Page 1 of 3 ZOOM 1) Use implicit differentiation to find - at the given point. dy a) ycosx = x2 +y; (7, 0) 2) Use chain rule to find dz dt a) z = ry3 - x2y, x = 12 + 1, y = 12 - 1 3) Find - and "Z at given point. a) xe" + yz + zet =0, (0, 0, 0)