Suppose w=x/y+y/z, where x=e^(1t), y=2+sin(2t), and z=2+cos(5t).A ) Use the chain rule to find dw/dt as a function of x, y, z,and t. Do not rewrite x, y, and z in terms of t, and do not rewritee^(4t) as x. dwdt = Note: You may want to use exp() for theexponential function. Your answer should be an expression in x, y,z, and t; e.g. "3x - 4y"B ) Use part A to evaluate dw/dt when t=0