def test_2xe2x():
x = ADnum(2, der=1)
f = 2 * x * ADmath.exp(2 * x)
assert f.val == 4 * np.exp(4)
assert f.der == 2 * np.exp(4.0) + 8 * np.exp(4)
def test_ADmath_expr():
f = ADmath.exp(-3)
assert f == np.exp(-3)
def test_xex():
x = ADnum(2, der=1)
f = x * ADmath.exp(x)
assert f.val == 2.0 * np.exp(2.0)
assert f.der == np.exp(2.0) + 2.0 * np.exp(2.0)
def test_ADmath_exp():
f = ADmath.exp(ADnum(-3, der=1))
assert f.val == np.exp(-3)
assert f.der == np.exp(-3)
assert len(f.graph) == 1