Y add mul pow x1 c mul pow add mul div c c x3 mul pow x4 c add c add x1 add mul c x3 mul c cos x3 c add c add x1 add mul c x3 mul c cos x3 mul c mul x4 mul pow x1 c pow add mul div c c x3 mul pow x4 c add c add x1 add mul c x3 mul c cos x3 c