Hi Rainer,
Rainer M Krug <rai...@krugs.de> 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
