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