On other SE sites like Physics, Math, MathOverflow, we have the possibility to write equations in what is called 'MathJax'. This allows you to write equations the way you would write them in LaTeX, which will also get them rendered in the same way as they would be in a pdf generated by LaTeX code. This is incredibly useful when one wants to write clear mathematics.
Since a large part of our site is focused on the history of mathematics, I think we should get MathJax as well, since you run into ugly and unreadable texts otherwise (e.g. my recent answer about complex numbers, although it's not that bad). Do you guys agree?
From the overwhelmingly positive reaction to this question, it has become clear that this community agrees that we need MathJax. A list of answers that could be significantly improved can be found in the answer by Logan Maingi. I will try to update that list continuously. Note that the current absence of MathJax inhibits some (including myself) to incorporate more mathematics into our post; this is a serious issue, and I hope we can soon get MathJax, so we will no longer be hesitant to formulate precise, mathematical answers. If anyone from the SE team reads this: Please let us know how we can get MathJax implemented here.