Y mul x3 mul pow add c add mul c x3 mul x3 add c add x1 mul c x3 c mul add c pow tan mul x1 mul x3 pow add c add mul c x3 mul x3 add c add x1 mul c x3 c c add c add mul c x3 add mul x3 add c add x1 mul c x3 mul c mul x1 x3