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