gitpitch/docs/maths/mathjax-formulas.md
2020-09-29 07:45:10 +01:00

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# MathJax Formulas
MathJax support is disabled by default. When enabled you can render [MathJax Formulas](https://www.mathjax.org/) on any side.
### Activation
To enable MathJax for your slide deck activate the `mathjax` setting in your [PITCHME.yaml](/conventions/pitchme-yaml.md):
```yaml
mathjax : TeX-MML-AM_HTMLorMML-full
```
Once this setting is enabled you can use [Math Widget](#math-widget) syntax to render your formulas.
### Math Widget
The following markdown snippet demonstrates math widget syntax:
```markdown
@math[properties...]
Your MathJax formulas go here.
@math
```
?> The `properties...` list expects a comma-separated list of property `key=value` pairs.
### Grid Native Props
The *Math Widget* is a [grid native widget](/grid-layouts/native-widgets.md) meaning it also directly supports [grid layouts](/grid-layouts/) properties:
[Grid Widget Properties](../_snippets/grid-widget-properties.md ':include')
### Sample Slide
The following slide demonstrates a math formula rendered using math widget syntax. The markdown snippet used to create this slide takes advantage of numerous *grid native properties* to position, size, and transform the formula on the slide:
![Sample slide demonstrating the math widget](../_images/gitpitch-maths-widget.png)
Remember to [activate MathJax](#activation) for your deck and then copy this markdown snippet to experiment with math formulas on your own slide deck:
```markdown
@math[drag=100 50, pad=30px, rotate=-20, fit=2.2]
`\[
\left( \sum_{k=22}^n a_k b_k \right)^{\!\!2} \leq
\left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)
\]`
@math
```
### Broken Syntax
In some circumstances the syntax in your math formulas may conflict with the markdown processor that parses your **PITCHME.md** file. When this happens math formulas may render incorrectly on your slide.
If a formula does not render as expected on your slides, try enclosing your formula in *backticks*. This will give the markdown processor a better chance of rendering your formula correctly.
For example, the following formula demonstrates broken rendering:
```markdown
@math[
$\sum_{m} \sum_{d}$
@math
```
This following markdown snippet uses *backticks* to solve the rendering problems with this formula:
```markdown
@math
`$\sum_{m} \sum_{d}$`
@math
```
With *backticks* enhanced syntax this math formula renders cleanly as follows:
![Sample slide demonstrating the math backticks syntax](../_images/gitpitch-maths-backticks.png)