MatrixXd ones = MatrixXd::Ones(3,3);EigenSolver<MatrixXd> es(ones, false);cout << "The eigenvalues of the 3x3 matrix of ones are:" << endl << es.eigenvalues() << endl;
MatrixXd ones = MatrixXd::Ones(3,3);
EigenSolver<MatrixXd> es(ones, false);
cout << "The eigenvalues of the 3x3 matrix of ones are:"
<< endl << es.eigenvalues() << endl;