1 #include <iostream> 2 #include <Eigen/Dense> 3 4 using namespace Eigen; 5 using namespace std; 6 main()7int main() 8 { 9 MatrixXd m = MatrixXd::Random(3,3); 10 m = (m + MatrixXd::Constant(3,3,1.2)) * 50; 11 cout << "m =" << endl << m << endl; 12 VectorXd v(3); 13 v << 1, 2, 3; 14 cout << "m * v =" << endl << m * v << endl; 15 } 16