3: Suppose 1s = + E, where y :2: :r: = e\

Suppose w = + where a: = e", y = 2 sin (2t), and z = 2 -h 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 e4t as x. Note: You may want to use expo 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.