
#1
Nov2612, 04:29 PM

P: 224

Hello everyone,
In the past few days, I have learned quite a bit of basic Latex. Thank you all for the tips. Now for the question: do macs automatically come with a latex typesetter (I think that this is the case), and if so, how do I use it? Right now, I'm just going to use this post to copy and paste something into an email I'll delete when I'm done. P.S. Is there a shortcut so I don't have to keep writing tex before and after everything I write? 



#2
Nov2612, 04:39 PM

P: 181

I've never heard of any computer coming aith TeX preinstalled when you buy it, and I just realise that I've been TeXing for nearly 30 years. But you can get a simpletoinstall TeX system called "TeX Live" from TUG (TeX User Group) here: http://www.tug.org/texlive/




#3
Nov2612, 05:44 PM

P: 224





#4
Nov2612, 06:00 PM

P: 181

Typing in Latex on a mac
You can try this small example:
\documentclass{article} \begin{document} What's the difference between $E=mc^2$ and $c=\sqrt{\frac{E}{m}}$? \end{document} and then press the "Typeset" button just underneath your "traffic lights". You'll find lots of information on how to use TeX from TUG (www.tug.org). P.S.: The "documentclass" line is part of this example. I don't know how to get it to stay in that box though. 



#5
Nov2612, 06:10 PM

P: 224





#6
Nov2612, 06:38 PM

P: 181

Your program is switched to "LaTeX" mode (as you can see next to the "Typeset" button). LaTeX provides easier formatting of documents, things like tables of contents, inserting figures etc. than PlainTeX. But LaTeX also demands some framework code, the "documentclass" and a "beginend{document}" pair.
If you just want to typeset a formula, switch to "TeX" a.k.a. "PlainTeX" (next to the "Typeset" button) and try this: Here is a nice equation: $\sqrt{12+\sqrt{12+\sqrt{12+\ldots}}} = 4$. Care to prove this? \bye and click "Typeset". 



#7
Nov2612, 07:25 PM

P: 224





#8
Nov2612, 07:34 PM

P: 224

By the way, I think I figured out a proof to your problem:
[tex]\sqrt{12+\sqrt{12+\sqrt{12+\ldots}}} = x[/tex] [tex]12+\sqrt{12+\sqrt{12+\sqrt{12+\ldots}}}=x^2[/tex] [tex]x^2x12=0[/tex] [tex](x+3)(x4)=0[/tex] [tex]x=4 \space or \space x=3[/tex] Is there another way of going about this that does not accumulate a negative solution? P.S. How do you use the $ instead of [tex]? It didn't work for me. 



#9
Nov2612, 07:44 PM

P: 181

$ (no space here) $ Lots of mathematics $ (no space again) $ Test: $$ Lots of mathematics $$ Okay, let's say that was a list of variables, since they're often put in italics :) Your solution to the squareroot problem is fine, except that x=3 must be excluded (a root f anything , no matter how complicated, can't be negative and real). I don't know of any direct way of solving that equation, but you did the only thing possible: assume there is some solution x and try to find it. 



#10
Nov2612, 08:37 PM

P: 224

Test: $$ \lim_x\to\infty e^(x) e^{\infty} 0 $$ 



#11
Nov2612, 08:57 PM

P: 181

Works perfectly for me:
$$ \lim_x\to\infty e^(x) e^{\infty} 0 $$ You need braces around subscripts and superscripts though, and an = or two:
$$ \lim_{x\to\infty} e^{(x)} = e^{\infty} = 0 $$ Hmmm... I've been using the preview first before submitting these things. Maybe you should try that too. 



#12
Nov2612, 08:59 PM

P: 181

Does this work inline with just one dollar at each end? Like $a+b=c$ this?
No :( 



#13
Nov2612, 09:44 PM

Mentor
P: 11,232

On PF, for inline LaTeX, use two pound signs (#'s) on each end: ##E = mc^2##.
For information about LaTex on PF, see here: http://www.physicsforums.com/showthr...17#post3977517 



#14
Nov2612, 10:08 PM

P: 224

Sorry, but what does inline mean?




#15
Nov2612, 11:12 PM

P: 181

$$ \tan\alpha = \frac{\sin\alpha}{\cos\alpha}. $$ This can be easier to read, bit it needs more space. 



#17
Nov2712, 07:02 AM

P: 224

$$
Testing Inline $$ Awesome, it worked. Thanks for the advice, guys 


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