def test_get_derivative_of_x_on_power_one(self):
term = Term('3x')
self.assertTrue(term.get_derivative() == 3)
def test_get_derivative_with_power_bigger_than_one(self):
term = Term('3x^2')
# also works 3x^2 == 6x^1
self.assertTrue(term.get_derivative() == Term('6x'))
def test_get_derivative_of_constant(self):
term = Term('3')
self.assertTrue(term.get_derivative() == 0)