def test_matrix_cofactor_3x3(): A = Matrix([[3, 5, 0], [2, -1, -7], [6, -1, 5]]) assert A.minor(0, 0) == -12 assert A.cofactor(0, 0) == -12 assert A.minor(1, 0) == 25 assert A.cofactor(1, 0) == -25
def test_matrix_minor_3x3(): A = Matrix([[3, 5, 0], [2, -1, -7], [6, -1, 5]]) b = A.submatrix(1, 0) assert b.determinant == 25 assert A.minor(1, 0) == 25