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