- Joined
- Nov 24, 2012

- Messages
- 1,552

The implementation of MathJax we're running now has all of the available extensions being loaded.

**Bbox:**

Code:

`[MATH]\bbox[5px,border:2px solid red]{\frac{x}{y}}[/MATH]`

Code:

`[MATH]\color{white}\bbox[5px,blue]{\sum_{k=0}^n\left(k^3 \right)=\left(\sum_{k=0}^n\left(k \right) \right)^2}[/MATH]`

**Cancel:**

The cancel commands (we previously had this extension, but we thought it would be good to show the variants):

Code:

`[MATH]\frac{\cancel{a}x}{\cancel{a}}=x[/MATH]`

Code:

`[MATH]\frac{\bcancel{a}x}{\bcancel{a}}=x[/MATH]`

Code:

`[MATH]\frac{\xcancel{a}x}{\xcancel{a}}=x[/MATH]`

**Chemical equations:**

Code:

`[MATH]\ce{SO4^2- + Ba^2+ -> BaSO4 v}[/MATH]`

**Enclose:**

Code:

`[MATH]\enclose{circle}[mathcolor="red"]{\color{black}{x}}[/MATH]`

Code:

`[MATH]\enclose{circle,box}{x}[/MATH]`

Code:

`[MATH]13\enclose{longdiv}{169}[/MATH]`

Code:

`[MATH]\enclose{left}{\frac{x}{y}}[/MATH]`

**Extpfeil:**

Code:

`[MATH]x\xtwoheadrightarrow y[/MATH]`

Code:

`[MATH]x\xtwoheadleftarrow y[/MATH]`

Code:

`[MATH]x\xmapsto y[/MATH]`

Code:

`[MATH]x\xlongequal y[/MATH]`

Code:

`[MATH]x\xtofrom y[/MATH]`

You can even define your own arrow as follows:

Code:

`[MATH]\Newextarrow{\xrightharpoonup}{5,10}{0x21C0}[/MATH]`

and then use it thereafter (in that post):

Code:

`[MATH]x\xrightharpoonup y[/MATH]`

**Text tip:**

This allows you to define information the will pop up when the mouse cursor hovers over your expression.

Code:

`[MATH]\texttip{\int_a^b f(x)\,dx=F(b)-F(a)}{The Anti-Derivative form of The Fundamental Theorem of Calculus}[/MATH]`

**Unicodes:**

Code:

`[MATH]\unicode[.55,0.05]{x22D6}[/MATH]`

**Macros:**

Differentiation:

\d{y}{x}

\(\displaystyle \d{y}{x}\)

Partial differentiation:

\pd{f}{x}

\(\displaystyle \pd{f}{x}\)

Scientific exponentiation:

\E{n}

\(\displaystyle \E{n}\)

Trig. functions:

\csch

\arccsc

\arcsec

\arccot

\sech

\arsinh

\arcosh

\artanh

\arcsch

\arsech

\arcoth

\cis

If you have any questions about these, please feel free to ask.