# [Tugindia] Re: equation- how to

Sreejith Pulloor sreejithpk at gmail.com
Thu Oct 20 10:08:01 CEST 2005

thanks to everyone.
it worked now. i will get the latex primer and refer it in future.

thanks again,
Sreejith

On 10/20/05, CV Radhakrishnan <cvr at river-valley.com> wrote:
> On Thu, October 20, 2005 2:37 am, Sreejith Pulloor said:
> > seems to be simple but didnt have any success
> >
> > i want to have two equations aligned (without numbes) inside a left
> > bracket "{ "
> > i tried like following (please understand i dont have much experience
> > using latex... so might be wierd way--)
> >
> >  \left\{
> > \begin{array}{l}
>
> [...]
>
> > \right.
>
> > it didnt work..
>
> The best way would be to try the following:
>
>  $$\left\{ > \begin{array}{lcl} > \mu (\nabla u , \nabla v) &=& (f,v)\\ > (\nabla \cdot{u},q) &=& 0 > \end{array} > \right.$$
>
> Alternatively, insert '\usepackage{amsmath}' in the preamble and then:
>
>  $$> \begin{cases} > \mu (\nabla u , \nabla v)& = (f,v)\\ > (\nabla \cdot{u},q)&= 0 > \end{cases} >$$
>
> In cases environment, you need not enter any braces, it will be
>
> > and i also have some questions on how to interpret some of the  error
> > messages.
> > for example when i tried the above tex thrown some error message  like
> > following:
> >
> > ! Missing $inserted. > > Since \left, \right, \mu etc will work only math mode, math shift > character '$' is needed before you use these commands.  So, TeX says that
> a '\$' (in other words math shift character) is missing.
>
> --