我是ipython的新手 . 我在ipython中有这段代码

def derivative(x):

return 3*(x^2)

derivative_estimate = lambda x: difference_quotient(cube, x, h=0.00001)

x = range(-10, 10)

import matplotlib.pyplot as plt

plt.title("Actual Derivatives vs Estimates")

x = range(-10,10)

plt.plot(x, map(derivative, x), 'rx', label = 'Actual') # red x

plt.plot(x, map(derivative_estimate, x), 'b+', label = 'Estimate') # blue +

plt.show()

当我尝试运行它时，它会向我显示这些错误

ValueError Traceback (most recent call last)

in ()

6 plt.title("Actual Derivatives vs Estimates")

7 x = range(-10,10)

----> 8 plt.plot(x, map(derivative, x), 'rx') # red x

9 plt.plot(x, map(derivative_estimate, x), 'b+') # blue +

10 plt.show()

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\pyplot.py in plot(*args, **kwargs)

3152 ax.hold(hold)

3153 try:

-> 3154 ret = ax.plot(*args, **kwargs)

3155 finally:

3156 ax.hold(washold)

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\__init__.py in inner(ax, *args, **kwargs)

1809 warnings.warn(msg % (label_namer, func.__name__),

1810 RuntimeWarning, stacklevel=2)

-> 1811 return func(ax, *args, **kwargs)

1812 pre_doc = inner.__doc__

1813 if pre_doc is None:

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in plot(self, *args, **kwargs)

1422 kwargs['color'] = c

1423

-> 1424 for line in self._get_lines(*args, **kwargs):

1425 self.add_line(line)

1426 lines.append(line)

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _grab_next_args(self, *args, **kwargs)

384 return

385 if len(remaining) <= 3:

--> 386 for seg in self._plot_args(remaining, kwargs):

387 yield seg

388 return

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _plot_args(self, tup, kwargs)

362 x, y = index_of(tup[-1])

363

--> 364 x, y = self._xy_from_xy(x, y)

365

366 if self.command == 'plot':

C:\Users\User\Anaconda3\lib\site-packages\matplotlib\axes\_base.py in _xy_from_xy(self, x, y)

221 y = _check_1d(y)

222 if x.shape[0] != y.shape[0]:

--> 223 raise ValueError("x and y must have same first dimension")

224 if x.ndim > 2 or y.ndim > 2:

225 raise ValueError("x and y can be no greater than 2-D")

ValueError: x and y must have same first dimension,

有谁可以帮我解决这个问题？