Y add -13.700000000000001 mul add mul 0.581 pow2 add 7.16 mul 87.7 x_2 mul -23.900000000000002 exp sub mul -0.116 exp add -6.05 mul -4.04 x_3 add mul 0.316 x_3 mul 0.14200000000000002 x_1 mul sub mul -5.91 x_1 mul -0.131 x_3 x_0