Y mul pow x1 c mul add c pow tan mul pow x1 c add x2 add pow x1 c mul c mul x2 mul pow x3 c add c x3 c mul add pow x1 c add mul c x2 mul x2 mul pow x3 c add c x3 cos tan mul pow x1 c add x2 add pow x1 c mul c mul x2 mul pow x3 c add c x3