ValueError: x and y must have same first dimension, but have shapes (100,) and ((1,))-CodePudding

I'm trying to plot a simple function using python, numpy and matplotlib but when I execute the script it returns a ValueError described in the title.

This is my code:

"""Geometrical interpretation: In Python, plot the function y = f(x) = x**3 − (1/x)
and plot its tangent line at x = 1 and at x = 2."""

import numpy as np
import matplotlib.pyplot as plt


def plot(func):
    plt.figure(figsize=(12, 8))
    x = np.linspace(-100, 100, 100)
    plt.plot(x, func, '-', color='pink')
    plt.show()
    plt.close()


plot(lambda x: x ** 3 - (1 / x))

Please send this beginer some help :)

CodePudding user response：

This was a good effort actually. You only needed to add the y variable using y=func(x). And then plt.plot(x,y)...

so this works:

import numpy as np
import matplotlib.pyplot as plt


def plot(func):
    plt.figure(figsize=(12, 8))
    x = np.linspace(-100, 100, 100)
    y = func(x)
    plt.plot(x, y, '-', color='pink')
    plt.show()
    plt.close()


plot(lambda x: x ** 3 - (1 / x))

result: