Answer by Gabriel Staples for MathJax basic tutorial and quick reference
How to draw a stretched vertical bar to indicate the bounds (upper and lower limits) after taking the anti-derivative of a definite integralI'd like to also expound upon bullet 6 in the question, about...
View ArticleAnswer by Antoni Parellada for MathJax basic tutorial and quick reference
Evaluated at (integrals):To get a vertical bar to the right of an expression with the limits of integration, expressions such as $\Big |$$\Big |$ result in one-size-fits-all outputs.\left....
View ArticleAnswer by user803596 for MathJax basic tutorial and quick reference
Overlaying symbols(using negative spacing)To overlay the $\wedge$\wedge and the $\bigcirc$\bigcirc, to make the Kulkarni Nomizu Product:$$\mathbin{\rlap{\,\wedge}\bigcirc}$$Which is...
View ArticleAnswer by Dávid Laczkó for MathJax basic tutorial and quick reference
Is there a way to make the Greek letters displayed upright (non-italic)?Asked in comment. There is a way using unicode characters, for which one can search here: http://unicode-table.com/en. Normal use...
View ArticleAnswer by Jam for MathJax basic tutorial and quick reference
Markov ChainsThis is a heuristic solution for coding Markov chains in Mathjax using a combination of commutative diagrams, the encircle tool and font sizes. There are a few minor issues with this...
View ArticleAnswer by Antoni Parellada for MathJax basic tutorial and quick reference
Tensor indicesT^{\alpha\beta}{}_{\gamma\delta}$T^{\alpha\beta}{}_{\gamma\delta}$T^{\alpha \beta}{}_{\gamma\delta}{}^{\lambda}$T^{\alpha \beta}{}_{\gamma\delta}{}^{\lambda}$So for instance, a...
View ArticleAnswer by Landon for MathJax basic tutorial and quick reference
TablesW/ Sub-VariablesAfter spending too much time searching for a way to make tables of this form (to no avail), I spent even longer searching for the pieces (of which most were found here) to...
View ArticleAnswer by Mr Pie for MathJax basic tutorial and quick reference
Alternative Ways of Writing in $\Large\LaTeX$TYPESET FONTSAs mentioned before, you can write $\mathtt{. . .}$ to generate fonts like $\mathtt{A}$, $\mathtt{B}$, $\mathtt{C}$ and etc.You can also...
View ArticleAnswer by jdhao for MathJax basic tutorial and quick reference
Equation numberingSimple equationTo give an equation a number, use the \tag{}. To refer to it later, use \label{} to label this equation. When you want to refer to it, use \eqref{}. For...
View ArticleAnswer by GNUSupporter 8964民主女神地下教會 for MathJax basic tutorial and quick...
Linear programmingFormulationA theoretical LPP can be typeset as\begin{array}{ll}\text{maximize} & c^T x \\\text{subject to}& d^T x = \alpha \\&0 \le x \le...
View ArticleAnswer by gen-ℤ ready to perish for MathJax basic tutorial and quick reference
UnitsWhile $\LaTeX$ has packages that format units, MathJax does not. For visual consistency, one should format units within the same string of MathJax code as the value to which it corresponds,...
View ArticleAnswer by hardmath for MathJax basic tutorial and quick reference
Mixing code and MathJax formatting on linesTo give an example of how this might be useful, I wanted to express an algorithm in more or less the same indentation and symbolic way it appears in a...
View ArticleAnswer by Alexis Olson for MathJax basic tutorial and quick reference
Displaystyle and TextstyleMany things like fractions, sums, limits, and integrals display differently when written inline versus in a displayed formula. You can switch styles back and forth with...
View ArticleAnswer by Workaholic for MathJax basic tutorial and quick reference
Vertical SpacingSome formulas such as $\overline a+\overline b=\overline {a\cdot b}$, $\sqrt{a}-\sqrt{b}$, do not look quite right when it comes to vertical spacing. Fortunately, there is more than one...
View ArticleAnswer by David for MathJax basic tutorial and quick reference
Pack of cardsIf you are asking (or answering) a combinatorics question involving packs of cards you can make it look more elegant by using \spadesuit, \heartsuit, \diamondsuit, \clubsuit in math...
View ArticleAnswer by webbertiger for MathJax basic tutorial and quick reference
Highlighting equationTo highlight an equation, \bbox can be used. E.g,$$ \bbox[yellow]{e^x=\lim_{n\to\infty} \left( 1+\frac{x}{n} \right)^n\qquad (1)}$$produces$$ \bbox[yellow]{e^x=\lim_{n\to\infty}...
View ArticleAnswer by David K for MathJax basic tutorial and quick reference
Giving reasons on each line of a sequence of equationsTo produce this:\begin{align} v + w & = 0 &&\text{Given} \tag 1\\ -w & = -w + 0 && \text{additive identity} \tag 2\\ -w + 0...
View ArticleAnswer by David K for MathJax basic tutorial and quick reference
Long division$$\require{enclose}\begin{array}{r} 13 \\[-3pt]4 \enclose{longdiv}{52} \\[-3pt] \underline{4}\phantom{2} \\[-3pt] 12 \\[-3pt] \underline{12}\end{array}$$$$\require{enclose}\begin{array}{r}...
View ArticleAnswer by MvG for MathJax basic tutorial and quick reference
Degree symbolStandard Mathjax does not yet support a dedicated degree symbol, so here are some of the ways to try and emulate one :$$\begin{array} \\\text{45^\text{o}} & \text{renders as} &...
View ArticleAnswer by Lehs for MathJax basic tutorial and quick reference
Commutative diagrams(For more examples, see this meta question.)AMScd diagrams must start with a "require":$\require{AMScd}$\begin{CD}A @>a>> B\\@V b V V= @VV c V\\C @>>d> D\end{CD}to...
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Answer by MvG for MathJax basic tutorial and quick reference
Absolute values and normsThe absolute value of some expression can be denoted as \lvert x\rvert or, more generally, as \left\lvert … \right\rvert. It renders as $\lvert x\rvert$.The norm of a vector...
View ArticleAnswer by MvG for MathJax basic tutorial and quick reference
Arbitrary operatorsIf an operator is not available as a built-in command, use \operatorname{…}. So for things like $$\operatorname{arsinh}(x)$$ write \operatorname{arsinh}(x) since \arsinh(x) will give...
View ArticleAnswer by homegrown for MathJax basic tutorial and quick reference
Left and Right Implication ArrowsAnother way to display the arrows for right and left implication instead of using$\Rightarrow$, $\Leftarrow$ and $\Leftrightarrow$which produces $\Rightarrow$,...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
Crossing things outUse \require{cancel} in the first formula in your post that requires cancelling; you need it only once per page. Then use:$$\require{cancel}\begin{array}{rl}\verb|y+\cancel{x}| &...
View ArticleAnswer by Américo Tavares for MathJax basic tutorial and quick reference
Additional decorations$\def\demo#1#2{#1{#2}\ #1{#2#2}\ #1{#2#2#2}}$\overline: $\demo\overline A$\underline: $\demo\underline B$\widetilde: $\demo\widetilde C$\widehat: $\demo\widehat D$\fbox:...
View ArticleAnswer by Anonymous Computer for MathJax basic tutorial and quick reference
LimitsTo make a limit (like $\lim \limits_{x \to 1} \frac{x^2-1}{x-1}$), use this syntax:First, start off with $\lim. This renders as $\lim$. The backslash is there to prevent things like $lim$, where...
View ArticleAnswer by Abramo for MathJax basic tutorial and quick reference
Using \newcommandI would like to remark that it is possible to define LaTeX commands as you do in your TeX files. I felt so happy when I first discovered it! It's enough to insert something like$...
View ArticleAnswer by Tobias Kienzler for MathJax basic tutorial and quick reference
Tags & ReferencesFor longer calculations (or referring to other post's results) it is convenient to use the tagging/labelling/referencing system. To tag an equation use \tag{yourtag}, and if you...
View ArticleAnswer by E.P. for MathJax basic tutorial and quick reference
Big bracesUse \left and \right to make braces - (round), [square] and {curly} - scale up to be the size of their arguments. Thus$$f\left( \left[ \frac{ 1+\left\{x,y\right\} }{ \left(...
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Answer by user93957 for MathJax basic tutorial and quick reference
SymbolsIn 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...
View ArticleAnswer by Vlad K. for MathJax basic tutorial and quick reference
ColorsNamed colors are browser-dependent; if a browser doesn't know a particular color name, it may render the text as black. The following colors are standard in HTML4 and CSS2 and should be...
View ArticleAnswer by leonbloy for MathJax basic tutorial and quick reference
\implies ($\implies$) is a marginally preferable alternative to \Rightarrow ($\Rightarrow$) for implication.There's also \iff $\iff$ and \impliedby $\impliedby$.\to ($\to$) is preferable to \rightarrow...
View ArticleAnswer by Américo Tavares for MathJax basic tutorial and quick reference
System of equationsUse \begin{array}…\end{array} and \left\{…\right.. For example, you get this:$$\left\{ \begin{array}{c}a_1x+b_1y+c_1z=d_1 \\ a_2x+b_2y+c_2z=d_2 \\...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
Continued fractionsTo make a continued fraction, use \cfrac, which works just like \frac but typesets the results differently: $$ x = a_0 + \cfrac{1^2}{a_1+ \cfrac{2^2}{a_2+ \cfrac{3^2}{a_3 +...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
Fussy spacing issuesThese 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...
View ArticleAnswer by axblount for MathJax basic tutorial and quick reference
ArraysIt 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...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
Definitions by cases (piecewise functions)Warning: If you make certain kinds of errors while entering code using this environment, you can easily screw-up live update, and your only recourse is to...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
Aligned equationsOften 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...
View ArticleAnswer by MJD for MathJax basic tutorial and quick reference
MatricesUse $$\begin{matrix}…\end{matrix}$$ In between the \begin and \end, put the matrix elements. End each matrix row with \\, and separate matrix elements with &. For example,$$\begin{matrix}1...
View ArticleMathJax basic tutorial and quick reference
(Deutsch: MathJax: LaTeX Basic Tutorial und Referenz)To see how any formula was written in any question or answer, including this one, right-click on the expression and choose "Show Math As > TeX...
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