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