Differential Calculus Limit Definition of the Derivative Exploration

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Hello everyone,
Be nice to my English, because i’m French

I am in the exercise 11 of Differential Calculus Limit Definition of the Derivative Exploration and i don’t understand the use of np.gradient().

Exercise 11 :

Congrats! That concludes our exploration into the limit definition of the derivative using Python. We have approximated derivatives at a point and whole derivative functions using the limit definition. If you would like to continue your exploration, here are some ideas:

  • Modify plot_approx_deriv() so it uses np.gradient().
  • Create your own functions and investigate them through plotting and calculating derivatives.
  • Change the h_vals and/or x_vals to look at a different range or values.
  • Compare our method of plot_approx_deriv() to plotting using np.gradient()

i have used:
derivative_values.append(np.gradient(f, x, h))
Instead of:
derivative_values.append(limit_derivative(f, x, h))

But it’s not running and i don’t understand

I hope I explained it well

Thanks in advance