*Display mathematic*mode of TeX within Blackboard.

This guide refers to typing and displaying mathematical notation. This method is not suitable for building formulas for use in Calculated Formula question types.

For more information refer to:

- LaTeX support in Mathtype.
- LaTeX on the web: basic examples. Note that the examples should have $$ added at the beginning and end, as shown below.

## Contents of this page

## Basic operation

When using the Blackboard text editor, for example when creating a content item, or a test question, you can use the $$..$$ TeX primitive syntax.

### Superscript example

$$e^{e^{e^{e^{x}}}}$$

in Blackboard:

Results in:

In the Blackboard App it looks like this:

#### Accessibility

The notation is rendered as a graphic. Importantly users with a screen reader will see accurate alternate text, which in this example is:

“e to the power of e to the power of e to the power of e to the power of x end exponent end exponent end exponent”.

### Arithmetic example

$$\sqrt[3]{8}=8^{\frac{1}{3}}=2$$

in Blackboard:

Results in:

In the Blackboard App it looks like this:

#### Accessibility

The notation is rendered as a graphic. Importantly users with a screen reader will see accurate alternate text, which in this example is:

“cube root of 8 equals 8 to the power of 1 third end exponent equals 2”.

### Fractions

$$\left.\frac{1}{1+x^2}\right|_0^\infty$$

in Blackboard:

Results in:

In the Blackboard App it looks like this:

#### Accessibility

The notation is rendered as a graphic. Importantly users with a screen reader will see accurate alternate text, which in this example is:

“open fraction numerator 1 over denominator 1 plus x squared end fraction close vertical bar subscript 0 superscript infinity”.

### Integrals

$$\int_0^2x^2dx$$

in Blackboard:

Results in:

In the Blackboard App it looks like this:

#### Accessibility

“integral subscript 0 superscript 2 x squared d x”.

### Matrix

$$\begin{bmatrix}a & b\\c & d\end{bmatrix}$$

in Blackboard:

Results in:

In the Blackboard App it looks like this:

#### Accessibility

“open square brackets table row a b row c d end table close square brackets”.

## Issues to be aware of

### When you go back to edit, be careful that your TeX is not adjusted.

For example

$$\begin{bmatrix}a & b\\c & d\end{bmatrix}$$

may be changed to

$$\begin{bmatrix}a §amp; b\\c §amp; d\end{bmatrix}$$.

### Adding text before and after the notation may not end up how you intend

For example

$$e^{e^{e^{e^{x}}}}$$ and then $$\sqrt[3]{8}=8^{\frac{1}{3}}=2$$

Results in:

## Alternative approaches

### Use the Mathtype interface within Blackboard

Select the Mathtype option from the text editor:

and refer to the Blackboard guide on using MathType.

### Create your notation in a different application, take a screenshot of it, and add it within Blackboard

1. **Crop **and **save **your screenshot to a png file on your computer.

2. Use the **Plus icon** to add it within your text editor:

3. Select **Insert Local File.**

4. **Right click** on the image and open the **Image… menu**.

5. Enter and submit an **alternative description **that explains your notation in written terms, to make it accessible to those using screen readers.