[texhax] Nested commands, Matrix labels

[Lloyd]

I have two problems, both in LaTeX .  

 

1.       I'm trying to bold a subscripted symbol which is also an element in
a matrix.  I tried this with:

 

\mathbf{\beta}, but it simply doesn't work.  Any ideas here?

 

            2.  How to I assign an equation number to a matrix equation?   I
know I can assign "equation" numbers to rows in an array, but that's not
what I want.  But I'm not opposed to using  the array setup to get the job
done.

 

            Thanks, 

 

            Lloyd 

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