(D) Note that f(g(u)) = tan−^1 (e^2 u); then the derivative is .(D) Let . Then cos (xy)[xy′ + y] = y′. Solve for y′.(E) (D) Note that f(g(u)) = tan−^1 (e^2 u); then the derivative is .(D) Let . Then cos (xy)[xy′ + y] = y′. Solve for y′.(E)