.. _LaTeX notation: LaTeX notation ============== LaTeX is the de facto standard mark-up language for mathematical notation. It's syntactically very simple, but there's a fairly steep learning curve in learning the names of commands. In Numbas, **inline maths** (maths notation that sits on the same line as the surrounding text) is delimited either by dollar signs, e.g.:: Calculate the expansion up to the $x^4$ term. produces Calculate the expansion up to the :math:x^4 term. **Display-mode** maths, which is displayed on its own line and rendered less compactly, is delimited by $ and $. For example:: The quadratic formula is $x = \frac{ -b \pm \sqrt{ b^2-4ac } }{ 2a }$ produces The quadratic formula is .. math:: x = \frac{ -b \pm \sqrt{ b^2-4ac } }{ 2a } If you've never used LaTeX before, a couple of good places to start are the LaTeX maths Wikibook _ and the Art of Problem Solving LaTeX Guide _. Bear in mind that LaTeX is only used for maths-mode, so the text-mode LaTeX commands don't apply. To find the command for a symbol you want to use, draw it in Detexify _ and it will show you the commands for the most similar-looking symbols. MathJax ------- Numbas uses MathJax _ to render LaTeX notation. The default Numbas theme loads MathJax from cdnjs.org _, a free service provided by a combination of sponsors. If you'd like your exams to load MathJax from a different location, you can set your preferred URL in your account settings page: click on the account dropdown at the top-right of the page, then :guilabel:Settings. Any exams or questions you download from the editor will load MathJax from your preferred URL.