Re: [voxtech] latex help
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Re: [voxtech] latex help
awesome. shawn, i'm really glad you're on the list. :)
btw, \fder and \fpar are my own macros:
\def\fpar#1#2{\frac{\partial#1}{\partial#2}}
\def\fder#1#2{\frac{d#1}{d#2}}
they're implemented with \def because when i wrote them over 6 years
ago when i was only using pure tex. i didn't know much about latex back
then. :)
pete
begin Shawn P. Neugebauer <spn@ucdavis.edu>
> replace "\noalign..." with:
>
> \intertext{\rule{45pt}{0pt}\hrulefill\rule{30pt}{0pt}}
>
> where you adjust the values "45" and "30" so that the line starts
> at the appropriate place on the left and right, respectively. (if you
> didn't know about this trick, these are called struts: rules with
> 0 widththey take up space and adjust spacing but don't print
> anything). as you probably know, you can get rid of the "*" if you want
> equation numbering, and you can tag equations you do not want
> numbered by adding "\notag" to the end of the line (before "\\").
> you might need to play with the vertical spacing here (e.g.,
> get rid of the "5pt", insert a vertical strut on the rule line, etc.)
> to achieve the look you're looking for.
>
> FYIyou didn't define \fpar, but i don't think it matters.
>
> i'm sure there's a more elegant way of getting want you want,
> but this looks pretty good on my screen.
>
> shawn.
>
> On Wednesday 01 May 2002 10:40 pm, you wrote:
> > hey there,
> >
> > i'm trying to achieve this effect in latex (i'm adding two equations
> > together):
> >
> >
> > a = b + f
> > d = e + f
> > 
> > a+d = b + e +f
> >
> > here's what i have:
> >
> > \begin{align*}
> > \left( \vec{p} \times \vec{A} \right)_k =& p_i A_j  p_j A_i = i\hbar
> > \fpar{A_j}{x_i} + A_j p_i  \left[ i\hbar \fpar{A_i}{x_j}  A_i p_j
> > \right]\\ \left( \vec{p} \times \vec{A} \right)_k =& A_i p_j  A_j p_i
> > \\[5pt] %
> > \noalign{\hrule}\\[5pt]
> > %
> > \text{Sum} =& i\hbar \left[ \fpar{}{x_i}A_j  \fpar{}{x_j}A_i \right]
> > = i\hbar \left[ \vec{\nabla}\times \vec{A} \right]_k
> > \end{align*}
> >
> > it almost works. here's what i'm getting:
> >
> >
> > a = b + f
> > d = e + f
> > 
> > a+d = b + e +f
> >
> > the hrule goes to the left margin. i've tried playing around with
> > parboxes to no avail.
> >
> >
> > anyone know how to do this?
> >
> > pete
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