Re: [O] LaTeX equation align in orgmode?

[Andreas Leha]

Hi Rainer,

Rainer M Krug <address@hidden> writes:
> Hi
>
> I would need in a document several equations which are aligned as in 
> http://tex.stackexchange.com/a/167908/6941
>
> How can I use the following latex formula in orgmode?
>
> \begin{proof} The proof is a follows: 
> \begin{align}
> (x+y)^3&=(x+y)(x+y)^2\\
>        &=(x+y)(x^2+2xy+y^2)\\
>        &=x^3+3x^2y+3xy^3+x^3.\qedhere
> \end{align}
> \end{proof}
>
>
> I have effectrively
>
> #+LATEX_HEADER: \usepackage{amsmath}
>
> * The equations
>
> \begin{equation}
> \begin{align}
> (x+y)^3&=(x+y)(x+y)^2\\
>        &=(x+y)(x^2+2xy+y^2)\\
>        &=x^3+3x^2y+3xy^3+x^3.\qedhere
> \end{align}
> \end{equation}
>
>
> but with latex fragment preview (C-c C-x C-l) I only get an empty frame.
>
> How can use this align environment in org?

This seems to a problem with your setup of preview latex.  It
should work just fine.

For me the following org file works as expected -- also with
previewing the equation.

--8<---------------cut here---------------start------------->8---
#+LaTeX_header: \usepackage{amsmath} %% needed explicitely for org-preview-latex


* Test align

\begin{align}
(x+y)^3&=(x+y)(x+y)^2\\
       &=(x+y)(x^2+2xy+y^2)\\
       &=x^3+3x^2y+3xy^3+x^3.\qedhere
\end{align}
--8<---------------cut here---------------end--------------->8---

I do not seem to have any special setup for previewing latex,
though...

Sorry to be of no further help.

Regards,
Andreas