Y add -2.79 mul tan add 0.8230000000000001 mul -58.0 x_1 add mul 0.20500000000000002 pow2 add mul 2.17 x_1 sub mul -1.4000000000000001 x_2 mul 0.426 x_1 mul 0.068 pow2 add mul -0.8130000000000001 x_1 mul 44.5 x_0