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#include <Eigen/Dense>
#include <iostream>
using namespace Eigen;
using namespace std;
int main()
{
MatrixXf m(2,2);
MatrixXf n(2,2);
MatrixXf result(2,2);
//initialize matrices
m << 1,2,
3,4;
n << 5,6,
7,8;
// --> matrix multiplication
result = m * n;
cout << "-- Matrix m*n: --" << endl
<< result << endl << endl;
// --> coeff-wise multiplication
result = m.array() * n.array();
cout << "-- Array m*n: --" << endl
<< result << endl << endl;
// ->> coeff-wise addition of a scalar
result = m.array() + 4;
cout << "-- Array m + 4: --" << endl
<< result << endl << endl;
}
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