LaTeX Introducing LaTeX Math Typesetting

pervect · Jun 11, 2006

\] \\begin{picture}(750,450)(0,0) \footnotesize \qb(205,166)(246,166) \qb(626,166)(585,166) \put(164,166){\makebox(0,0)[r]{ 0}} \qb(205,206)(246,206) \qb(626,206)(585,206) \put(164,206){\makebox(0,0)[r]{ 1}} \qb(205,247)(246,247) \qb(626,247)(585,247) \put(164,247){\makebox(0,0)[r]{ 2}} \qb(205,287)(246,287) \qb(626,287)(585,287) \put(164,287){\makebox(0,0)[r]{ 3}} \qb(205,328)(246,328) \qb(626,328)(585,328) \put(164,328){\makebox(0,0)[r]{ 4}} \qb(205,368)(246,368) \qb(626,368)(585,368) \put(164,368){\makebox(0,0)[r]{ 5}} \qb(205,166)(205,207) \qb(205,368)(205,327) \put(205,83){\makebox(0,0){ 0}} \qb(289,166)(289,207) \qb(289,368)(289,327) \put(289,83){\makebox(0,0){ 1}} \qb(373,166)(373,207) \qb(373,368)(373,327) \put(373,83){\makebox(0,0){ 2}} \qb(458,166)(458,207) \qb(458,368)(458,327) \put(458,83){\makebox(0,0){ 3}} \qb(542,166)(542,207) \qb(542,368)(542,327) \put(542,83){\makebox(0,0){ 4}} \qb(626,166)(626,207) \qb(626,368)(626,327) \put(626,83){\makebox(0,0){ 5}} \qb(205,166)(626,166)(626,368)(205,368)(205,166) \put(-1178,286){\makebox(0,0)[r]{sqrt(x*x-1)}} \thinlines \path(4294966159,286)(4294966364,286) \thinlines \path(293,178)(293,178)(310,196)(328,209)(345,220)(363,230)(380,240)(398,249)(416,259)(433,268)(451,277)(468,286)(486,294)(503,303)(521,312)(538,321)(556,329)(573,338)(591,347)(608,355)(626,364) \put(-440,286){\makebox(0,0)[r]{.866*x}} \qb(4294966897,286)(4294967102,286) \qb(205,166)(205,166)(223,173)(240,181)(258,188)(275,195)(293,202)(310,210)(328,217)(345,224)(363,232)(380,239)(398,246)(416,253)(433,261)(451,268)(468,275)(486,283)(503,290)(521,297)(538,304)(556,312)(573,319)(591,326)(608,334)(626,341) \put(298,286){\makebox(0,0)[r]{.866}} \qb(339,286)(544,286) \qb(205,201)(205,201)(223,201)(240,201)(258,201)(275,201)(293,201)(310,201)(328,201)(345,201)(363,201)(380,201)(398,201)(416,201)(433,201)(451,201)(468,201)(486,201)(503,201)(521,201)(538,201)(556,201)(573,201)(591,201)(608,201)(626,201) \qb(205,166)(626,166)(626,368)(205,368)(205,166) \end{picture} \[

MemoryOfUs · Jun 11, 2006

Could someone please help me draw a digraph of 5 nodes with weights and loops included ? I just couldn't find out any articles out there in ctan that could help me accomplish this.

a_rajesh_mit · Jun 13, 2006

latex help

friends, i have an equation which is to be typeset in latex. will anyone of you be kind enough to let me know how to do it in latex.
the equation is x=A.y where x and y are 3x1 vectors each (i.e. a column vector with 3 rows), A is a 3x3 square matrix (i.e., 3 rows and 3 columns). Can anyone help me

matt grime · Jun 13, 2006

A quick google search on typesetting matrices in latex will show you how to do it for any matrices. Go on, give it a go.

Hootenanny · Jun 14, 2006

GSampson said:

Let me try
\alpha^\gamma[\tex]

Change your last tag to (without the spaces); [ /tex ]

matt grime · Jun 25, 2006

\stackrel{\to}{\to}

\leftleftarrows

buddyholly9999 · Jun 26, 2006

How do I get daggers for foonotes?

I have no idea how to make the dagger appear for the footnote..I've been looking online and all I come across are sites that say nothing how to do this. Any help would be appreciated.

Doc Al · Jun 27, 2006

buddyholly9999 said:

I have no idea how to make the dagger appear for the footnote

footnote^\dagger

^\daggerDo you mean like this?

buddyholly9999 · Jun 27, 2006

figured it out...

I guess that's one way to do it...but I would rather not cheat and just let Latex automatically format my text...instead what I did was download the footmisc package and then use the 'symbol*' argument and when i typed \footnote...i had to do \footnote[2] since 1 = * and 2 = \dagger...

mathzeroh · Jul 8, 2006

test:

(-\frac{1}{2}\ln{\sin{x}}+C)

x^2\sqrt{x}

NOTE:

the crash course has a major typo (if I'm not mistaken)

look at the 2 things I've encircled

buddyholly9999 · Jul 14, 2006

Does anyone know the fancy cursive way to denote a powerset.

I'm not talking about \mathcal{P} = \{A_j : j \in J \}

Triss · Jul 15, 2006

buddyholly9999 said:

Does anyone know the fancy cursive way to denote a powerset.

I'm not talking about \mathcal{P} = \{A_j : j \in J \}

There is \mathfrak{P}. if that is not it i think you will need another font package like fourier, and i do not think the forum supports those (does it?)

See page 6 in http://www.tex.ac.uk/tex-archive/fonts/fourier-GUT/doc/latex/fourier/fourier-doc-en.pdf to see how the fouier--calligraphic P looks like

MathematicalPhysicist · Jul 17, 2006

i have a question regarding tex, before tex was invented, how did scientists published equations through the internet?

rpenner · Jul 18, 2006

I am under the impression that typesetting software, like troff, predated both TeX and the internet. A quick survey of Google supports this clearly.

TeX was born in 1982, which was in the infancy of "The Internet" http://www.tug.org/ftp/historic/systems/unix/TeX2.9/tex82/TeXdoc/history.txt

For the early days of UNIX: The AT&T Man pages are typeset in nroff for terminals and troff for publishing. An additional utility, eqn, was a nroff preprocessor specific for equations. These have been around since the early 1970s.

http://ezine.daemonnews.org/199903/history.html

Prior to UNIX, in the 1960s, was CTSS which had RUNOFF which was an ancestor of VAX/VMS RUNOFF and UNIX troff, and GNU gtroff
http://mit.edu/Saltzer/www/publications/AH.9.01.html
http://www.multicians.org/thvv/7094.html

Prior to RUNOFF, there may have been a variety of custom (proprietrary) typesetting solutions used by published in the 1960's.

buddyholly9999 · Jul 29, 2006

For the powerset fancy lettering I used calligra..found on this website
http://www.tug.dk/FontCatalogue/"

as for ultima9999...it might be just me...but did you mean to use 5^{10}
??

Zeit · Aug 8, 2006

Excuse me, I just want to try it a bit.

t=\frac{t_0}{\sqrt{1-\frac{v^2}{c^2}}}

Pakistani_Shikra · Aug 27, 2006

can anyone tell me how to use binomial in laTeX bcoz when i use \binom it doesn't comes up with anything except = mn
can anyone explain this to me ??

Triss · Aug 29, 2006

Pakistani_Shikra said:

can anyone tell me how to use binomial in laTeX bcoz when i use \binom it doesn't comes up with anything except = mn
can anyone explain this to me ??

\binom{}{} requires the amsmath package.

VietDao29 · Aug 29, 2006

Pakistani_Shikra said:

can anyone tell me how to use binomial in laTeX bcoz when i use \binom it doesn't comes up with anything except = mn
can anyone explain this to me ??

You mean this:
\left( \begin{array}{c} n \\ k \end{array} \right)?

VietDao29 · Aug 29, 2006

Testing:
 \setlength{\unitlength}{6cm} \begin{picture}(1, 1) \put(0, 0){\line(0, 1){1}} \put(0, 0){\line(1, 0){1}} \put(0, 0){\line(1, 1){1}} \put(0, 0){\line(1, 2){.5}} \put(0, 0){\line(1, 3){.33333}} \put(0, 0){\line(1, 4){.25}} \put(0, 0){\line(1, 5){.2}} \put(0, 0){\line(1, 6){.16667}} \put(0, 0){\line(2, 1){1}} \put(0, 0){\line(2, 3){.6667}} \put(0, 0){\line(2, 5){.4}} \put(0, 0){\line(3, 1){1}} \put(0, 0){\line(3, 2){1}} \put(0, 0){\line(3, 4){.75}} \put(0, 0){\line(3, 5){.6}} \put(0, 0){\line(4, 1){1}} \put(0, 0){\line(4, 3){1}} \put(0, 0){\line(4, 5){.8}} \put(0, 0){\line(5, 1){1}} \put(0, 0){\line(5, 2){1}} \put(0, 0){\line(5, 3){1}} \put(0, 0){\line(5, 4){1}} \put(0, 0){\line(5, 6){.8333}} \put(0, 0){\line(6, 1){1}} \put(0, 0){\line(6, 5){1}} \end{picture}
 \definecolor{hellgrau}{gray}{.8} \definecolor{dunkelblau}{rgb}{0, 0, .7} \definecolor{roetlich}{rgb}{1, .7, .7} \definecolor{dunkelmagenta}{rgb}{.3, 0, .3} \setlength{\unitlength}{1cm} \begin{picture}(6, 8) \linethickness{0.075mm} \multiput(0, 0)(6, 0){2}{\line(0, 1){8}} \multiput(0, 0)(0, 8){2}{\line(1, 0){6}} \thicklines \color{dunkelmagenta} \put(1, .5){\line(2, 1){3}} \put(4, 2){\line(-2, 1){2}} \put(2, 3){\line(-2, -5){1}} \put(.7, .3){\makebox(0,0)[cc]{B}} \put(4.05, 1.9){\makebox(0,0)[cc]{B}} \put(1.7, 2.95){\makebox(0,0)[cc]{C}} \put(3.1, 2.5){\makebox(0,0)[cc]{a}} \put(1.3, 1.7){\makebox(0,0)[cc]{b}} \put(2.5, 1.05){\makebox(0,0)[cc]{c}} \color{dunkelblau} \put(0.3, 4){\makebox(0,0)[cc]{F=\sqrt{s(s-a)(s-b)(s-c)}}} \end{picture} 
 \definecolor{cred}{rgb}{1, 0, 0} \definecolor{cgreen}{rgb}{0, 1, 0} \definecolor{cblue}{rgb}{0, 0, 1} \setlength{\unitlength}{1mm} \begin{picture}{60, 60} \put(30, 30){\circle{14}} \put(23, 23){\line(1, 0){14}} \put(23, 23){\line(0, 1){14}} \put(37, 37){\line(0, -1){14}} \put(37, 37){\line(-1, 0){14}} \color{cred} \put(30, 23){\line(0, 1){14}} \put(23, 30){\line(1, 0){14}} \end{picture} 
This is driving me crazy... :cry:

Does anyone know why there's a text 0, 60 in the third picture? I didn't put any text there, it just appeared mysteriously...

The circle command is too small, since the diameter can only be 14 mm. I just wonder if there is a way to magnify the picture? Or to draw a larger circle?

J77 · Aug 30, 2006

VietDao29 said:

This is driving me crazy... Does anyone know why there's a text 0, 60 in the third picture? I didn't put any text there, it just appeared mysteriously...

Your \begin{picture} command has curly brackets after it {60,60} instead of round (60,60)

VietDao29 · Sep 2, 2006

J77 said:

Your \begin{picture} command has curly brackets after it {60,60} instead of round (60,60)

Ah, yes, thanks a lot. :blushing:

Sometimes, I just mess up the round bracket, and the curly ones.

VietDao29 · Sep 9, 2006

pavadrin said:

\frac{\pi ^2^2^2}{\log \cos \sin \tan

You forgot to type in the '}' at the end.
\frac{\pi ^2^2^2}{\log \cos \sin \tan }

Water · Sep 11, 2006

I'm having trouble trying to write mass times specific heat times delta T subscript copper to represent the internal energy of a piece of copper. This was one of my many unsuccessful attempts:

mc /Delta T_{copper}

How do you do it?

Testing: mc \partial_{x}. I hope the mc part appears. (Edit: Guess it didn't)

robphy · Sep 12, 2006

Water said:

I'm having trouble trying to write mass times specific heat times delta T subscript copper to represent the internal energy of a piece of copper. This was one of my many unsuccessful attempts:

mc /Delta T_{copper}

How do you do it?

Use \Delta
mc \Delta T_{copper} <---click me

Hyperreality · Sep 24, 2006

Feynman Diagram

Does anyone know how to use the Feynman diagram package in LaTex??

My Miktex has this "feynmf macros", how do I use it??

sylas · Sep 25, 2006

I am wanting to preview a post containing tex. But the preview tells me that it is being generated, and when I refresh to see the result, it then restarts the generation process.

I think.

Is there any way I can preview my tex before posting?

Thanks -- Sylas.

PS. I was trying to enter this:

 \frac{\partial f}{\partial x} = \gamma \\ \frac{\partial f}{\partial t} = \omega c \\ \frac{\partial g}{\partial x} = \omega/c \\ \frac{\partial g}{\partial t} = \gamma \\ \gamma = ...

robphy · Sep 26, 2006

sylas said:

I am wanting to preview a post containing tex. But the preview tells me that it is being generated, and when I refresh to see the result, it then restarts the generation process.

I think.

Is there any way I can preview my tex before posting?

Thanks -- Sylas.

Unfortunately, it seems that wonderful feature was broken in an upgrade.

mbrmbrg · Oct 9, 2006

here is inline text x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}
and normal latexx=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

lately the computer hasn't differentiated.

mbrmbrg · Oct 9, 2006

Ooh, look! itex uses littler font but still the white background!

oen_maclaude · Oct 11, 2006

i guess there is something wrong in the pdf file in
https://www.physicsforums.com/misc/howtolatex.pdf

it should be /tex not \tex

mbrmbrg · Oct 12, 2006

oen_maclaude said:

i guess there is something wrong in the pdf file in
https://www.physicsforums.com/misc/howtolatex.pdf

it should be /tex not \tex

This post rather befuddled me, b/c I learned from that file and never had a problem...
Then I saw it--
although [ t e x ]...[ / t e x ] does appear twice., [ t e x ]...[ \ t e x ] appears once.
It's all in what you look for

!

BTW, can anyone explain the itex \frac{7 days}{1 week} vs tex \frac{7 days}{1 week} deal?

oen_maclaude · Oct 15, 2006

mbrmbrg said:

This post rather befuddled me, b/c I learned from that file and never had a problem...
Then I saw it--
although [ t e x ]...[ / t e x ] does appear twice., [ t e x ]...[ \ t e x ] appears once.
It's all in what you look for !

BTW, can anyone explain the itex \frac{7 days}{1 week} vs tex \frac{7 days}{1 week} deal?

i guess it is better for articles to be consistent. just a thought. Anyway, thanks!

Triss · Oct 17, 2006

oen_maclaude said:

i guess it is better for articles to be consistent. just a thought. Anyway, thanks!

When you write articles, reports and such, you take much more advantage of latex than the forum does. here its just a mean to write readable mathematics. So what 'itex' tries to do is to mimic standard inline math ($ $) and 'tex' looks more like displaystyle math (\[ \]).

mbrmbrg · Oct 17, 2006

Hm. I thought itex was supposed to get rid of the white background, possibly w/o shrinking the font size. Then again, if it's to make it fit the line, of course a fraction has to be shrunk (shrunken?).

MathematicalPhysicist · Oct 18, 2006

spot the error.

hi, I am using texniccenter, and i would appreciate if someone could sopt my errors in my code, and help me correct it.
here's the code:
\begin{normalsize}
\begin{document}
\begin{equation}
\normalsize
m\int\limits_{x_1}^{x_2}
\frac{dv}{dt}dx=\int\limits_'{x_1}^{x_2}F(x)dx
\nonumber\\
dx=\frac{dx}{dt}dt=vdt
\nonumber\\
m\int\limits_{x_1}^{x_2}\frac{dv}{dt}dx=m\int\limits_{t_1}^{t_2}\frac{dv}{dt}vdt
\nonumber\\
=\int\limits_{t_1}^{t_2}\frac(d}{dt}
(\frac{1}{2}v^2)dt=\frac{1}{2}m[v_2^2-v_1^2]
\end{equation}
\end{document}
\end{normalsize}

Triss · Oct 20, 2006

loop quantum gravity said:

hi, I am using texniccenter, and i would appreciate if someone could sopt my errors in my code, and help me correct it.
here's the code:
\begin{normalsize}
\begin{document}
\begin{equation}
\normalsize
m\int\limits_{x_1}^{x_2}
\frac{dv}{dt}dx=\int\limits_'{x_1}^{x_2}F(x)dx
\nonumber\\
dx=\frac{dx}{dt}dt=vdt
\nonumber\\
m\int\limits_{x_1}^{x_2}\frac{dv}{dt}dx=m\int\limits_{t_1}^{t_2}\frac{dv}{dt}vdt
\nonumber\\
=\int\limits_{t_1}^{t_2}\frac(d}{dt}
(\frac{1}{2}v^2)dt=\frac{1}{2}m[v_2^2-v_1^2]
\end{equation}
\end{document}
\end{normalsize}

It does not matter what program you used. If it will not compile it will not compile no matter the program you are useing.

First of all, *never* put any enviroments around, or outside your main document -- just doesn't work. \normalsize also does nothing for you in a math enviroment. a few other errors where in how you used \limits and \frac{}{}. The following compiles nicely

Code:

\documentclass{article}

%\begin{normalsize}
\begin{document}
\begin{equation}
%\normalsize
m\int\limits_{x_1}^{x_2}
\frac{dv}{dt}dx=\int\limits_{x_1}^{x_2}F(x)dx %removed '
\nonumber\\
dx=\frac{dx}{dt}dt=vdt
\nonumber\\
m\int\limits_{x_1}^{x_2}\frac{dv}{dt}dx=m\int\limits_{t_1}^{t_2}\frac{dv}{dt}vdt
\nonumber\\
=\int\limits_{t_1}^{t_2}\frac{d}{dt} %corrected ( => {
(\frac{1}{2}v^2)dt=\frac{1}{2}m[v_2^2-v_1^2]
\end{equation}
\end{document}
%\end{normalsize}

HalfManHalfAmazing · Oct 31, 2006

\oint E\cdot dA = \frac{Q_{enc}}{\epsilon_0}

Yahoo! Finally produced Gauss' Law in latex!

Hootenanny · Oct 31, 2006

Latex Transparency fixed in IE7 :approve:

Orion1 · Nov 3, 2006

VietDao29 said:

The circle command is too small, since the diameter can only be 14 mm. I just wonder if there is a way to magnify the picture? Or to draw a larger circle?

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kingyof2thejring · Nov 7, 2006

\alpha^2\sin(x)

kingyof2thejring · Nov 7, 2006

(E_0-E_1+mc^2)^2=E^2_0+E^2_1 -2E_0E_1cos\theta +(mc^2)^2
E^2_0- 2E_0E_1 +2E_0mc^2+E^2_1-2E_1mc^2 +m^2c^4=E^2_0+E^2_1 -2E_0E_1cos\theta +(mc^2)^2
2E_0mc^2-2E_1mc^2=-2E_0E_1cos\theta+2E_0E_1
2mc^2(E_0-E_1)=2E_0E_1(1-cos\theta)

E=E_0-E_1+mc^2 c^2p^2=E^2_0+E^2_1 -2E_0E_1cos\theta
E^2=c^2p^2+(mc^2)^2

kingyof2thejring · Nov 7, 2006

mc^2(\frac{hc}{\lambda_0}-\frac{hc}{\lambda_1})=\frac{hc}{\lambda_0}\frac{hc}{\lambda_1}(1-cos\theta)
hmc^3(\frac{1}{\lambda_0}-\frac{1}{\lambda_1})=\frac{h^2c^2}{\lambda_0\lambda_1}(1-cos\theta)
\lambda_0\lambda_1(\frac{1}{\lambda_0}-\frac{1}{\lambda_1})=\frac{h^2c^2}{hmc^3}(1-cos\theta)
\lambda_1-\lambda_0=\frac{h}{mc}(1-cos\theta)

E_0=hf_0 f_0=\frac{c}{\lambda_0}
E_1=hf_1 f_1=\frac{c}{\lambda_1}

Divisionbyzer0 · Nov 8, 2006

HalfManHalfAmazing said:

\oint E\cdot dA = \frac{Q_{enc}}{\epsilon_0}

Yahoo! Finally produced Gauss' Law in latex!

This would be better

:

\oint_\mathcal{S} \mathbf{E} \cdot d\mathbf{A} = \frac{Q_\textrm{enc}}{\epsilon_0}

b2386 · Nov 10, 2006

Hi all,

Here is my question:

In the E>U_0 potential barrier, there should be no reflected wave when the incident wave is at one of the transmisson resonances. Assuming that a beam of particles is incident at the first transmission resonance, E=U_0+(\frac{\pi^2 h^2}{2mL^2}), combine the continuity conditions to show that B=0. Here are the continuity conditions:

1st A+B=C+D

2nd k(A- B)=k^{'}(C-D)

3rd Ce^{ik^{'}L}+De^{-ik^{'}L}=Fe^{ikL}

4th k^{'}(Ce^{ik^{'}L}-De^{-ik^{'}L})=kFe^{ikL}

A couple more equations that we already know are k=\sqrt{\frac{2mE}{h^2}} and k^'=\sqrt{\frac{2m(E-U_0)}{h^2}

Here is my attempted solution:

I divided the 4th equation by K and then set equation 3 and 4 equal to each other. I then used the new equation to solve for C in terms of D giving me

C=De^{-2i \pi}\frac{k^{'}+k}{k^{'}-K} where I substituted \frac{\pi}{L} in for k'.

I substituted this result into the first equation to now give me

A+B={De^{-2i \pi}\frac{k^{'}+k}{k^{'}-K} + D.

Solving for D gives me

\frac{A+B}{e^{-2i \pi}\frac{k^{'}+k}{k^{'}-K} + 1} = D

Now, plugging in our solutions for D and C into the 2nd equation

\frac{(A+B)e^{-2i \pi}\frac{k^{'}+k}{k^{'}-K}}{e^{-2i \pi}\frac{k^{'}+k}{k^{'}-K}+1}-\frac{A+B}{e^{-2i \pi}\frac{k^{'}+k}{k^{'}-K}+1}=\frac{k}{k^{'}}(A-B})

At this point, it seems impossible to simplify the equation to a point where it is obvious that B = 0. Am I on the right track or is there an easier way?

Couperin · Nov 12, 2006

17(1-\frac{1}{17^2})^\frac{1}{2}

Does anyone know of a website that allows me to use tex code and generate latex graphics, that isn't necessarily part of a forum like this one?

BTW, the guy who coded LaTeX into this forum is a bloody wizard.

EDIT: God! LaTeX is amazing! I've been checking the examples in this thread... what an invention!

Couperin · Nov 15, 2006

Found one here: http://at.org/~cola/tex2img/index.php

(sorry for double post, I can't find the EDIT button...)

actionintegral · Nov 15, 2006

\frac{x-vt}{\sqrt{1-\frac{v^2}{c^2}}}
\frac{x-vt}{\sqrt{2}}
\sqrt{2}

Greg Bernhardt · Nov 15, 2006

For testing please use:
http://at.org/~cola/tex2img/index.php

Greg Bernhardt · Jan 21, 2007

Here is another latex preview tool suggested by Ranger

http://rogercortesi.com/eqn/index.php

LaTeX Introducing LaTeX Math Typesetting

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