Wednesday, April 1, 2020, 11:32 AM
Site: Trinity Moodle
Course: Trinity Moodle (Home)
Glossary: Math Notation Help
S

s.u.m

$$\sum_{n+2}^x$$  is  \sum_{n+2}^x

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)}}

square bracket

  • Synatx: \left[...\right]
  • Ex.: $$\left[a,b\right]$$ gives \left[a,b\right]

square root

@@@sqrt{x}@@@  is @@sqrt(x)@@

subscript

underscore $$x_2$$  is   x_2

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}}

superscript

$$x^2$$ or $$x^3$$ is x^2 or x^3