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| − | '''LaTeX''' is a typesetting language used primarily to type mathematical expressions in an elegant fashion. For example, without LaTeX, <math>\frac{35}{137}</math> would have to be written as 35/137. To use LaTeX in the forums, enclose your LaTeX code with dollar signs: <nowiki>$your codes here$</nowiki>. To use LaTeX on AoPSWiki, enclose your code with math tags instead of dollar signs, like so: <nowiki><math>your codes here</math></nowiki>
| + | {{Latex}} |
| | + | The <math>\LaTeX</math> typesetting system (pronounced "Lay-Tek" by most, or "Lah-Tek" by some) is widely used to produce well-formatted [[math|mathematical]] and scientific writing. With <math>\LaTeX</math>, it is very easy to produce expressions like |
| | + | <cmath> |
| | + | \sqrt{\frac {a^2+b^2+c^2}3} \geq \frac {a+b+c}3 \geq \sqrt[3]{abc} \geq \frac 3 { \frac 1a + \frac 1b + \frac 1c } . |
| | + | </cmath> Nearly every serious student of math and science will use <math>\LaTeX</math> frequently. Through these web pages, you will learn much of what you'll need to express math and science like a pro. |
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| − | CHANGE: Dollar signs can now be used to use LaTeX.
| + | * [http://www.artofproblemsolving.com/wiki/index.php/LaTeX:LaTeX_on_AoPS Click here] to start learning how to use <math>\LaTeX</math> on AoPS! |
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| − | ==Useful Codes==
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| − | '''\boxed{Answer}''' produces a box around your Answer. Cannot be used in Wiki
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| − | '''\frac{a}{b}''' produces a [[fraction]] with [[numerator]] <math>a</math> and [[denominator]] <math>b</math>. <math>\frac{a}{b}</math>
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| − | '''^\circ''' produces the degrees symbol. <math>a^{\circ}</math>
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| − | '''\text{Your Text Here}''' produces text within LaTeX. <math>\mbox{Your Text Here}</math>. Cannot be used in the Wiki.
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| − | '''\mbox{Your Text Here}''' Produces text within LaTeX; can be used in the Wiki. <math>\mbox{Your Text Here}</math>
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| − | '''\sqrt{x}''' produces the square root of <math>x</math>. <math>\sqrt{x}</math>
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| − | '''\sqrt[n]{x}''' produces the <math>n</math>th root of <math>x</math>. <math>\sqrt[n]{x}</math>
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| − | '''a\equiv b \pmod{c}''' produces <math>a</math> is equivalent to <math>b</math> mod <math>c</math>. <math>a\equiv b \pmod{c}</math> See [[Mods |Modular Arithmetic]]
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| − | '''\binom{9}{3}''' produces 9 choose 3. Cannot be used in Wiki.
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| − | '''{n}\choose{r}''' produces n choose r. <math>{n}\choose{r}</math>
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| − | '''x^{y}''' produces x to the power of y. <math>x^y</math>
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| − | '''x_{y}''' produces x with y in subscript. <math>x_y</math>
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| − | '''\rightarrow''' produces an arrow to the right. <math>\rightarrow</math>
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| − | '''\leftarrow''' produces an arrow to the left. <math>\leftarrow</math>
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| − | '''\uparrow''' produces an arrow pointing upwards. <math>\uparrow</math>
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| − | '''\downarrow''' produces an arrow pointing downwards. <math>\downarrow</math>
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| − | '''\updownarrow''' produces an arrow pointing up and down. <math>\updownarrow</math>
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| − | '''\ge''' produces a greater than or equal to sign. <math>\ge</math>
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| − | '''\le''' produces a less than or equal to sign. <math>\le</math>
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| − | '''\not>''' produces a not greater than sign. <math>\not></math>
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| − | '''\not<''' produces a not less than sign. <math>\not<</math>
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| − | '''\not\ge''' produces a not greater than or equal to sign. <math>\not\ge</math>
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| − | '''\not\le''' produces a not less than or equal to sign. <math>\not\le</math>
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| − | '''\neq''' produces a not equal to sign. <math>\neq</math>
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| − | '''\infty''' produces an infinity sign. <math>\infty</math>
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| − | '''\perp''' produces a perpendicular sign. <math>\perp</math>
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| − | '''\angle''' produces an angle sign. <math>\angle</math>
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| − | '''\triangle''' produces a triangle. <math>\triangle</math>
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| − | '''\ldots''' produces three dots at the bottom of a line (ellipsis). <math>\ldots</math>
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| − | '''\cdots''' produces three dots in the middle of a line (as in a series sum or product). <math>\cdots</math>
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| − | '''\times''' produces an <math>\times</math> as used in multiplication
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| − | '''\otimes''' produces a <math>\otimes</math>
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| − | Note that on AoPSWiki, many codes that work on the AoPS forums do not work. Also, a helpful tip is that if LaTeX fails to render within AoPSWiki, try adding the code \displaystyle to the beginning of the string of LaTeX. This often fixes minor rendering problems.
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| − | Also note that you do not have to use braces, "{" and "}", when you only want one character in the operation.
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| − | ===Examples===
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| − | * x^y is the same as x^{y}. <math>x^y</math>
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| − | * x_y is the same as x_{y}. <math>x_y</math>
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| − | * BUT x^10 is ''not'' the same as x^{10}. <math>x^10</math> instead of <math>x^{10}</math>.
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| − | ==Fonts==
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| − | === Font families ===
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| − | * Roman (default): \textrm{...}
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| − | * Sans-serif: \textsf{...}
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| − | * Monospace (typewriter): \texttt{...}
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| − | === Font sizes ===
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| − | To activate a font size, write '{\tiny{This text is tiny}}', for example.
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| − | * \tiny (5 pt.)
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| − | * \scriptsize (7 pt.)
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| − | * \footnotesize (8 pt.)
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| − | * \small (9 pt.)
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| − | * \normalsize (10 pt.)
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| − | * \large (12 pt.)
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| − | * \Large (14 pt.)
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| − | * \LARGE (18 pt.)
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| − | * \huge (20 pt.)
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| − | * \Huge (24 pt.)
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| − | === Font styles ===
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| − | * Bold \textbf{...}
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| − | * Italics \textit{...}
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| − | * Slanted \textsl{...}
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| − | * Small capitals \textsc{...}
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| − | * Sans-serif \textsf{...}
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| − | * Monospace \texttt{...}
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| − | * Emphasis \emph{...}
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| − | ==Tutorials & Tools ==
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| − | * [http://www.artofproblemsolving.com/LaTeX/AoPS_L_About.php AoPS LaTeX Guide]
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| − | *[http://www.artofproblemsolving.com/LaTeX/AoPS_L_HelpIndex.php AoPS LaTeX Help Index]
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| − | *[http://en.wikipedia.org/wiki/LaTeX Wikipedia Article]
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| − | *[http://sciencesoft.at/index.jsp?link=latex&lang=en&wiki=1 This] is a useful site that will change LaTeX input into a PNG image.
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| − | {{tutorial}}
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typesetting system (pronounced "Lay-Tek" by most, or "Lah-Tek" by some) is widely used to produce well-formatted mathematical and scientific writing. With ![\[\sqrt{\frac {a^2+b^2+c^2}3} \geq \frac {a+b+c}3 \geq \sqrt[3]{abc} \geq \frac 3 { \frac 1a + \frac 1b + \frac 1c } .\]](http://latex.artofproblemsolving.com/6/e/a/6ea4f5c58e2ba74f22f7e3edaaa895f2e4ea0402.png)
Nearly every serious student of math and science will use 
on AoPS!
