Y add 5.16 mul div add mul 68.7 x_6 mul -13.8 inv add 71.0 mul 0.203 x_5 mul x_4 x_3 div mul mul add mul 27.700000000000003 x_2 mul 33.9 x_2 cos add -45.1 mul 0.9420000000000001 x_6 x_2 sub mul -0.846 x_0 mul 60.400000000000006 x_1