Y add 6.5600000000000005 div mul add sub mul -0.22 x_1 mul -87.80000000000001 div tan sub mul 0.764 x_2 mul -55.6 x_0 x_0 mul -8.67 x_1 x_2 inv add mul 0.459 exp add 3.37 mul 53.300000000000004 x_3 mul 81.0 x_0