TutorialLinAlgExSolveLDLT.cpp

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#include <iostream>
#include <Eigen/Dense>
 
int main()
{
   Eigen::Matrix2f A, b;
   A << 2, -1, -1, 3;
   b << 1, 2, 3, 1;
   std::cout << "Here is the matrix A:\n" << A << std::endl;
   std::cout << "Here is the right hand side b:\n" << b << std::endl;
   Eigen::Matrix2f x = A.ldlt().solve(b);
   std::cout << "The solution is:\n" << x << std::endl;
}

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