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