Y add -0.28400000000000003 div sub sub mul 0.053 x_0 sub mul -63.300000000000004 x_3 mul 0.156 mul x_4 inv add -87.4 mul -7.5600000000000005 x_1 mul 0.19 inv add -0.5 mul 9.97 x_2 abs sub sub mul 73.0 x_4 mul -73.5 x_1 mul -0.314 exp add -5.5 mul 3.35 x_3