# doc

40px | This is a documentation subpage for Template:Math.It contains usage information, categories, and other content that is not part of the original template page. |

The **math** template formats HTML- or wikimarkup generated mathematical formulas in the similar fashion than MathJax, a web-based TeX formulas interpreter. The template uses the `texhtml`

class, which aims to match the size of the serif font with the surrounding sans-serif font in those skins that use sans-serif (see below). The template also prevents line-wrapping.

Use this template for non-complex formulas as an alternative to using the `<math>...</math>`

format (see: Help:Math).

### Usage

Use this template to wrap an inline formula in wikitext. Examples:

{{math|''f''(''x'') {{=}} ''b''<sup>''x''</sup> {{=}} ''y''}}

- produces:
*f*(*x*) =*b*^{x}=*y*

{{math|sin π {{=}} 0}}

- produces: sin π = 0.

### Use of equals-sign and absolute value bars

If a single equals-sign ("=") is used, it will fail to render, instead showing "{{{1}}}". For example, the following template-coding would be invalid:

{{math|1 + 2 = 3}}

- produces: {{{1}}}, which is invalid code

To resolve this, either: (a) Start the formula with "`1=`

" as in:

{{math|1=1 + 2 = 3}}

- produces: 1 + 2 = 3, or else, (b) include the equals-sign in double-braces "{{=}}" as in:

{{math|1 + 2 {{=}} 3}}

- produces: 1 + 2 = 3.

A similar difficulty concerns the vertical bars ("|") used to indicate absolute value, which without care would get interpreted as part of the template syntax. The solution is different than for the equals sign: such bars should be entered as "{{!}}":

{{math|{{!}}''f''(''x'') − ''a''{{!}} < ε}}

- produces: |
*f*(*x*) −*a*| < ε.

This example can also be produced by {{math|{{mabs|''f''(''x'') − ''a''}} < ε}}

### Parameters

The following parameters are optional:

`big=1`

– This will render the formula in a bigger fontsize, increased to 165%.`size=`

– Use this to specify your own fontsize.*font-size*

{{math|big=1|1 + 2 {{=}} 3}}

- produces: 1 + 2 = 3

### Notes

The size of the font used for `texhtml`

, as defined in MediaWiki: common.css as of September 2012, is based on default fonts on Windows (Arial and Times New Roman) and is scaled 118%. However, not everyone uses the default fonts. If you find that the rendered math is not of the same size as the surrounding text, you can adjust this in your personal CSS. For instance, the DejaVu Sans and DejaVu Serif fonts do *not* need scaling, in which case `span.texhtml {font-size: 100%;}`

will restore proper display.

### See also

- {{bigmath}} is a template for stand-alone formulas, using a bigger font to match PNG rendered TeX formulas.
- {{mvar}} is a short form to refer to individual italicized maths variables in normal text.
- {{tmath}} wraps a [[TeX|Template:TeX]] math expression in
`<math>`

tags - {{langle}} and {{rangle}} for angular brackets, {{braket}} for bra–ket notation,
- Help:Mathematics