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# Quick Guide to Maths Symbols on the computer

This is fantastic, thank you so much. This will make posting in math soo much easier.

Just a suggestion, to make it easier to use could you have a tex button like the code button or the subscript button? This would make it a lot easier than writing it out every time, or clicking on it in the styles list. This is generally because, when I use math here, I explain things while I'm doing it, which means that I have to rewrite the tag every time I use math.

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Degree sign:

^{\circ}

Non-italic letter:

\mathrm{C}

$40^{\circ}\mathrm{C}$

\lim_{x \to +\infty}

$\lim_{x \to +\infty}$

\frac{du}{dt}

$\frac{du}{dt}$

v_{x}

$v_{x}$

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Detexify - This site contains a white drawing area where you can draw a math symbol that you don't know the LaTeX code for. Very helpful.

AoPS LaTeX Guide - A comprehensive guide to using LaTeX. It also shows you how to create good-looking LaTeX documents.

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7. Matrices

You then enter in the terms horizontally, so along the line, using & to indicate the next term e.g.

{1,1} & {1,2} & {1,3}

just to avoid confusion, I suggest the examples to just be

1 & 2 & 3

or

a & b & c

or anything along those lines, as simple as that instead of

{1,1} & {1,2} & {1,3}

because the {} brackets are rather confusing, as I thought we needed to put the brackets (or do we, actually?), although when I read the next example I saw that the brackets aren't necessary.

2. Indices

$x^7$

Achieved by: x^7

could you put in another example here e.g.:

$x^{-7}$

Achieved by: x^{-7}

because I initially thought it would just be x^-7 but then it became $x^-7$ and when I tried x^(-7) it became $x^(-7)$ and it turned out that we need to use {} instead

9. Operators

Trigonometry?

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7. Matrices

You then enter in the terms horizontally, so along the line, using & to indicate the next term e.g.

{1,1} & {1,2} & {1,3}

just to avoid confusion, I suggest the examples to just be

1 & 2 & 3

or

a & b & c

or anything along those lines, as simple as that instead of

{1,1} & {1,2} & {1,3}

because the {} brackets are rather confusing, as I thought we needed to put the brackets (or do we, actually?), although when I read the next example I saw that the brackets aren't necessary.

Added your suggestions/changes. Re: the squiggly brackets, I've also added an explanation in as to why those are necessary for co-ordinates or negative numbers.