Y add 5.71 sub mul 2.54 mul div x_1 sub mul 5.79 div div x_2 x_4 add mul -70.5 inv add 0.46 mul -42.400000000000006 x_3 mul 49.1 x_0 mul -21.0 x_3 div x_3 log add 6.65 mul 0.637 x_1 mul -0.861 tan add 0.66 mul -74.10000000000001 x_4