So now we can get mathy in here?

[TheAmmoniacal]

Apparently he installed LaTeX, was that the reason for the downtime?

For inline:

Code: [Select]

\( code here \)\(  e^{i \pi} = cos(\theta) + i \sin(\theta) \)

Code: [Select]

$$ usual math mode $$$$ e^{i \pi} = cos(\theta) + i \sin(\theta)$$
$$ \oint_C {E \cdot d\ell = - \frac{d}{{dt}}} \int_S {B_n dA} $$
Woo!

[EEVblog]

Apparently he installed LaTeX, was that the reason for the downtime?

No it was not.
I installed a header script that point to some Latex server thingo. I do not know the details. Someone posted it in another thread so I added it and it supposedly works. I know nothing about LaTex.

[cdev]

Its MathJax..

Both it and MathML display beautifully on my machine.

You just need to have fonts that contain the right glyphs, no longer do they need to render small parts in bitmaps. Firefox and variants have supported MathML for well over a decade. 

LaTeX used to have to be rendered by various kludges like the amazingly complicated latex2html.

Which churned equations into a mix of html and small gifs..

what

[Zero999]

I can't see any formulae, just code.

[AlfBaz]

I'm seeing properly rendered formulae on my tablet with the bog standard android browser

[German_EE]

I'm missing something. I hit the 'Insert Code' button on the top (the hash button) then place my LaTeX code between the start and end commands. However, when I preview all I see is the code rather than the formula, what am I doing wrong?

[AlfBaz]

I'm missing something. I hit the 'Insert Code' button on the top (the hash button) then place my LaTeX code between the start and end commands. However, when I preview all I see is the code rather than the formula, what am I doing wrong?

Don't use that. Quote Ammoniacal's first post to see what you need to use as quoting it will reveal the formatting.

Preview doesn't seem to work on windows IE but if I hit post the rendered text appears

$$ \sqrt{\frac {C_{2}R_{2}-R_{1}\left (2C_{1}+C_{2}\right)}{4C_{1}^{2}C_{2}\pi^{2}\left (R_{1}^{3}+R_{1}^{2}R_{2}\right )}} $$

[AlfBaz]

I suspect "Preview" rendering may need patching also

[tggzzz]

I'm missing something. I hit the 'Insert Code' button on the top (the hash button) then place my LaTeX code between the start and end commands. However, when I preview all I see is the code rather than the formula, what am I doing wrong?

If your browser surpresses JavaScript (e.g. NoScript plugin), you may need to enable JavaScript from mathjax.org.

[T3sl4co1l]

\( x = \frac{-b}{2a} \pm \sqrt{b^2 - 4ac} \)

Thanks Dave!

Tim

[Brumby]

\( x = \frac{-b}{2a} \pm \sqrt{b^2 - 4ac} \)

Thanks Dave!

Tim

\( x = \frac{{-b} \pm \sqrt{b^2 - 4ac}} {2a}\)

Ah - that's how it works.

[Brumby]

I'm missing something. I hit the 'Insert Code' button on the top (the hash button) then place my LaTeX code between the start and end commands. However, when I preview all I see is the code rather than the formula, what am I doing wrong?

The 'Insert Code' button allows you to have source code displayed without being interpreted and translated.... exactly the OPPOSITE of what you wanted!

[Dave]

I have a feeling this will come in handy.

\( D=e^{ins}\cdot p \)

[BravoV]

Works here  , rendered properly at :

- Desktop & laptop -> Windoze -> Waterfox browser (x64 Firefox)
- Mobile -> Android -> CM Browser (CM = Cheetah Mobile)

[AlxDroidDev]

I am using Chrome v48.0 on Windows 7 and everything appears as it should.

Let me give it a try:    \( y=\sqrt{\frac{x^2}{x+1}}\qquad \)

BTW: This is a nice site to write and test the equations, then just copy and paste the equation code here using the proper opening and closing tags: http://www.sciweavers.org/free-online-latex-equation-editor

[EEVblog]

Someone mentioned on twitter that Latex is a potential server security threat? 

[MatthewEveritt]

No idea what they're on about. All the rendering is done in the browser, not the server - all the server sees is some text strings that mean nothing to it just like any other comment.

There is another way of doing this where the server actively parses the comments looking for \$\LaTeX\$, compiles them itself and inserts the resultant image, which could be a security nightmare if done wrong. Which is why nobody does that now the browser based renders can do it.

Edit: If it's the comment I'm thinking of, about being an easy target, perhaps he's just referring to the fact that you installed something you didn't understand?

[edy]

I see formulas on my BlackBerry Z10.

[Macbeth]

Ooh. Lets give this a go...

\(f = \frac{1} {2\pi \sqrt{LC}}\)

...shame it doesn't work in preview

I wonder if this will break it 

Code: [Select]

[glow=grey,1,10]\(I = \frac{V}{R}\)[/glow]
\(I = \frac{V}{R}\)

Edit: I like AlxDroidDev's [glow] trick!

[nctnico]

If you right-click on the equations in Firefox you can also set the scaling and other settings!

[Morgoroth]

preview issue is easy to fix, only need to add mathjax code in template for 'post replay'/'preview'.

\$\mathfrak{F}(f) = \int_{-\infty}^\infty f(t) e^{-j2\pi ft} dt\$

[Macbeth]

If you right-click on the equations in Firefox you can also set the scaling and other settings!

Same with Chrome. I have a little MathJax menu...

[rrinker]

IE as well, right click context menu and you can zoom, see the LaTeX code, whatever.

[HAL-42b]

Someone mentioned on twitter that Latex is a potential server security threat? 

Even if so the Mathjax code on your site is rendered at cdn.mathjax.org so it shouldn't be an issue. In any case let's keep an eye out for any vulnerabilities.

[nctnico]

@Macbeth: I don't like the shading effect though; it makes the formulas difficult too read.

All in all I think this is a very cool and useful extension of the forum!