Question 2 a). The polar coordinates, x = rcos and y = rsin 0 changes f (x, y) to g (r, 0) (1). Find 202 . [Verify using Mathematical] (1i). Given that of _of af_of_1 evaluate a'g ax 2 at the point (r, 0) = (2, 5 ). [Verify using Mathematical (8 + 2 = 10 marks