Row-reducing a gamma-4 matrix

thelazyman

Junior Member
Joined
Jan 14, 2006
Messages
58
Hi I have the following gamma 4 matrix:

T4 = - { 0 1 -1 2
| 1 2 0 0
| -1 0 2 0
| 2 0 0 2

How does that become:

-2 1 -1 2
1 2 0 0
-1 0 2 0
0 0 0 2

How would -2 be at the top without the other 3 variables in the same row being afffected?

I understand how they got the bottom, but how is the top justified?
 
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