# Math Help - Matrix groups and conjugate

1. ## Matrix groups and conjugate

I understand that for part a K is a normal subgroup of L through strategies eventually equating with a lower traingular matrix such like L. But when i try to manipulate H i end up with a really weird final result?! such as fractions and a lengthy multiplication in the bottom left corner. Any help would be appreciated.

And any pointers on b) would be an extra bonus!

Many thanks, Hanna.

2. ## Re: Matrix groups and conjugate

Hi Hanna,

I leave to you the determination of conjugates, but here's an answer to the first part:

If you have problems with the conjugates, reply to this posting.