def test_arcsin(): x = AD(0.5, 3, 'x') z = x.arcsin() print('x=', x) print(z) assert z.val == [np.arcsin(0.5)] # np.testing.assert_array_equal(z.der, np.array([-3/np.sqrt(1 - 0.5**2)])) assert z.der == [3 * (1 - 0.5**2)**(-0.5)]
def test_arcsin_val_err_2(): x = AD(-2, 1, 'x') with pytest.raises(ValueError): x.arcsin()