def test_arccosh_n1(self):
x = 2.345
a = nthderiv.arccosh(x, n=1)
b = 1 / np.sqrt(x * x - 1)
assert_allclose(a, b)
def test_arccosh_n1(self):
x = 2.345
a = nthderiv.arccosh(x, n=1)
b = 1 / np.sqrt(x*x - 1)
assert_allclose(a, b)
def test_arccosh_n0(self):
x = 2.345
a = nthderiv.arccosh(x, n=0)
b = np.arccosh(x)
assert_allclose(a, b)
def test_arccosh_n0(self):
x = 2.345
a = nthderiv.arccosh(x, n=0)
b = np.arccosh(x)
assert_allclose(a, b)