Y add mul x2 mul x1 mul pow add c mul c x5 c mul pow add x5 add sqrt tan x2 mul x5 pow x2 c c add x2 x1 mul x2 mul x1 mul pow add c mul c x5 c mul add c mul c pow x2 c mul add x2 x1 add x5 add sqrt tan x2 mul x5 pow x2 c