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**hermione_brains****Member**- Registered: 2010-05-18
- Posts: 6

Hello, I was googling vector formulas for my precal final exam tomorrow, because I lost the sheet our teacher gave us, and found this site. I'm amazed, I had no idea there was a forum just for math!

I'm a junior in high school (soon to be a senior O.o). This forum looks to be very useful in the coming months, since I will be in AP Calculus BC next year. I hope to get to know this site fully, and lots of people on it too =B

Incidentally, what are the [math] tags for? I mean, what do they do? =P

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**ZHero****Real Member**- Registered: 2008-06-08
- Posts: 1,889

Hi hermione_brains!

the [math tag helps you use LaTeX to format your equations for better display.

e.g.

`[math]x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}[/math]`

will produce...

#WELCOME TO THE FORUM#

*Last edited by ZHero (2010-05-18 18:10:57)*

If two or more thoughts intersect with each other, then there has to be a point.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,681

Hi hermione_brains;

Welcome to the forum!

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**soha****Real Member**- Registered: 2006-07-07
- Posts: 2,530

Hello hermione_brains,

Welcome to Maths is fun Forum!!!

Hope you enjoy posting here!!

"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"

- David O. McKay

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,552

Hi Hermione! Welcome.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**iLink-9000****Member**- Registered: 2010-05-27
- Posts: 1

Hello!!!

Mathematics is the science which uses easy words for hard ideas....

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,681

Hi iLink-9000;

I thought it was the other way around. Welcome to the forum.

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**quittyqat****Member**- Registered: 2009-04-08
- Posts: 1,213

Hi iLink-9000 and hermione_brains!

I'll be here at least once every month. XP

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**hermione_brains****Member**- Registered: 2010-05-18
- Posts: 6

Thanks ZHero! So, the forward slashes separate the different... terms, for lack of a better word, and the {} brackets group them? frac is fractions... anything else? What if you wanted to use a subnumeral?

And I think it works either way, sometimes it's hard words for easy ideas but others it's easy words for hard ideas =DDD

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,681

Hi hermione_brains;

**In mathematics, you don't understand things. You just get used to them.**

**I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.**

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,681

Hi hermione_brains;

Use shift key and then minus key, and wrap what you want subscripted in {}. So it is A_{23} would get.

You can just right click on anybody's latex to see the code that produced it.

**In mathematics, you don't understand things. You just get used to them.**

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**ZHero****Real Member**- Registered: 2008-06-08
- Posts: 1,889

Yes! The forward slashes "" can either be used to separate "terms", to introduce "single space" or to use "special symbols".

Like...

`[math]This \ is \ text.[/math]`

`[math]\text{Its better to use "text" preceded by a slash!}[/math]`

`[math]ten \ \ \ \ \ \ \ \ \ \ \ spaces[/math]`

`[math]\pm \ \mp \ \sum \ \rightarrow \ \Uparrow \ \star[/math]`

Here's a Brief Tutorial on LaTeX at http://www.mathisfunforum.com/viewtopic.php?id=4397

Here's a List of some Symbols: LaTeX-Symbols

If two or more thoughts intersect with each other, then there has to be a point.

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