Y add mul pow x2 c add mul x2 pow add x2 tan x1 c add mul pow add x2 tan x1 c add x2 x3 mul c mul x2 mul pow add x2 tan x1 c add x2 x3 mul c mul pow x2 c add x3 mul x2 mul pow add x2 tan x1 c add x2 x3