Y add 91.0 mul x_2 sub mul 9.69 cos add mul -57.800000000000004 x_4 mul 5.23 cos add -1.29 mul -0.336 x_1 mul -9.200000000000001 sin add mul -1.34 x_3 mul -2.3000000000000003 exp add -0.805 mul 0.045 x_0