# Maths Support

AbacusPoint facilitate input and display of mathematical expressions like \(\sqrt{3x-1}+(1+x)^2 \) using Mathjax.

The above inline mathematical expression is rendered by enclosing the TeX code sqrt{3x-1}+(1+x)^2 within opening tag \ ( and closing tag \)

Block rendering is achieved by enclosing the TeX code within tags $ $ and $$ or \ [ and \] .

**Examples:**

The following is an example of an inline expression:-

Each set \(X_r\) contains 5 elements and each set \(Y_r\) contains 2 elements and \( \begin{array}{c} 20 \\ \bigcup \\ r=1 \end{array} X_r = S = \begin{array}{c} n \\ \bigcup \\ r=1 \end{array} Y_r\).

Following expressions are rendered as blocks:

\[\ a_1 + a_2 + a_3 + ........+a_n + ..... = \sum_{k=1}^\infty a_k \]

$$ \left\{\begin{matrix} a & b & c& \\ 1 & 2 & 3 & \\ p & q & r & \end{matrix}\right. $$

It may take a little while depending the speed of your internet connection for the Mathjax CDN site to render the TeX codes as math expressions. Right click on the rendered mathematical expressions to see the TeX or MathML code. (The opening and closing tags are not shown). MathML is disabled on this site, so use only TeX (or LaTeX). You can also copy the code for re-use, zoom and control the zoom parameters by right clicking the expressions and choosing the appropriate menu from the small popup window.

To include math expressions in your posts, if you know TeX commands, or you want to learn TeX, you can directly compile math expressions in the text editor. Remember to include the TeX commands within TeX tags. Or you can use an online TeX editor by clicking on abacuspoint text editor toolbar, compile your math expression, copy and paste in the AbacusPoint text editor. Again, remember to type the appropriate TeX tags, \ ( ....... \) for inline and $ $....... $$ or \ [ ....... \] for block.

**TeX /LaTeX code examples for beginners:**

For those beginners not conversant with TeX, common TeX Symbols and usage is explained through examples in TeX Symbols and Examples. More Symbols are available here.

The full set of Latex codes is available at http://www.ctan.org