Find f′(x)f'(x)f′(x) for f(x)=cos(sinx)f(x) = \cos(\sin x)f(x)=cos(sinx).
−sin(sinx)⋅cosx-\sin(\sin x) \cdot \cos x−sin(sinx)⋅cosx
sin(cosx)\sin(\cos x)sin(cosx)
−sin(cosx)-\sin(\cos x)−sin(cosx)
cos(cosx)\cos(\cos x)cos(cosx)