# LaTeX & MathJax basic tutorial – Highlighting equation

To highlight an equation, \bbox can be used. E.g,

# LaTeX & MathJax basic tutorial – System of equations

## System of equations

• Use \begin{array}…\end{array} and \left\{…\right.. For example, you get this:

$$\left\{ \begin{array}{c} a_1x+b_1y+c_1z=d_1 \\ a_2x+b_2y+c_2z=d_2 \\ a_3x+b_3y+c_3z=d_3 \end{array} \right.$$

# LaTeX & MathJax basic tutorial – Crossing things out

## Crossing things out

Use \require{cancel} in the first formula in your post that requires cancelling; you need it only once per page. Then use:

$$\require{cancel}\begin{array}{rl} \verb|y+\cancel{x}| & y+\cancel{x}\\ \verb|\cancel{y+x}| & \cancel{y+x}\\ \verb|y+\bcancel{x}| & y+\bcancel{x}\\ \verb|y+\xcancel{x}| & y+\xcancel{x}\\ \verb|y+\cancelto{0}{x}| & y+\cancelto{0}{x}\\ \verb+\frac{1\cancel9}{\cancel95} = \frac15+& \frac{1\cancel9}{\cancel95} = \frac15 \\ \end{array}$$

# LaTeX & MathJax basic tutorial – Fussy spacing issues & Colors

## Fussy spacing issues

These are issues that won’t affect the correctness of formulas, but might make them look significantly better or worse. Beginners should feel free to ignore this advice; someone else will correct it for them, or more likely nobody will care.

# LaTeX & MathJax basic tutorial – Arrays

## Arrays

It is often easier to read tables formatted in MathJax rather than plain text or a fixed width font. Arrays and tables are created with the array environment. Just after \begin{array} the format of each column should be listed, use c for a center aligned column, r for right aligned, l for left aligned and a | for a vertical line. Just as with matrices, cells are separated with &  and rows are broken using \\. A horizontal line spanning the array can be placed before the current line with \hline.

# LaTeX & MathJax basic tutorial – Symbols & Cases

## Symbols

In general, you have to search in long tables about a specific symbol you’re looking for, things like $\Psi$, $\delta$, $\zeta$, $\ge$, $\subseteq$ … And it turns out that this operation can be frustrating and time consuming, which can cause the buddy to abandon writing the complete $\LaTeX$ sentence in his answer, or in some cases, the complete answer itself.

# LaTeX & MathJax basic tutorial – Aligned equations

## Aligned equations

Often people want a series of equations where the equals signs are aligned. To get this, use \begin{align}…\end{align}. Each line should end with \\, and should contain an ampersand at the point to align at, typically immediately before the equals sign.

For example,

# LaTeX & MathJax basic tutorial – Matrices

## Matrices

1. Use $$\begin{matrix}…\end{matrix}$$ In between the \begin and \end, put the matrix elements. End each matrix row with \\, and separate matrix elements with & . For example,

# LaTeX & MathJax basic tutorial and quick reference for commands

## A basic tutorial

1. To see how any formula was written in any question or answer, including this one, right-click on the expression it and choose “Show Math As > TeX Commands”. (When you do this, the ‘\$’ will not display. Make sure you add these. See the next point.)

MathJax allows you to include mathematics in your web pages, either using LaTeX, MathML, or AsciiMath notation, and the mathematics will be processed using JavaScript to produce HTML, SVG or MathML equations for viewing in any modern browser.
In this article, we are going to talk about how to add Mathjax on WordPress. As a result, you can write beautiful math formula on WordPress as in LaTeX.