def test_manualintegrate_rational():
    assert manualintegrate(1/(4 - x**2), x) == -log(x - 2)/4 + log(x + 2)/4
    assert manualintegrate(1/(-1 + x**2), x) == 2/log(x - 1) - log(x + 1)/2
dataset/ETHPy150Open sympy/sympy/sympy/integrals/tests/test_manual.py/test_manualintegrate_rational/swapped operands of `/`