## Math Notation Help

This glossary will help you build complex mathematical equations using the Tex markup language. This will involve using @@ or $$before and after the expression to display the desired results. Browse the glossary using this index Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL ### S #### s.u.m$$\sum_{n+2}^x$$is $\sum_{n+2}^x$  Keyword(s): sum #### sigma (lower case greek letter)$$\sigma$$gives $\sigma$ #### Sigma (upper case greek letter)$$\Sigma$$gives $\Sigma$ #### smiley$$~\unitlength{.6}~\picture(100){~~(50,50){\circle(99)}~ ~(20,55;50,0;2){+1$\hat\bullet}~~(50,40){\bullet}~~(50,35){\circle(50,25;34)}~ ~(50,35){\circle(50,45;34)}}$$is $~\unitlength{.6}~\picture(100){~~(50,50){\circle(99)}~ ~(20,55;50,0;2){+1\hat\bullet}~~(50,40){\bullet}~~(50,35){\circle(50,25;34)}~ ~(50,35){\circle(50,45;34)}}$  Keyword(s): smiley #### square bracket • Synatx: \left[...\right] • Ex.:$$\left[a,b\right]$$gives $\left[a,b\right]$ #### square root @@@sqrt{x}@@@ is @@sqrt(x)@@  Keyword(s): sqr rt #### subscript underscore$$x_2$$is $x_2$  Keyword(s): subscript_ #### sum (summation) • General syntax for symbols with a kind of lower and upper limits: \symbolname_{lowerexpression}^{upperexpression} • In general, there are two ways how these lower and upper expressions can be placed: centered below and above the symbol or in a subscript / superscript manner. In the first case the symbol name is preceded by the word "big", in the second there is no prefix. • Syntax for summation symbol:$$\bigsum_{i=k}^{n}$$gives $\bigsum_{i=k}^{n}$ and$$\sum_{i=k}^{n}$$gives $\sum_{i=k}^{n}$ • Use font size commands for a nicer picture:$$\LARGE\bigsum_{\small{i=1}}^{\small{n}}$$gives $\LARGE\bigsum_{\small{i=1}}^{\small{n}}$ and$$\large\sum_{\small{i=1}}^{\small{n}}$$gives $\large\sum_{\small{i=1}}^{\small{n}}$  Keyword(s): big sum #### superscript$$x^2$$or$$x^3$\$ is $x^2$ or $x^3$
 Keyword(s): superscript^