LaTeX.org

My editor is called TeXShop as far as I can see. And I guess my TeX system is TeX Live.

I am using mac os X, and when I open my output through adobe it is correct, so it is obviously only in LaTeX there is a problem, and I would like to fix that - is that possible?

I am not sure what causes it. For example running this:
\begin{equation*}
\fed{\hat{\beta}}\sim N\left(\fed{\beta},\frac{1}{n}\left[\frac{1}{\hat{\sigma}_{m}^{2}}\right]\Sigma\right)
\end{equation*}
returns different output every time it is run. Sometimes it is correct but mostly not. I have ...

Hi everyone
I am writing a thesis in LaTeX in Mathematics, and my output (=>.pdf) is really weird. It changes every time a run my code. Especially my math equations/arrays etc. are behaving weird.

Help HELP plEASE

Ph