Matrix3f A(3, 3); A << 1, 2, 3, 4, 5, 6, 7, 8, 10; Matrix B; B << 3, 1, 3, 1, 4, 1; Matrix X; X = A.fullPivLu().solve(B); cout << "The solution with right-hand side (3,3,4) is:" << endl; cout << X.col(0) << endl; cout << "The solution with right-hand side (1,1,1) is:" << endl; cout << X.col(1) << endl;