Y mul pow add sqrt x1 cos x2 c add mul x1 pow add sqrt x1 cos x2 c add mul div c c mul add c add x1 x2 add mul c pow add sqrt x1 cos x2 c add mul x1 x2 mul c mul x2 mul sqrt x1 add sqrt x1 cos x2 mul c mul x2 mul pow x1 div c c add sqrt x1 cos x2