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