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Question 5 (0.5 points) Please note the two parts in this question are not related. (a) Find an equation of the tangent plane to the surface of z = x2 + ye(3ry-y') at (-1, -3, -2). (b) Given that the function T=f(x,y,z) is a differentiable function with f(2, -3, -1) - 5, fx(2, -3, -1) - -2, fy(2, -3, -1) - 6, f2(2, -3, -1) = 3, find the linear approximation and the differential of the function at (2,-3,-1). Use the differential to estimate the total change AT when x is increased by 0.1, y is decreased by 0.03, and z is increased by 0.04. Enter your answer in the blank below. Round your answer to two decimal places. Your