I can't seem to generate multiple lines within a single [ tex ][ /tex ] block. It's supposed to happen if I type \\ but it just never works for me. Example: [tex] f_1(x) = x \\ f_2(x) = 1-x^2 [/tex] The "f_{2}(x)" is supposed to start on a new line. What am I doing wrong?
Unfortunately I'm not going to be of any help to you. I've also tried this numerous times, but to the same effect.
I don't think that the \\ has ever worked on the forums, it must be some kind of bug in the software. However, one can start new lines using the flalign environment. [tex] \begin{flalign*} f_1\left(x\right) & = & & x\\ f_2\left(x\right) & = & & 1-x^2\\ f_3\left(x\right) & = & & \frac{f_1}{f_2} \\ & = & & \frac{x}{1-x^2} \end{flalign*} [/tex] And the code: Code (Text): \begin{flalign*} f_1\left(x\right) & = & & x\\ f_2\left(x\right) & = & & 1-x^2\\ f_3\left(x\right) & = & & \frac{f_1}{f_2} \\ & = & & \frac{x}{1-x^2} \end{flalign*} The * is used to suppress line enumeration. The alignment of each element is fixed to alternate between left and right as shown below Code (Text): \begin{flalign*} right & left & right & ... \\ right & left & right & ... \\ right & left & right & ... \\ \end{flalign*} But you can add additional & separators to obtain the desired layout, as I have done above: Code (Text): \begin{flalign*} right & left & & left \\ right & left & & left \\ right & left & & left \\ \end{flalign*} I agree that this method is far more verbose than simply using \\ is mathmode, but it is the only work-a-round that i know of for PF. Note that the eqnarray environment does not display correctly either at PF.
Thanks Hoot. So the &'s help line up the equal signs. And if I just wanted to left-justify each line, each line would start with a &. Code (Text): \begin{flalign*} & f_1(x) = x \\ & f_2(x) = 1-x^2 \end{flalign*} I also found this previous discussion in a locked thread: https://www.physicsforums.com/showthread.php?t=8997&highlight=latex+line&page=19 However, in chroot's examples the code uses TWO begin and TWO end statements, eg. \begin{equation*} \begin{split} So the single begin statement \begin{flalign*} is an improvement over that. Thanks again! RB
I've never known it to work in LaTeX either. (Remember that [ itex ] ... [/itex] is analogous to $ ... $, and [ tex ] ... [/tex] is analogous to \[ ... \])
[tex] \] This is the first line.\\ This is the second line.\\ This is the third line. \[ E=mc^2 \] This is another line. \[ [/tex] Click on the rendered image to see what I did. Maybe some [tex]\LaTeX[/tex] expert can explain what is going on. I suspect that the forum software already places us in a [tex]\LaTeX[/tex] environment... and these \[ \] break us out of it somehow.
Sounds precisely right to me: the [tex] tag acts like \[ and by typing \], you close the latex environment.
Now that we are using MathJax, I am revisiting how to generate multiple lines within a single LaTeX code block. EDIT: Nevermind, I found out how to do this: https://www.physicsforums.com/showthread.php?p=261329 Also, scroll down post #1 here for multi-line examples: https://www.physicsforums.com/showthread.php?t=8997 Please disregard the following... I just now noticed a problem with these old posts (for example Post #'s 1 and 3 above). Right now I see the LaTeX code, without the [_tex_] tags, enclosed in a box and left-right centered in the page. I have FireFox 4 and Windows 7. Apparently MathJax doesn't like the double-backslash newline indicator, and that is preventing the code from being processed properly. Testing: Using same code from Post #1 again: [tex] f_1(x) = x \\ f_2(x) = 1-x^2 [/tex] Same code, with double-backslash removed: [tex] f_1(x) = x f_2(x) = 1-x^2 [/tex] So the question is, is it possible anymore to generate a new line within the same [_tex_] code block? Hootenanny's trick in Post #3 used to work -- not that I am advocating going back to the old LaTeX system.
Here: [tex] \begin{align} a & b \\ c & d \end{align} [/tex] This one gives weird results: [tex] \begin{multline} a b \\ c d \end{multline} [/tex]