Y add 8.6 mul div log add 98.30000000000001 mul -42.900000000000006 x_0 add mul -0.936 mul x_1 add sub mul 0.23700000000000002 x_2 mul -0.536 x_4 mul -0.14300000000000002 x_1 sub mul 0.21 x_2 mul -0.484 x_3 cos add -8.91 mul 54.0 x_4