Y add 6.74 div div div x_2 div pow2 add 0.809 mul 9.31 x_3 div x_2 sub mul 2.9 x_4 mul -0.624 pow2 add -26.400000000000002 mul 0.6900000000000001 x_0 div x_1 sin add -9.450000000000001 mul 4.05 x_0 tan add -9.72 mul 2.87 x_0