Colorized Equations

Idea: Let’s start a list of the best “colorized equations” we can find. They can become roots for new articles that emerge. For example:

$$ \lim_{x \to +\infty} \frac{3x^2 +7x^3}{x^2 +5x^4} = 3.\ $$

Haven’t you already used some in your articles? I remember a link to the ones for the Fourier transform (which was very useful).

Yep, Stuart Riffle had the idea in his Fourier Transform article and it was great. I think more equations need this treatment as a first introduction. Would be neat to build a library of them.