# 3.10.7.1.3 `<equation-inline>`

Use the `<equation-inline>`

element to represent an equation that
is presented inline within a paragraph or similar context. Inline equations are not intended to
be numbered.

When an `<equation-inline>`

element has multiple direct child
elements, each child represents an alternative form of the equation. Processors are free to
choose the form or forms that they use in deliverables. For example, if there is both an
image and MathML markup, an HTML-generating processor could output both the image reference
and the MathML with appropriate HTML `@class`

or `@id`

values to
enable dynamic showing or hiding of one form or the other based on browser capability.

## Content models

See appendix for information about this element in OASIS document type shells.

## Inheritance

+ topic/ph equation-d/equation-inline

## Example

The following example contains a paragraph that contains an
`<equation-inline>`

element with MathML markup:

`<p>MathML inline: `**<equation-inline>**
**<mathml>**
**<m:math display='inline'>**
<m:semantics>
<m:mrow>
<m:msqrt>
<m:mrow>
<m:msup>
<m:mi>a</m:mi>
<m:mn>2</m:mn>
</m:msup>
<m:mo>+</m:mo><m:msup>
<m:mi>b</m:mi>
<m:mn>2</m:mn>
</m:msup>
</m:mrow>
</m:msqrt>
</m:mrow>
</m:semantics>
**</m:math>**
**</mathml>**
**</equation-inline>**</p>

The following example contains an `<equation-inline>`

element that
uses an image as its content:

```
<p>An inline equation that contains an image:
```**<equation-inline>**
<image keyref="equation-image-01">
<alt>a squared plus b squared.</alt>
</image>
**</equation-inline>**</p>

## Attributes

The following attributes
are available on this element: Universal attribute group
,
outputclass, and `@keyref`

.