1 Matrix3f A;
2 Vector3f b;
3 A << 1,2,3, 0,5,6, 0,0,10;
4 b << 3, 3, 4;
5 cout << "Here is the matrix A:" << endl << A << endl;
6 cout << "Here is the vector b:" << endl << b << endl;
7 Vector3f x = A.triangularView<Upper>().solve(b);
8 cout << "The solution is:" << endl << x << endl;
9