Y mul c mul pow x3 c mul sqrt mul x3 add x3 mul add c add x2 mul c cos sqrt x2 cos x1 mul pow add x3 mul add c add x2 mul c cos sqrt x2 cos x1 c mul add c mul c sqrt mul x3 add x3 mul add c add x2 mul c cos sqrt x2 cos x1 add x3 mul div c c mul add c add x2 mul c cos sqrt x2 cos x1