differentiable function, then y = f (LN (SiNx)) derivative y '=

y'=f'(lnsinx)(lnsinx)'=f'(lnsinx) (sinx)'/sinx=f'(lnsinx) cotx