1 typedef Matrix<float,3,3> Matrix3x3; 2 Matrix3x3 m = Matrix3x3::Random(); 3 Matrix3f y = Matrix3f::Random(); 4 cout << "Here is the matrix m:" << endl << m << endl; 5 cout << "Here is the matrix y:" << endl << y << endl; 6 Matrix3f x; 7 x = m.householderQr().solve(y); 8 assert(y.isApprox(m*x)); 9 cout << "Here is a solution x to the equation mx=y:" << endl << x << endl; 10