Equation Editor

The equation editor is a powerful tool that allows you to create the most complex math and science equations within your Lesson Page or Test.

I created a lesson but equations don’t work, what’s up?

You are most likely using the Rich Text Editor,which doesn’t allow textiles and equations. In order to do equations in a lesson page you must create a new lesson in the Pro Editor. For more information on how to create and use the pro editor, please read the How to: Pro Editor lesson.

How do I create a equation in my lesson and or test?

All equations must be used in the <math> ... </math> syntax. Which is very similar to writing HTML tags. You can separate regular text from the equation.

For example, typing: <math>2+2=4</math> will generate this image: 2+2=4 .

What format does the equations render in?

When you create a equation syntax it is rendered as a PNG image.

What can I do with the equation editor?

There is so much you can do with the editor, here are a quick few, simple, equations you can do:

Code	Result
2 + 2 = 4
6 \div 2 = 3	$6 \div 2 = 3$
12 * 2-10=34
a ^ 2 + b ^ 2 = c ^ 2
\frac{2}{4}=0.5	$\frac{2}{4}=0.5$

What all can I produce with the equation editor?

The following is a breakdown of exactly what you can do, and how to do it:

Functions, Symbols, and Special Characters

Accents/Diacritics
\acute{a} \grave{a} \hat{a} \tilde{a} \breve{a}	$\acute{a} \grave{a} \hat{a} \tilde{a} \breve{a}$
\check{a} \bar{a} \ddot{a} \dot{a}	$\check{a} \bar{a} \ddot{a} \dot{a}$
Standard functions
\sin a \cos b \tan c	$\sin a \cos b \tan c$
\sec d \csc e \cot f	$\sec d \csc e \cot f$
\arcsin h \arccos i \arctan j	$\arcsin h \arccos i \arctan j$
\sinh k \cosh l \tanh m \coth n	$\sinh k \cosh l \tanh m \coth n$
\operatorname{sh}o \operatorname{ch}p \operatorname{th}q	$\operatorname{sh}o \operatorname{ch}p \operatorname{th}q$
\operatorname{argsh}r \operatorname{argch}s \operatorname{argth}t	$\operatorname{argsh}r \operatorname{argch}s \operatorname{argth}t$
\lim u \limsup v \liminf w \min x \max y	$\lim u \limsup v \liminf w \min x \max y$
\inf z \sup a \exp b \ln c \lg d \log e \log_{10} f \ker g	$\inf z \sup a \exp b \ln c \lg d \log e \log_{10} f \ker g$
\deg h \gcd i \Pr j \det k \hom l \arg m \dim n	$\deg h \gcd i \Pr j \det k \hom l \arg m \dim n$
Modular arithmetic
s_k \equiv 0 \pmod{m} a \bmod b	$s_k \equiv 0 \pmod{m} a \bmod b$
Derivatives
\nabla \partial x dx \dot x \ddot y	$\nabla \partial x dx \dot x \ddot y$
Sets
\forall \exists \empty \emptyset \varnothing	$\forall \exists \empty \emptyset \varnothing$
\in \ni \not \in \notin \subset \subseteq \subsetneq \supset \supseteq \supsetneq	$\in \ni \not \in \notin \subset \subseteq \subsetneq \supset \supseteq \supsetneq$
\cap \bigcap \cup \bigcup \biguplus \setminus \smallsetminus	$\cap \bigcap \cup \bigcup \biguplus \setminus \smallsetminus$
\sqsubset \sqsubseteq \sqsupset \sqsupseteq \sqcap \sqcup \bigsqcup	$\sqsubset \sqsubseteq \sqsupset \sqsupseteq \sqcap \sqcup \bigsqcup$
Operators
+ \oplus \bigoplus \pm \mp -	$+ \oplus \bigoplus \pm \mp -$
\times \otimes \bigotimes \cdot \circ \bullet \bigodot	$\times \otimes \bigotimes \cdot \circ \bullet \bigodot$
\star * / \div \frac{1}{2}	$\star * / \div \frac{1}{2}$
Logic
\land \wedge \bigwedge \bar{q} \to p	$\land \wedge \bigwedge \bar{q} \to p$
\lor \vee \bigvee \lnot \neg q \And	$\lor \vee \bigvee \lnot \neg q \And$
Root
\sqrt{2} \sqrt[n]{x}	$\sqrt{2} \sqrt[n]{x}$
Relations
\sim \approx \simeq \cong \dot= \overset{\underset{\mathrm{def}}{}}{=}	$\sim \approx \simeq \cong \dot= \overset{\underset{\mathrm{def}}{}}{=}$
Geometric
Arrows
\leftarrow \gets \rightarrow \to \not\to \leftrightarrow \longleftarrow \longrightarrow	$\leftarrow \gets \rightarrow \to \not\to \leftrightarrow \longleftarrow \longrightarrow$
\mapsto \longmapsto \hookrightarrow \hookleftarrow \nearrow \searrow \swarrow \nwarrow	$\mapsto \longmapsto \hookrightarrow \hookleftarrow \nearrow \searrow \swarrow \nwarrow$
\uparrow \downarrow \updownarrow \rightharpoonup \rightharpoondown \leftharpoonup \leftharpoondown \upharpoonleft	$\uparrow \downarrow \updownarrow \rightharpoonup \rightharpoondown \leftharpoonup \leftharpoondown \upharpoonleft$
\upharpoonright \downharpoonleft \downharpoonright \rightleftharpoons \Leftarrow \Rightarrow \Leftrightarrow \Longleftarrow	$\upharpoonright \downharpoonleft \downharpoonright \rightleftharpoons \Leftarrow \Rightarrow \Leftrightarrow \Longleftarrow$
\upharpoonright \downharpoonleft \downharpoonright \rightleftharpoons \Leftarrow \Rightarrow \Leftrightarrow \Longleftarrow	$\upharpoonright \downharpoonleft \downharpoonright \rightleftharpoons \Leftarrow \Rightarrow \Leftrightarrow \Longleftarrow$
\Longrightarrow \Longleftrightarrow (or \iff) \Uparrow \Downarrow \Updownarrow \leftleftarrows \leftrightarrows \Lleftarrow \leftarrowtail \looparrowleft	$\Longrightarrow \Longleftrightarrow (or \iff) \Uparrow \Downarrow \Updownarrow \leftleftarrows \leftrightarrows \Lleftarrow \leftarrowtail \looparrowleft$
\leftrightharpoons \curvearrowleft \circlearrowleft \Lsh \upuparrows \rightrightarrows \rightleftarrows \Rrightarrow \rightarrowtail \looparrowright	$\leftrightharpoons \curvearrowleft \circlearrowleft \Lsh \upuparrows \rightrightarrows \rightleftarrows \Rrightarrow \rightarrowtail \looparrowright$
\curvearrowright \circlearrowright \Rsh \downdownarrows \multimap \leftrightsquigarrow \rightsquigarrow \nLeftarrow \nleftrightarrow \nRightarrow	$\curvearrowright \circlearrowright \Rsh \downdownarrows \multimap \leftrightsquigarrow \rightsquigarrow \nLeftarrow \nleftrightarrow \nRightarrow$
\nLeftrightarrow \longleftrightarrow	$\nLeftrightarrow \longleftrightarrow$
Special
Unsorted

Subscripts, superscripts, integrals

Super/Subscript
a ^ 2
a_2
a^{2+2}	$a ^ {2+2}$
a_{i,j}	$a_{i,j}$
x_23
Preceding and/or Additional
\sideset{_1 ^ 2}{_3 ^ 4}\prod_a ^ b	$\sideset{_1 ^ 2}{_3 ^ 4}\prod_a ^ b$
{}_1 ^ 2\!\Omega_3 ^ 4	${}_1 ^ 2\!\Omega_3 ^ 4$
Stacking
\overset{\alpha}{\omega}	$\overset{\alpha}{\omega}$
\underset{\alpha}{\omega}	$\underset{\alpha}{\omega}$
\overset{\alpha}{\underset{\gamma}{\omega}}	$\overset{\alpha}{\underset{\gamma}{\omega}}$
\stackrel{\alpha}{\omega}	$\stackrel{\alpha}{\omega}$
Derivative
x ^ \prime, y ^ {\prime\prime}	$x ^ \prime, y ^ {\prime\prime}$
x\prime, y\prime\prime, f\prime	$x\prime, y\prime\prime, f\prime$
\dot{x}, \ddot{x}	$\dot{x}, \ddot{x}$
Underlines, Overlines, Vectors
\hat a \ \bar b \ \vec c	$\hat a \ \bar b \ \vec c$
\overrightarrow{a b} \ \overleftarrow{c d} \ \widehat{d e f}	$\overrightarrow{a b} \ \overleftarrow{c d} \ \widehat{d e f}$
\overline{g h i} \ \underline{j k l}	$\overline{g h i} \ \underline{j k l}$
Arrows
A \xleftarrow{n+\mu-1} B \xrightarrow[T]{n\pm i-1} C	$A \xleftarrow{n+\mu-1} B \xrightarrow[T]{n\pm i-1} C$
Over/Underbraces
\overbrace{ 1+2+\cdots+100 }^{5050}	$\overbrace{ 1+2+\cdots+100 }^{5050}$
\underbrace{ a+b+\cdots+z }_{26}	$\underbrace{ a+b+\cdots+z }_{26}$
Sum, Product, Limit
\sum_{k=1}^N k^2	$\sum_{k=1}^N k^2$
\textstyle \sum_{k=1}^N k^2	$\textstyle \sum_{k=1}^N k^2$
\prod_{i=1}^N x_i	$\prod_{i=1}^N x_i$
\textstyle \prod_{i=1}^N x_i	$\textstyle \prod_{i=1}^N x_i$
\coprod_{i=1}^N x_i	$\coprod_{i=1}^N x_i$
\textstyle \coprod_{i=1}^N x_i	$\textstyle \coprod_{i=1}^N x_i$
\lim_{n \to \infty}x_n	$\lim_{n \to \infty}x_n$
\textstyle \lim_{n \to \infty}x_n	$\textstyle \lim_{n \to \infty}x_n$
Integral, Intersections, Unions
\int_{-N} ^ {N} e ^ x\, dx	$\int_{-N} ^ {N} e ^ x\, dx$
\textstyle \int_{-N} ^ {N} e ^ x\, dx	$\textstyle \int_{-N} ^ {N} e ^ x\, dx$
\iint_{D} ^ {W} \, dx\,dy	$\iint_{D} ^ {W} \, dx\,dy$
\iiint_{E} ^ {V} \, dx\,dy\,dz	$\iiint_{E} ^ {V} \, dx\,dy\,dz$
\iiiint_{F} ^ {U} \, dx\,dy\,dz\,dt	$\iiiint_{F} ^ {U} \, dx\,dy\,dz\,dt$
\oint_{C} x ^ 3\, dx + 4y ^ 2\, dy	$\oint_{C} x ^ 3\, dx + 4y ^ 2\, dy$
\bigcap_1 ^ {n} p	$\bigcap_1 ^ {n} p$
\bigcup_1 ^ {k} p	$\bigcup_1 ^ {k} p$

Fractions, Coefficients

Fractions
\frac{2}{4}=0.5	$\frac{2}{4}=0.5$
\tfrac{2}{4} = 0.5	$\tfrac{2}{4} = 0.5$
\dfrac{2}{4} = 0.5	$\dfrac{2}{4} = 0.5$
\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a	$\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a$
Coefficients
\binom{n}{k}	$\binom{n}{k}$
\tbinom{n}{k}	$\tbinom{n}{k}$
\dbinom{n}{k}	$\dbinom{n}{k}$

Parenthesizing big expressions, brackets, bars

Parentheses, Brackets, Braces
\left ( \frac{a}{b} \right )	$\left ( \frac{a}{b} \right )$
\left [ \frac{a}{b} \right ] \quad \left \lbrack \frac{a}{b} \right \rbrack	$\left [ \frac{a}{b} \right ] \quad \left \lbrack \frac{a}{b} \right \rbrack$
\left \{ \frac{a}{b} \right \} \quad \left \lbrace \frac{a}{b} \right \rbrace	$\left \{ \frac{a}{b} \right \} \quad \left \lbrace \frac{a}{b} \right \rbrace$
\left \langle \frac{a}{b} \right \rangle	$\left \langle \frac{a}{b} \right \rangle$
\left \lfloor \frac{a}{b} \right \rfloor \left \lceil \frac{c}{d} \right \rceil	$\left \lfloor \frac{a}{b} \right \rfloor \left \lceil \frac{c}{d} \right \rceil$
\left / \frac{a}{b} \right \backslash	$\left / \frac{a}{b} \right \backslash$
\left \uparrow \frac{a}{b} \right \downarrow \quad \left \Uparrow \frac{a}{b} \right \Downarrow \quad \left \updownarrow \frac{a}{b} \right \Updownarrow	$\left \uparrow \frac{a}{b} \right \downarrow \quad \left \Uparrow \frac{a}{b} \right \Downarrow \quad \left \updownarrow \frac{a}{b} \right \Updownarrow$
Delimiter
\left . \frac{A}{B} \right \} \to X	$\left . \frac{A}{B} \right \} \to X$
\big( \Big( \bigg( \Bigg( ... \Bigg] \bigg] \Big] \big]	$\big( \Big( \bigg( \Bigg( ... \Bigg] \bigg] \Big] \big]$
\big\{ \Big\{ \bigg\{ \Bigg\{ ... \Bigg\rangle \bigg\rangle \Big\rangle \big\rangle	$\big\{ \Big\{ \bigg\{ \Bigg\{ ... \Bigg\rangle \bigg\rangle \Big\rangle \big\rangle$
\big / \Big / \bigg / \Bigg / ... \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash	$\big / \Big / \bigg / \Bigg / ... \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash$

How do I space between equations?

Use the following guide to help you space:

Feature	Code	Result
quad space	a \quad b	$a \quad b$
double quad space	a \qquad b	$a \qquad b$
small negative space	a\!b	$a\!b$

I can’t see the equation image, what’s up?

Make sure your web browser (Internet Explorer, Safari, Firefox, etc.) is upgraded to the most current version. In order to do so, I recommend going to your browsers website:

Microsoft Internet Explorer
Apple – Safari
Mozilla Firefox
Opera

Authority 533

Post Body

Andrew Brown said:

That looks like something I’ll be using right away. Thanks for the cheatsheet

Quote
Posted 8 months ago.

Authority 533

Post Body

Andrew Brown said:

How do you place equations inside of a sqaure root.

eg.

$d = \sqrt{ ((x2 - x1) + (y2 - y1)) }$

Quote
Posted 5 months ago.

Authority 200

Post Body

sunita_negi said:

I have written following syntax in lesson page $Zn^{+2} NH_4OH\rightarrow [Zn(NH_3)_4]^{+2}$ but its not working in the lesson page. The same syntax works very well when m making test. Pls help

Quote
Posted 4 months ago.

Authority 545

Post Body

lechuck said in response to:

: sunita_negi’s post:

Citation Body: I have written following syntax in lesson page $Zn^{+2} NH_4OH\rightarrow [Zn(NH_3)_4]^{+2}$ but its not working in the lesson page. The same syntax works very well when m making test. Pls help

Hi Sunita,

You may be using the Rich Text Editor which does not allow equations.

You must switch from the Rich Text Editor to the Textile Editor and create a new lesson. Your old lessons will not switch. You can switch your editor in your personal Account settings. There is also a lesson on this here.

Quote
Posted 4 months ago.

Authority 209

Post Body

reddy said:

how can i type a matrix of any order?

Quote
Posted 2 months ago.

Authority 545

Post Body

lechuck said:

In order to do a matrix properly, it may take a bit more work as it’s pretty complicated. You have have to combine Tables and Equations… you can learn how to do tables in the Textile Lesson.

Quote
Posted 2 months ago.

Authority 545

Post Body

lechuck said:

Actually, you know what reddy, I was wrong, you can do matrix.

\begin{bmatrix} 0 & \cdots & 0 \\ \vdots & \ddots & \vdots \\ 0 & \cdots & 0 \end{bmatrix}

This can get pretty complicated, so give me a day and I will add them to the lesson.

Quote
Posted 2 months ago.

Authority 153

Post Body

mahesh25 said:

how can i strike a letter

Quote
Posted about 1 month ago.

Authority 515

Post Body

chandra_avinash said:

Hi!

You can strike through by adding ”-” before and after text;

If you type in – [text] -, the output text will be struck through.

To find out more stuff that you can do with text – refer to this lesson!

Quote
Posted about 1 month ago.

Authority 0

Post Body

wingsiu said:

testing $\sqrt{1+\frac{x^2}{y}}=\widehat{ABC}$

Quote
Posted 3 days ago.

Comment On This Lesson

Your comment will be modifiable for 10 minutes after posted.

Your comment is being saved…

Your comment has been posted.

There was a problem saving your comment.

Page Author

Avatar
Name: chandra_avinash

From Here You Can…

Rate Up Down
Email To A Friend

Information

1198 Views
10 Comments
Ratings Likes 5 Negative 0

Most Recent Related Content

Video

Avatar

Title

How to: add images to your comments

Description

Author

Andrew Brown
Video

Avatar

Title

Howto: Einen neuen Kurs einrichten

Description

Author

learnhubtutor
Video

Avatar

Title

Using Images from Flickr and Facebook

Description

How to copy an image location from Flickr or Facebook to use in discussions, ...

Author

chandra_avinash
Lesson

Avatar

Title

Search

Body

Searches can help you find what you want quickly. Here’s a quick guide ...

Author

lucyinthesky
Presentation

Avatar

Title

Creating a Successful Community

Description

This presentation offers a few easy steps that will help you on your way to c...

Author

lechuck
Lesson

Avatar

Title

How to: Notifications

Body

Setting my Notifications:What are notifications?Every time a LearnHub member ...

Author

chandra_avinash
Lesson

Avatar

Title

How to: Rich Text Editor

Body

The Rich Text Editor is a lesson page creation tool that emulates popular Wor...

Author

chandra_avinash
Lesson

Avatar

Title

Content Sharing

Body

Content Sharing Learnhub allows you to share your lessons publicly or priv...

Author

lucyinthesky