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