Y mul div c c mul pow mul x3 mul pow add c add x2 add x1 mul c pow x2 c c cos x2 div c c mul pow add c add x2 add x1 mul c pow x2 c c mul pow cos x2 c add mul add c mul c x2 cos x2 mul add c add x2 add x1 mul c pow x2 c sin x2