Y add mul c mul x3 mul x3 pow add c add mul c x3 mul x3 add c add x4 add x3 mul c tan add x3 mul c x3 c mul c mul x3 mul pow x3 c mul pow add c add mul c x3 mul x3 add c add x4 add x3 mul c tan add x3 mul c x3 c add x3 mul c x4