Y add 39.5 mul sqrt add 50.1 mul 0.6930000000000001 x_4 div add mul 2.0300000000000002 exp add -0.716 mul -82.4 x_1 sub mul -7.45 cos add -0.488 mul 0.7030000000000001 x_3 mul 0.92 mul mul x_2 x_5 add mul -86.9 x_7 mul 4.1 mul x_8 x_6 x_0