Find the differential of the function w = a sin (4yz!). dw = dx dy + dz Note: Your answers should be expressions of x, y and z; e.g. "3xy + 4z"Let z = f(u, v) = sin u cos v, u = 5x2 - 4y, v = -3x - y, and put g(x, y) = (u(x, y), v(x, y) ). The derivative matrix D(fog) (x, y) = ( Leaving your answer in terms of u, v, x, y )