<jupyter_start><jupyter_text>$$ A \underline{x} = \underline{b} $$<jupyter_code>A1 = Matrix([[3, 4, 1, 0], [4, 5, 0, 1]])
A1
A1.rref()
A2 = Matrix([[3, 4], [4, 5]])
A2.inv()
A2.inv(method='LU')
YouTubeVideo('FgXp28Abllw', width=800, height=400)
def add(a, b):
    return a + b
class TestNotebook(unittest.TestCase):

    def test_add(self):
        self.assertEqual(add(2, 2), 4)
    def test_type(self):
        self.assertIsInstance(add(1, 1), int)


unittest.main(argv=[''], verbosity=2, exit=False)<jupyter_output><empty_output>
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{'chain_length': '1', 'dir': 'jupyter-structured-clean-dedup', 'id': '378548', 'license': 'MIT', 'n_tokens_mistral': 249, 'n_tokens_neox': 230, 'n_words': 46, 'path': 'matrix_operations.ipynb', 'repo_name': 'allaccountstaken/sympy_linear_algebra', 'size': '532'}