1*bf2c3715SXin Li Vector3d v(-1,2,-3); 2*bf2c3715SXin Li cout << "the absolute values:" << endl << v.array().abs() << endl; 3*bf2c3715SXin Li cout << "the absolute values plus one:" << endl << v.array().abs()+1 << endl; 4*bf2c3715SXin Li cout << "sum of the squares: " << v.array().square().sum() << endl; 5