1. Parts of this problem are not related. (a) Find f'(*) using logarithmic differentiation f(r) = (cos 2nr)], where n is a fixed natural number. (b) The graph of g(r) and h(r) are straight lines, as given below. Evaluate the following derivatives: 1. If F(x) = g(r + h(x)), find F'(1). 2. If G(x) = sin(h(r)), find m'(0). h(I)