T Suppose w = + where y Z = ett , y = 2 + sin (2t), and z = 2 + cos (4t). A ) Use the chain rule to find " as a function of x, y, z, and t. Do not rewrite x, y, and z in terms of t, and do not rewrite e as x. = exp(41) Note: You may want to use exp( for the exponential function. Your answer should be an expression in x, y, z, and t; e.g. "3x - 4y" B ) Use part A to evaluate - when t = 0. 13/6 Note: You can earn partial credit on this