What is Latex: Definition and 999 Discussions

Latex is a stable dispersion (emulsion) of polymer microparticles in water. Latexes are found in nature, but synthetic latexes are common as well.
Latex as found in nature is a milky fluid found in 10% of all flowering plants (angiosperms). It is a complex emulsion consisting of proteins, alkaloids, starches, sugars, oils, tannins, resins, and gums that coagulate on exposure to air. It is usually exuded after tissue injury. In most plants, latex is white, but some have yellow, orange, or scarlet latex. Since the 17th century, latex has been used as a term for the fluid substance in plants, deriving from the Latin word for "liquid." It serves mainly as defense against herbivorous insects. Latex is not to be confused with plant sap; it is a distinct substance, separately produced, and with separate functions.
The word latex is also used to refer to natural latex rubber, particularly non-vulcanized rubber. Such is the case in products like latex gloves, latex condoms and latex clothing.
Originally, the name given to latex by indigenous Equator tribes who cultivated the rubber tree, Hevea brasiliensis, was "caoutchouc", from the words caa ('tear') and ochu ('tree'), because of the way it is collected.

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  1. T

    LaTeX Write the permutation and combination formulas using latex

    How do you write the permutation and combination formulas using latex. This is the best I can do: n_P_r=\frac{n!}{(n-r)!}
  2. P

    LaTeX Instructions on how to use Latex

    Are there instructions on how to use Latex on this site anywhere please? I can't find any...
  3. I

    LaTeX Math Latex Test: 22.26% Calculation Result

    \frac{\mid 1 - 1.212226 \mid}{1} \times 100\% = 22.26\%
  4. qspeechc

    LaTeX Adding Images to LaTeX: A Quick Guide

    Hello everyone. How do you insert pictures into a LaTeX document? Say I have a jpeg, gif, or whatever, file, and I want the image to show up in my document, how do I insert it? Thanks.
  5. I

    LaTeX Simple Latex Fraction Calculation: 0.054

    \frac{12.34 - 12.33}{12.33} x 100 = 0.054
  6. T

    LaTeX Troubleshooting Latex Errors: Why Do Certain Latex Commands Always Have Errors?

    how come whenever I use latex...for some reason two of the latex have errors but the others always work when I preview...if I try deleting those two which have errors than some other two latex have errors then...why?any way to around the problem?
  7. D

    LaTeX Troubleshooting LaTeX Code: \frac{1}{q_{2}} = \frac{A q_{1} + B}{C q_{1} + D}

    I'm having some trouble with LaTex. Here is the LaTex code: \frac{1}{q_{2}} = \frac{A q_{1} + B}{C q_{1} + D} And it should produce this: \frac{1}{q_{2}} = \frac{A q_{1} + B}{C q_{1} + D} Here, it's produced just fine. But in TeXnicCenter, it produces this instead...
  8. H

    LaTeX How do I write a system of equations with dots in latex?

    Hi Folks, I want to write a system of equations in latex. The equations is something similar as follows, http://farm4.static.flickr.com/3081/2466547973_636ea6137f_o.jpg Generally, its ok to write system of equations in latex. But i don't have any idea how can I place the dots like what you...
  9. Mapes

    LaTeX How do I remove the space before Depth... in my LaTex table?

    Hi folks, Quick LaTex question: the following code produces a space before "Depth..." in the second row. How on Earth do I make it go away? \begin{table} \centering \caption{Possible definitions of critical depth or thickness for traction-exerting cells on 2-D substrates.}...
  10. N

    LaTeX How to Use Latex in Word (2007): A Faster Way to Type Formulas

    Hi, I don't know if this is the right place for my question, but here goes... I was wondering if it is possible to use Latex to type formules (just like on this forum) in Word 2007. I am now using either MathType or the built in equation editor but I think they're too much of a hassle...
  11. F

    LaTeX How to Create a Tridiagonal Matrix with Lambda Values in Latex?

    take home exam urgent latex help! hi! i don't know anything about latex, but i need pictures a matrix: it is a tridiagonal matrix with (1-2lambda) on the main diagonal (except for the last row where it's 1-lambda) and lambdas above and below: [(1-2*lambda) lambda 0 0 ........ 0]...
  12. E

    LaTeX Solving Latex Bibliography Issues

    [SOLVED] latex question When I compile that with the texnic center, the numbering the bibliography is messed up. Does anyone know why?
  13. K

    LaTeX How I can use a vertical bar to represent evaluation in LaTeX

    Hey guys. This might not be the right place for this, but any ideas on how I can use a vertical bar to represent evaluation in LaTeX? Example \displaystyle \frac{d}{dt} |_{t=0} f(t) I would like the vertical bar to be the size of the differential. I've tried using \left|, \right|...
  14. E

    LaTeX Spell check when writing in latex using the texnic center?

    [SOLVED] spell check latex Is it possible to use spell check when writing in latex using the texnic center?
  15. E

    LaTeX Latex Execution on this Site: No Bold Fonts?

    \mathbf{\mu} What is used to execute latex on this website? When I type that into TeXnic center and compile it without MikTex, it is not bold on my computer.
  16. F

    LaTeX Troubleshooting Image Display Issues in LaTeX

    Hi, I am new to LaTeX and am having trouble putting images up on a document; I am using TeXnicCenter (in it u can use .jpg or .pnp files aprently but not .ps). i use \usepackage(graphicx) ... \insertgraphic(sample.jpg) which I thought should be enough to display the image. compiling...
  17. V

    LaTeX Learn How to Use Bra-ket Notation in LaTeX for Quantum Mechanics

    is there anyway of doing bra-ket notation in latex?
  18. N

    LaTeX Latex Bibliography Without Title

    [SOLVED] Latex Bibliography Whenever I create a bibliography in latex using \bibliographystyle{plain} \begin{thebibliography}{1} \bibitem{Reference 1}Details about Reference 1 \bibitem{Reference 2}Details about Reference 2 \end{thebibliography} It puts the title `References'...
  19. E

    LaTeX How to Create an Inexact Differential in Latex?

    [SOLVED] inexact differential in latex Does anyone know how to make an inexact differential in latex?
  20. N

    LaTeX Master Latex Integration: Learn How to Form Integrals in Minutes

    I don't even know how to put integration signs on this someone help, this is ridiculous lol
  21. S

    LaTeX How do I split equations in LaTeX

    Couldn't think of a better place to post this. I'm writing a document in latex that has several very large equations in it. I can split them up so that they take up two or three lines using the \begin{split} command or \begin{align} command, but If I need to split a line that is contained within...
  22. qspeechc

    LaTeX Djvu and Latex downloads for Windows XP - What to Download & How

    Can someone explain what Djvu (.djvu files) is, and I notice there are several versions one can get- which one should I download if I have Windows XP? Also, I need to get Latex to create equations- which version should i download and how do I go about it? Also, can you recommend a text that...
  23. H

    LaTeX Why Does LaTeX Parser Not Always Generate an Error?

    Someone sent me a private message with LaTeX in it. The images are never of the formula that the messanger wrote, but instead of a formula I've recently seen. Reloading the image doesn't help (that works for images in the main forums) -- and the image I actually see has changed over time...
  24. J

    LaTeX Welcome to the Forum Latex Symbols Demystified

    Hi everyone I am a new member of this forum and I wonder how can I use those Latex codes for mathematical slymbol displays? I try typing those codes but it came out just the way I type them, do i need to install something before I can use those codes?
  25. N

    LaTeX Increase Line Spacing in Title - Quick Latex Question

    I hope this is the correct section, I don't see why not? I want to increase my line spacing JUST for my title and nowhere else. The only line spacing change command I can find is a global one. Any help?
  26. A

    LaTeX Can we use LaTeX in our posts?

    can we use LaTeX in our posts ?
  27. C

    LaTeX ΣquPlus Library of LaTeX and MathML Snippets

    http://equplus.net/ http://equplus.net/"
  28. S

    LaTeX Wrapping multiple figures with text in latex

    How to wrap more than one figures with text in latex?
  29. E

    LaTeX How do you get a cube, fourth, fifth root in latex?

    [SOLVED] latex question How do you get a cube, fourth, fifth root in latex? I mean how do you get a little 3 to appear in the upper left next to the square root sign?
  30. D

    LaTeX How Can I Position a Paragraph at the Bottom of a Page in LaTex?

    Hello, I have a simple question on formatting with LaTex. I use the MiKTeX 2.6 package and write the code in TeXnicCenter. What I want is for a paragraph to be on the bottom of the page. My teacher wants the abstract on the cover page. So I have my name and the experiment name on the...
  31. W

    LaTeX LaTex: figures positioning & sizing

    Dear everyone, would you be so kind to help me with the small problem, which you might find funny as well (or it's usual, banal?..).. the thing is that i currently work on my PhD, and want to increase the number of pages in easy way, you know.. in other words i try to enlarge the figures! o:)...
  32. M

    LaTeX Page Numbering in LaTeX: Help Finding Command

    I've tried Google, but since I'm not sure on what the command is actually called, I'm having some difficulties finding this command. What it does is to remove the page number on the page with the title and abstract, yet keep the internal structure unchanged, that is, the page after the front...
  33. H

    LaTeX Writing IEEE Papers in LaTeX: Files & Syntax

    How do i go about writing IEEE papers in Latex do i need to download some additional files for it , Or whts the syantax to write IEEE format papers
  34. K

    LaTeX Show the bounds of an integral in LaTeX

    Hey I'm typing out my math homework, and I've run into some notation that I'm kind of confused about: I need to know how to show the bounds of an integral after you've taken the antiderivative. Kind of like this: Integral (bounds: 0 to 2) of x^2 = [1/3x^3] (0 to 2). The actual...
  35. Saladsamurai

    LaTeX Typesetting Software for Macbook: Any Recommendations?

    I would like to get some kind of typesetting software for my Macbook. Anyone use one on theirs who could point me in the right direction? If possible, keep the technical terms to a minimum:redface: I get lost in them easily ;) Thanks, Casey
  36. M

    LaTeX Free LaTeX Packages for Writing in Microsoft Word

    Hey, Is there a way of using this program or a similar one to write in microsoft word, or is it only available online? I'm just interested as I have heard people taking notes on their laptops using it. Thank you.
  37. R

    LaTeX Adding Images to LaTeX from PDF Sources

    Hey folks, I plan to use a figure from a paper (Hubble diagram for type 1a supernova demonstrating accelerated expansion).' I'm want to put the image in a \LaTeX document. Of course, I could use the Snapshot tool in Adobe reader and then grab the image and import into photoshop say then...
  38. K

    LaTeX How can I put multiple line equations inside a box in Latex?

    I am not sure if this is the right place to post a Latex question. If not, tell me where I should go. I would like to put equations inside a box. Now, I have found two ways to do this butthey work only for single line equations. The best method is to simply put the equations between boxed...
  39. A

    LaTeX Making LaTeX Characters Bigger: Possible?

    Hi ! I did search the forum and don't found any thread about this questions: it is possible to chance the size of the latex characters? I know that if we use the word "itex" instead of "tex" the characters become smaller (to fit the font text size I think), but if we want to make the...
  40. P

    LaTeX Latex Reference for New Users: Integral Help

    Is there a Latex reference for new users? I was unable to figure out how to post an infinite integral with which I need help. I got the integral sign to post and also the upper boundary but could not get the integrand or lower boundary to appear correctly. thanks
  41. malawi_glenn

    LaTeX Big vert in LaTeX: Analyzing Angular Distribution

    Hi! I would like to have larger verts, representating abs, you can see for yourself how ugly this looks: \dfrac{d\sigma }{d\Omega } (\pi ^+ \text{p}) = \dfrac{1}{k^2}\left[ \vert a^{\tfrac{3}{2}}_{0,\tfrac{1}{2}} + \left( 2a^{\tfrac{3}{2}}_{1,\tfrac{3}{2}} + a^{\tfrac{3}{2}}_{1,\tfrac{1}{2}}...
  42. Saladsamurai

    LaTeX Free programs that use Latex that I could insert in a ms word doc and attach

    So I love how in PF I can use Latex to communicate the language of Math and Physics to discuss a particular problem effectively. But, sometime I want to discuss outside PF, like via e-mail. Is there any free programs that use Latex that I could insert in a ms word doc and attach? I hate...
  43. C

    LaTeX LaTeX: Drawing Coxeter/Dynkin graph

    Hi. Do you know of any package to draw Coxeter graphs and Dynkin diagrams in LaTeX directly? Currently I'm taking Lie-algebra's and working out my assignment in (PDF)-LaTeX. I need to draw a simple Coxeter graph / Dynkin diagram, like the following: O==o--o--o--o--o==O where o indicates an...
  44. J

    LaTeX Is there a Windows equivalent of Grapher for exporting LaTeX equations?

    Hello. I use LaTeX a lot for homework and stuff like that. I also use it to email questions and stuff like that to proffessors. Anyway, i am pretty proficient at it and its syntax but sometimes it gets hard to make equations. On my mac, i often use Grapher (a surprisingly powerful built in...
  45. N

    LaTeX Convert latex code to fortran code?

    I have very large equations that I need to solve using numerical techniques. The equations are in latex. From these now I need to form matrix in fortran and then continue the solution procedure in fortran. Can anyone advice how I can do this conversion from latex code to fortran code. The number...
  46. J

    LaTeX Trouble with displaying figures in LaTeX

    I'm using TeXnic center and I'm trying to figure out how to display figures in LaTex, but all I'm getting is a blank space. (No errors, though. Also, I haven't had problems with ordinary LaTeX stuff.) \documentclass{article} \usepackage{amsfonts} \usepackage{amsmath} \usepackage{amssymb}...
  47. JasonRox

    LaTeX Creating Tabs in WinEdt for LaTeX PDFs

    How can you create tabs in WinEdt for LaTeX on a PDF file? When I write a proof, I want it to be indented in by one tab. How do I do that? Note: The simple press tab does not work.
  48. X

    LaTeX Effortlessly Post Math Formulas with a LaTeX Parser/Converter on Your Website

    Long time lurker, first time poster, and I'm embarrassed that my first post is a request. I'm in the process of creating a website which will require being able to post mathematical formulae by the public, and the best solution I've thought of for this is the same LaTeX solution that this forum...
  49. ranger

    LaTeX Effortless LaTeX Conversion: Simplify Equations with Automatic Typing Conversion

    Is it possible to have some sort of setup where plain text typing can be converted to latex? It can sometimes be annoying to try and analyze posts that have long equations and so on. Most new users to PF probably arent even aware of the latex setup that we currently have. Much less try and learn...
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