Y add 6.390000000000001 div div x_0 div div add mul -7.17 tan sub mul 1.1300000000000001 x_4 add mul 8.950000000000001 x_1 mul 0.418 x_2 mul -0.107 x_3 x_1 pow2 add -6.19 mul 17.1 x_2 add mul 23.200000000000003 x_1 mul 2.15 x_3