[texhax] Problem with eqnarray

[Modhurita Mitra]

Hi,
 	I made the changes you and Morten suggested, so now my expression 
looks 
like

\begin{eqnarray}
  f(x,y,z) & = & P \times \\
  \exp \bigl[ -\bigl( \frac{ \cos \theta \cos \phi (x - \mu_x) \\
                            + \sin \theta (y - \mu_y) \\
                   - \cos \theta \sin \phi (z - \mu_z)}{A_x} \bigr)^2 \\
            -\bigl(\frac{ \sin \theta \cos \phi (x - \mu_x) \\
                        + \cos \theta (y - \mu_y) \\
                  + \sin \theta \sin \phi (z - \mu_z)}{A_y} \bigr)^2 \\
  -\bigl( \frac{\sin \phi (x - \mu_x) + \cos \phi (z - \mu_z)}{A_z} 
\bigr)^2 \bigr]
\end{eqnarray}

However, I still get the errors:

! Missing } inserted.
<inserted text>
                 }
l.270 ...- \cos \theta \sin \phi (z - \mu_z)}{A_x}
                                                    \bigr)^2 \\
?
! Extra }, or forgotten \endgroup.
<inserted text> }

l.270 ...- \cos \theta \sin \phi (z - \mu_z)}{A_x}
                                                    \bigr)^2 \\
?
! Missing } inserted.
<inserted text>
                 }
l.270 ...- \cos \theta \sin \phi (z - \mu_z)}{A_x}
                                                    \bigr)^2 \\
?

Could it be that there is some unbalances { somewhere earlier in the text?

Yes, I do tend to press on even when I see an error since then I can see 
many errors at once and don't have to compile the file several times.

I am kind of a novice at LaTeX, so I am not sure about the package you 
mention. There was \usepackage{natbib} at the beginning of the template 
file I am using. And I am using AASTeX, which is called the style file, I 
think, for astrophysical journals.

Thanks,
Sincerely,
M.

On Fri, 8 Apr 2005, Robin Fairbairns wrote:

>>  	I am having trouble compiling my file which contains an eqnarray.
>> At the third line in the following expression (the one beginning with
>> - \cos, I get an error.
>
> in that case, you're not compiling what we see here, or you've some
> highly eccentric package you don't bother to mention:
>
>> \begin{eqnarray}
>>   f(x,y,z) & = & P \times \\
>>   \exp \left \[ -\left( \frac{ \cos \theta \cos \phi (x - \mu_x) \\
>
> \[ opens displaymath mode, so \left\[ produces the error
>
>  ! Missing delimiter (. inserted).
>
> and then (if you're crazy enough to press on)
>
>  ! LaTeX Error: Bad math environment delimiter.
>
>>                             + \sin \theta (y - \mu_y) \\
>>                    - \cos \theta \sin \phi (z - \mu_z)}{A_x} \right)^2 \\
>
> i suggest you clear up that error (there's a \] later on to clear up,
> too).  if that lot then works, perhaps you might consider using one of
> the amsmath align environments in place of the seriously grotty
> eqnarray
>
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