Y add 6.9 mul x_0 sub mul -0.506 div cos add -0.8220000000000001 mul 0.401 div x_4 x_2 x_3 mul 0.8250000000000001 div x_1 sub mul -83.4 cos add -9.1 mul -0.02 x_3 mul -11.0 abs add 0.96 mul -1.1300000000000001 x_4