Dnia Sat, Jan 10, 2009 at 01:15:28PM -0500, Aditya Mahajan napisał(a):
> On Sat, 10 Jan 2009, Marcin Borkowski wrote:
>
> >Hi all,
> >
> >I'd like to typeset a system of simultaneous equations. I want it to
> >have a brace on the left (like "cases"), but inside I want it to have
> >two columns aligned like "align". Also, I'd like to have the vertical
> >space between the equations be small (like in cases), not so big as in
> >align.
> >
> >How to do this?
>
> I do not completely understand what you want. Do the following give the
> desired output.
Sorry;).
> \starttext
>
> \startformula
> \startcases[align={right,left},distance=3pt]
> \NC 2x + 3y \MC{} = 10 \NR
> \NC 3x + 2y \MC{} = 5 \NR
> \stopcases
> \stopformula
>
> \startformula
> \startmatrix[align={right,left},distance=3pt,left={\left\{},
> right={\right.}]
> \NC 2x + 3y \NC{} = 10 \NR
> \NC 3x + 2y \NC{} = 5 \NR
> \stopmatrix
> \stopformula
>
> \stoptext
Both work just fine, but with distance=0pt instead. Thanks! There is
only a minor problem with the former one: it's somehow shifted to the
left compared with the latter (both in MkII and MkIV). I have no idea
why.
> The {} after the alignment \NC is useful if the next symbol is something
> that can be a uniary or binary symbol (eg, + or -). The {} tells tex to
> treat is as a binary symbol.
Of course - the {} is an "ord" atom for TeX, AFAIR.
> If you frequently need something like this, you can use
> definemathcases/definemathmatrix to define a new environment with
> appropriate parameters.
Yes; however, I'd still have to use the {} after the \NC...
>
> Aditya
Thank you!
--
Marcin Borkowski (http://mbork.pl)
Nie mam w ręku miecza, ani karabinu, stoję nieuzbrojony pod murami Babilonu.
Wzywam pomocy Ducha - Duch przychodzi w ogniu!
Wokół zostają tylko gruzy Babilonu!
(Korzeń Z Kraju Melchizedeka)
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