#include <iostream>#include <Eigen/Dense>intmain(){Eigen::Matrix3fA;A<<1,2,1,2,1,0,-1,1,2;std::cout<<"Here is the matrix A:\n"<<A<<std::endl;std::cout<<"The determinant of A is "<<A.determinant()<<std::endl;std::cout<<"The inverse of A is:\n"<<A.inverse()<<std::endl;}