# Math Help - LaTex Tutorial

1. Originally Posted by Krizalid

Are you gonna install the Cancel Package MG?
What is the cancel package?

2. Originally Posted by ThePerfectHacker
Krizalid do you know how to make a double contour integral?
Nope, I just saw it somewhere and really looks cool

Originally Posted by ThePerfectHacker
This is how CaptainBlank does it,
Code:
\skew{57} {\skew{15}\subset \supset} \iint \mbox{ }
$
\skew{57} {\skew{15}\subset \supset} \iint \mbox{ }
$

The old command was either \ooint or \oiint
But they do not work now.

What command did you use to create your avatar on AoPs?
You can use \mathop{{\int\!\!\!\!\!\int}\mkern-21mu\bigcirc}{}

This yields $\mathop{{\int\!\!\!\!\!\int}\mkern-21mu\bigcirc}{}$

Originally Posted by MathGuru
What is the cancel package?
I mean

3. How can I insert an image in my post?
I used the "Insert image " button, but one ask me to introduce the URL and the image is in my own computer.

4. You can use ImageShack

It's the best way to upload & plug the images to the forum

5. Originally Posted by red_dog
How can I insert an image in my post?
I used the "Insert image " button, but one ask me to introduce the URL and the image is in my own computer.

I've never used Image Shack on this site. I always upload from my computer. Go to "manage attachments", then click on browse at "upload file from your computer". It's always worked great for me.

6. But I don't find "Manage attachments".

7. Really?. That's odd. It's there when I click "post reply". Scroll down to it. That doesn't make sense.

It's right beneath where you write your post. Under "Additional Options", "Attach Files". There's a icon bar that reads "Manage Attachmants".

8. Is it possible to create the command
Code:
\gal
To produce $\mbox{Gal}$.
Code:
\mbox{Gal}
And hence saving time?

I have more such commands which I end up using. So if it possible I can create a list.

9. I think it's possible to set a command like that.

You can also write in text using \text

Not hard.

P.S.: or for some special commands, using \mathrm

10. Is Texnic Center good for writing LaTeX files?

11. Yeah, good software

12. Originally Posted by ThePerfectHacker
Is it possible to create the command
Code:
\gal
To produce $\mbox{Gal}$.
Code:
\mbox{Gal}
And hence saving time?

I have more such commands which I end up using. So if it possible I can create a list.
The standard LaTeX method of creating commands does not work.

Code:
\newcommand{\gal}{\ensuremath{\mbox{Gal}}}
\gal
$\newcommand{\gal}{\ensuremath{\mbox{Gal}}}
\gal$

13. Can someone please give me the code for:

1. 3^(3x +4).18^(-x-2)/24^(x+3).4^(-2x-1)

2. 21^(3x+1).7(2-x)/49^(x-1).27^(x-4)

14. Originally Posted by Dean
Can someone please give me the code for:

1. 3^(3x +4).18^(-x-2)/24^(x+3).4^(-2x-1)

2. 21^(3x+1).7(2-x)/49^(x-1).27^(x-4)

3^(3x +4).18^(-x-2)/24^(x+3).4^(-2x-1)

$\frac{3^{3x +4}.18^{-x-2}}{24^{x+3}.4^{-2x-1}}$

which is generated by:

$$\frac{3^{3x +4}.18^{-x-2}}{24^{x+3}.4^{-2x-1}}$$

21^(3x+1).7(2-x)/49^(x-1).27^(x-4)

$\frac{21^{3x+1}.7^{2-x}}{49^{x-1}.27^{x-4}}$

which is generated by:

$$\frac{21^{3x+1}.7^{2-x}}{49^{x-1}.27^{x-4}}$$

RonL

15. Thanks a million.

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