Y add -0.862 mul x_2 add mul -1.02 x_1 sub mul 0.879 x_2 mul -4.36 tan sub mul -5.6000000000000005 inv sub mul -67.8 tan add -7.53 mul -18.7 x_0 mul -86.4 x_4 mul 0.61 pow3 add -0.011 mul 92.30000000000001 x_3