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src/s/y/sympy-0.7.5/sympy/matrices/tests/test_matrices.py   sympy(Download)
def test_pinv_solve():
    # Fully determined system (unique result, identical to other solvers).
    A = Matrix([[1, 5], [7, 9]])
    B = Matrix([12, 13])
    assert A.pinv_solve(B) == A.cholesky_solve(B)
    assert A.pinv_solve(B) == A.LDLsolve(B)
    assert A.pinv_solve(B) == Matrix([sympify('-43/26'), sympify('71/26')])
    # Fully determined, with two-dimensional B matrix.
    B = Matrix([[12, 13, 14], [15, 16, 17]])
    assert A.pinv_solve(B) == A.cholesky_solve(B)
    assert A.pinv_solve(B) == A.LDLsolve(B)
    assert A.pinv_solve(B) == Matrix([[-33, -37, -41], [69, 75, 81]]) / 26