Matrix(Math)

Class Matrix written in C++.

Public Interfaces

• void MakeItZero()
• void MakeItIdentity()
• void MakeItFromSequence(const double* sequence)
• double Determinant()
• Matrix Transpose()
• Matrix Submatrix(const int& x, const int& y)
• Matrix AdjointMatrix()
• Matrix Inverse()

Examples

Test1

#include "matrix.h"

int main()
{
    Matrix A{2};
    double seq[] = {1., 2., 3., 4.};
    A.MakeFromSequence(seq);
    Matrix B{A * A.Transpose()};
    std::cout << (A + B);
    std::cout << A.Inverse();
}

-->

6.000000	13.000000	
14.000000	29.000000	

-2.000000	1.000000	
1.500000	-0.500000

Test2

#include "matrix.h"

int main() {
  double seq[] = {1., 2., 3., 4., 5., 6., 7., 8., 9.};
  Matrix mtx{3, 3};
  mtx.MakeItFromSequence(seq);
  std::cout << mtx;
  try {
    mtx.Inverse();
  } catch (const char *s) {
    std::cout << s <<std::endl;
  }
  return 0;
}

-->

Determinant is zero. Failed to Inverse().