def mention_lower_bound(self):
    lower_bound = self.integral.get_part_by_tex('0')
    circle = Circle(color=YELLOW)
    circle.replace(lower_bound)
    circle.scale_in_place(3)
    zero_label = lower_bound.copy()
    self.play(ShowCreation(circle))
    self.play(Indicate(lower_bound))
    self.play(zero_label.scale, 1.5, zero_label.next_to, self.graph_origin, DOWN, MED_LARGE_BUFF, FadeOut(circle))
    self.wait()
    self.zero_label = zero_label
def mention_lower_bound(self):
    lower_bound = self.integral.get_part_by_tex('0')
    circle = Circle(color=YELLOW)
    circle.replace(lower_bound)
    circle.scale_in_place(3)
    zero_label = lower_bound.copy()
    self.play(ShowCreation(circle))
    self.play(Indicate(lower_bound))
    self.play(zero_label.scale, 1.5, zero_label.next_to, self.graph_origin, DOWN, MED_LARGE_BUFF, FadeOut(circle))
    self.wait()
    self.zero_label = zero_label