Y mul x1 mul pow add mul x3 add x4 mul c x1 tan add mul div c c mul x3 pow x4 c tan add x4 x3 c add mul c x3 mul c mul add c pow tan add mul div c c mul x3 pow x4 c tan add x4 x3 c add c add pow tan add x4 x3 c mul div c c mul x3 pow x4 c