We’ve enabled the discourse-math plugin powered by MathJax so now you can include nice formulas like \sigma = \sqrt{ \frac{1}{N} \sum_{i=1}^N (x_i -\mu)^2} in your forum posts!

The formula above is generated from this markdown

```
$\sigma = \sqrt{ \frac{1}{N} \sum_{i=1}^N (x_i -\mu)^2}$
```