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MathJax Testing LaTeX (powered by MathJax)

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Chris L T521

Well-known member
Staff member
Jan 26, 2012
995
East Lansing, MI
\[\int_0^{\infty}e^{-x^2}\,dx=\frac{\sqrt{\pi}}{2}\]

This is inline: \(\frac{\sqrt{b^2-4ac}}{2a}\)

Other centered equation

$$\Gamma(x)=\int_0^{\infty}e^{-t}t^{x-1}\,dt $$
 
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The Chaz

Member
Jan 26, 2012
24
So LaTex in brackets is centered? Not sure I get the syntax, though I'm trying to scroll through it on the mobile...
 

Ackbach

Indicium Physicus
Staff member
Jan 26, 2012
4,177
Rochester, MN
So \ ( and \ ), with no spaces, gives you inline. \ [ and \ ], with no spaces, gives you displayed. \(x^{2}+4x-4=0\), but \[x^{2}+4x-4=0.\]

The first is inline, the second displayed.
 

Prove It

Well-known member
MHB Math Helper
Jan 26, 2012
1,403
How odd. I was able to do centred fine using the dollar signs, but the others wouldn't work...
 

Ackbach

Indicium Physicus
Staff member
Jan 26, 2012
4,177
Rochester, MN
How odd. I was able to do centred fine using the dollar signs, but the others wouldn't work...
Yeah, it looks like the double-dollar signs are enabled for displayed equations, but the single are not enabled for inline, although MathJax is capable of doing those as well. Chris mentioned to me in an email that the reason for that is there are quite a few algebra problems concerning money, and newbies would have a hard time escaping those characters.
 

ThePerfectHacker

Well-known member
Jan 26, 2012
236

Prove It

Well-known member
MHB Math Helper
Jan 26, 2012
1,403
Yeah, it looks like the double-dollar signs are enabled for displayed equations, but the single are not enabled for inline, although MathJax is capable of doing those as well. Chris mentioned to me in an email that the reason for that is there are quite a few algebra problems concerning money, and newbies would have a hard time escaping those characters.
I actually meant starting with the square and round brackets didn't work. Maybe I wasn't doing it right...

Test: \( (a + b)^n = \sum_{r = 0}^n {n\choose{r}}a^{n-r}b^r \)

\[ \lim_{h \to 0}\frac{\sin{h}}{h} = 1 \]

Hmm, now it works ><
 

CaptainBlack

Well-known member
Jan 26, 2012
890
Test:

Some text then inline \(f(x)=\sin(x^2/23)\) OK

\[f(x)=\frac{1}{\sin(x)}\] OK

\( \displaystyle f(x)=\frac{1}{\sin(x)} \).....\( f(x)=\frac{1}{\sin(x)} \) - just messing with the inline form

more text.

The thing that I don't like about the MathJax \ [ ... \ ] delimiters is the amount of white space inserted before and after the LaTeX

Note the [ noparse] [ /noparse] taggs are not working

CB
 
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Chris L T521

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Jan 26, 2012
995
East Lansing, MI
Test:

Some text then inline \(f(x)=\sin(x^2/23)\) OK

\[f(x)=\frac{1}{\sin(x)}\] OK

\( \displaystyle f(x)=\frac{1}{\sin(x)} \).....\( f(x)=\frac{1}{\sin(x)} \) - just messing with the inline form

more text.

The thing that I don't like about the MathJax \ [ ... \ ] delimiters is the amount of white space inserted before and after the LaTeX

Note the [ noparse] [ /noparse] taggs are not working

CB
Since this being called from the MathJax js file, there was no need to create a BBcode for it. Hence, noparse will have no effect on it.
 

Ackbach

Indicium Physicus
Staff member
Jan 26, 2012
4,177
Rochester, MN
Since this being called from the MathJax js file, there was no need to create a BBcode for it. Hence, noparse will have no effect on it.
So question: how do we output raw LaTeX code? Verbatim?
 
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Chris L T521

Well-known member
Staff member
Jan 26, 2012
995
East Lansing, MI
So question: how do we output raw LaTeX code? Verbatim?
It turns out you can do that using the code tags. For example,

Code:
$\displaystyle\int_{\partial M} \omega$
would compile to \( \large{\displaystyle{\int_{\partial M} \omega}} \).
 
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sbhatnagar

Active member
Jan 27, 2012
95
Writing Inline LaTeX

Add "\displaystyle" to the beginning of your inline latex code.

LaTeX without "\displaystyle"

Code:\int_{0}^{\infty}\frac{\ln(x)}{(x-a)(x-b)}dx

\( \int_{0}^{\infty}\frac{\ln(x)}{(x-a)(x-b)}dx \)

LaTeX with "\displaystyle"

Code:\displaystyle \int_{0}^{\infty}\frac{\ln(x)}{(x-a)(x-b)}dx

\( \displaystyle \int_{0}^{\infty}\frac{\ln(x)}{(x-a)(x-b)}dx \)
 

Markov

Member
Feb 1, 2012
149
Re: Writing Inline LaTeX

I just realized the LaTeX is showing itself nicely! That's good.

Perhaps a little suggestion: I love to render LaTeX by using the dollar sign, but, is there a way to render fractions, sums, integrals, etc by not using \displaystyle? It's annoying to write it everytime!
 

Ackbach

Indicium Physicus
Staff member
Jan 26, 2012
4,177
Rochester, MN
Re: Writing Inline LaTeX

Try double-dollar signs (two to open, two to close).
 

Markov

Member
Feb 1, 2012
149
Re: Writing Inline LaTeX

Well it didn't work that well, because by using doble dollar sign, it will center the content, and I don't always need to center the content.
 

afwings

New member
Mar 7, 2012
9
Austin TX USA
Just thought I'd test out some things too. Here's an inline equation \(u = \phi \cdot \exp \left\{ {{\textstyle{1 \over 2}}\sigma \left( {x + y} \right)} \right\}\) and here's a display (centered) equation \[{\rm{Bond Value}} = {\rm{C}}\left[ {\frac{{1 - \frac{1}{{{{\left( {1 + {\rm{r}}} \right)}^{\rm{t}}}}}}}{{\rm{r}}}} \right] + \frac{{{\rm{FV}}}}{{{{\left( {1 + {\rm{r}}} \right)}^{\rm{t}}}}}\]
So, how'd that work out?
 

afwings

New member
Mar 7, 2012
9
Austin TX USA
Just thought I'd test out some things too. Here's an inline equation \(u = \phi \cdot \exp \left\{ {{\textstyle{1 \over 2}}\sigma \left( {x + y} \right)} \right\}\) and...
Ok, that's something I just noticed -- following the MathJax close delimiter -- \) -- even if I add a space, the space doesn't show up in the post. Wonder what happens if I add 2 spaces? Here's a shot at it: \({b^2} - 4ac
% MathType!MTEF!2!1!+-
% feaagGart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj
% MCPbqedmvETj2BSbqefm0B1jxALjhiov2DGCKCLv2AGW0B3bqefqvA
% Tv2CG4uz3bIuV1wyUbqee0evGueE0jxyaibaieYhf9irFfeu0dXdh9
% vqqj-hEeeu0xXdbba9frFj0-OqFfea0dXdd9vqai-hGuQ8kuc9pgc9
% q8qqaq-dir-f0-yqaiVgFr0xfr-xfr-xb9adbaqaaeGaciGaaiaabe
% qaamaaeaqbaaGcbaGaamOyamaaCaaaleqabaGaaGOmaaaakiabgkHi
% TiaaisdacaWGHbGaam4yaaaa!4201!
\) ok, I added 2 spaces, and still one showed up. Nice to know. (If it's already been pointed out, sorry I missed it.)

Trying something else. Here's a simple matrix: \[\left[ {\begin{array}{*{20}{c}}{10}&{20}\\{30}&4\end{array}} \right]
% MathType!MTEF!2!1!+-
% feaagGart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj
% MCPbqedmvETj2BSbqefm0B1jxALjhiov2DGCKCLv2AGW0B3bqefqvA
% Tv2CG4uz3bIuV1wyUbqee0evGueE0jxyaibaieYhf9irFfeu0dXdh9
% vqqj-hEeeu0xXdbba9frFj0-OqFfea0dXdd9vqai-hGuQ8kuc9pgc9
% q8qqaq-dir-f0-yqaiVgFr0xfr-xfr-xb9adbaqaaeGaciGaaiaabe
% qaamaaeaqbaaGcbaWaamWaaeaafaqabeGacaaabaGaaGymaiaaicda
% aeaacaaIYaGaaGimaaqaaiaaiodacaaIWaaabaGaaGinaaaaaiaawU
% facaGLDbaaaaa!43CF!
\]
 

Jameson

Administrator
Staff member
Jan 26, 2012
4,000
I'm not following what's going on in the matrix you made. Is that the intended output or did something go wrong?
 

afwings

New member
Mar 7, 2012
9
Austin TX USA
I'm not following what's going on in the matrix you made. Is that the intended output or did something go wrong?
Jameson, thanks for following up on that. There are really 2 issues shown in my post, neither of which I believe to be MHB's error.

  1. When viewing the forum in FF16 for Windows (and only in that configuration), the character immediately following an inline equation rendered by MathJax overlaps the right edge of the equation. If a period follows the equation, the period ends up inside the equation, like this one (again, this effect only happens on Windows, only in Firefox, and only with Math Renderer > MathML): \(\left( {x,y} \right)
    % MathType!MTEF!2!1!+-
    % feaagGart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbdfgBPj
    % MCPbqedmvETj2BSbqefm0B1jxALjhiov2DGCKCLv2AGW0B3bqefqvA
    % Tv2CG4uz3bIuV1wyUbqee0evGueE0jxyaibaieYhf9irFfeu0dXdh9
    % vqqj-hEeeu0xXdbba9frFj0-OqFfea0dXdd9vqai-hGuQ8kuc9pgc9
    % q8qqaq-dir-f0-yqaiVgFr0xfr-xfr-xb9adbaqaaeGaciGaaiaabe
    % qaamaaeaqbaaGcbaWaaeWaaeaacaWG4bGaaiilaiaadMhaaiaawIca
    % caGLPaaaaaa!40E2!
    \). I've filed this as a MathJax bug, but it may be a Firefox bug. There are other things going on in Firefox 16. (And it may already be corrected; hard to tell.)
  2. The second issue is related to how MathType codes matrices with the Math Help Boards translator, which will be added to Cut & Copy Preferences when MathType 6.9 is released (no projected release date yet). We've already corrected this.

Bob
 

Jameson

Administrator
Staff member
Jan 26, 2012
4,000
Hi Bob,

Glad it's all working then. I notice in your post how a long string of code renders a very short \(\displaystyle \left( {x,y} \right) \). I'm guessing this is part of the Math Type plugin?

Anyway, it sounds like you're more than on top of things so I won't ask you to explain it all to me. Just let me know if there's anything I can do and if any of the issues are on our end :)

Best,
Jameson
 

Jay

New member
Aug 19, 2014
14
Upstate New York, USA
So question: how do we output raw LaTeX code? Verbatim?

You insert LaTeX code verbatim like this using CODE and /CODE tags enclosed within square brackets. Everything between the tags will be listed verbatim.


Code:
$$X = \sum_{n=0}^5\left(\left(\sum_{j=1}^k   A_{X,n,j}  \cdot  {cos(B_{X,n,j}   +   t \cdot C_{X,n,j})}\right) \cdot t^n\right)$$


which means:
$$X = \sum_{n=0}^5\left(\left(\sum_{j=1}^k A_{X,n,j} \cdot {cos(B_{X,n,j} + t \cdot C_{X,n,j})}\right) \cdot t^n\right)$$
 
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