In this post we will see how to visualize a function of two variables in two ways. First, we will create an intensity image of the function ...

A polar system is a two-dimensional coordinate system, where there are two coordinates: the radial and the angular coordinates. The radial ...

And after the Epitrochoids , we're going to see another family of wonderful figures: The Lissajous curves. The equations that describe t...

The Fourier transform does not give any information on the time at which a frequency component occurs. One approach which can give informati...

ginput is a function that enables you to select points from a figure using the mouse. This post is a simple example on how to use it. from ...

If we roll a die a large number of times, and we compute the mean and variance, as exaplained here , we’d expect to obtain a mean = 3.5 and ...

The following script plot the biorhythm of a person born in 14/3/1988 in a range of 20 days. from datetime import date import matplotlib.da...

Few post ago we have seen how to plot the Sierpinski triangle . This post is an update that shows how to create an animation where at each s...

The Collatz conjecture is a famous unsolved problem in number theory. Start with any positive integer n. Repeat the following steps: If n ...

In this example we will see how to use the function fmin to minimize a function. The function fmin is contained in the optimize module of th...

We will see how to evaluate a function using numpy and how to plot the result. import pylab import numpy x = numpy.linspace(-15,15,100) # ...