Y add -9.31 div mul exp add 71.10000000000001 mul 11.3 x_0 add add mul 0.745 mul x_3 pow2 add -24.400000000000002 mul -0.985 x_2 mul -3.4000000000000004 cos add -0.311 mul -88.9 mul x_2 x_1 mul -0.9560000000000001 x_3 x_1