## Solving quadratics with a nomogram

A nomogram is a diagram that solves a specific equation by means of adding one or more lines. Here’s an example:

The above diagram represents solving the equation $q^2 - aq + b = 0$ where $a = -3$ and $b = -1$.

I bring this up because the blog Dead Reckonings has posted a new full-length article on nomography, with a fantastic new quadratic-solving diagram on page 34. Here’s a shrunk-down version of the original:

If you want the larger version, go to the article.