1 Tridiagonalization<MatrixXf> tri; 2 MatrixXf X = MatrixXf::Random(4,4); 3 MatrixXf A = X + X.transpose(); 4 tri.compute(A); 5 cout << "The matrix T in the tridiagonal decomposition of A is: " << endl; 6 cout << tri.matrixT() << endl; 7 tri.compute(2*A); // re-use tri to compute eigenvalues of 2A 8 cout << "The matrix T in the tridiagonal decomposition of 2A is: " << endl; 9 cout << tri.matrixT() << endl; 10
