private static Matrix Multiply(double n, Matrix m) // Multiplication by constant n
{
Matrix r = new Matrix(m.rows, m.cols);
for (int i = 0; i < m.rows; i++)
for (int j = 0; j < m.cols; j++)
r[i, j] = m[i, j] * n;
return r;
}
private static Matrix Add(Matrix m1, Matrix m2) // Sčítání matic