Y add mul c mul pow x1 c mul pow add x3 x1 c mul pow abs x4 c mul abs x1 mul abs add x1 mul c cos add c x3 sign add x3 x1 mul c mul pow x1 c mul pow abs x4 c mul pow abs add x3 x1 c mul abs x1 mul sign add x1 mul c cos add c x3 sin add c x3