def write_antiderivative(self):
    randy = Randolph()
    randy.to_corner((DOWN + LEFT))
    randy.shift((2 * RIGHT))
    words = TexMobject('{d(', '???', ') \\over \\,', 'dt}', '=', 't(8-t)')
    words.set_color_by_tex('t(8-t)', VELOCITY_COLOR)
    words.set_color_by_tex('???', DISTANCE_COLOR)
    words.set_color_by_tex('dt', TIME_COLOR)
    words.scale(0.7)
    self.play(FadeIn(randy))
    self.play(PiCreatureSays(randy, words, target_mode='confused', bubble_kwargs={'height': 3, 'width': 4}))
    self.play(Blink(randy))
    self.wait()
def write_antiderivative(self):
    randy = Randolph()
    randy.to_corner((DOWN + LEFT))
    randy.shift((2 * RIGHT))
    words = TexMobject('{d(', '???', ') \\over \\,', 'dt}', '=', 't(8-t)')
    words.set_color_by_tex('t(8-t)', VELOCITY_COLOR)
    words.set_color_by_tex('???', DISTANCE_COLOR)
    words.set_color_by_tex('dt', TIME_COLOR)
    words.scale(0.7)
    self.play(FadeIn(randy))
    self.play(PiCreatureSays(randy, words, target_mode='confused', bubble_kwargs={'height': 3, 'width': 4}))
    self.play(Blink(randy))
    self.wait()