00001 #include <iostream> 00002 #include <Eigen/Dense> 00003 00004 using namespace std; 00005 using namespace Eigen; 00006 00007 int main() 00008 { 00009 Matrix3f A; 00010 A << 1, 2, 1, 00011 2, 1, 0, 00012 -1, 1, 2; 00013 cout << "Here is the matrix A:\n" << A << endl; 00014 cout << "The determinant of A is " << A.determinant() << endl; 00015 cout << "The inverse of A is:\n" << A.inverse() << endl; 00016 }