Y mul pow add mul c x3 mul pow x1 c add x1 add x3 mul pow cos c c mul pow cos x3 c add x1 add x3 mul c x4 div c c add mul div c c mul pow x1 c add c mul pow cos c c pow cos x3 c mul div c c mul pow x1 c add x1 add x3 mul pow cos c c mul pow cos x3 c add x1 add x3 mul c x4