Transform the following vectors into cylindrical coordinates and

Transform the following vectors into cylindrical coordinates and then evaluate them at the indicated points:
(a) A = x(x + y) at P (1, 2, 3),
(b) B = x(y – x) + y (x – y) at P2 (1, 0, 2),
(c) C = xy2 / (x2 + y2) – yx2 / (x2 + y2) z4 at P3 (1 – 1, 2),
(d) D = Rsin??????cos??????cos2 ??at P4 (2, ??2, ??????
(e) E = Rcos??????sin?????sin2 ??at P5 (3, ???????