Y add -9.040000000000001 div x_1 sub mul -16.6 mul x_0 div x_1 x_2 mul 19.900000000000002 div add mul 5.18 cos add -2.35 mul -0.661 x_3 sub mul -4.04 x_4 mul -0.11900000000000001 x_3 add mul -7.57 x_2 mul 0.67 x_4