Y add 91.9 mul x_0 add mul 16.900000000000002 mul div inv add 17.900000000000002 mul -4.8500000000000005 x_2 inv add -4.48 mul -0.249 x_3 tan add mul -8.36 tan add -1.69 mul -1.67 x_1 mul 4.38 x_2 mul -0.909 x_2