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Roni1985
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Homework Statement
Determint the subspace fo R2x2 consisting of all matrices that commute with the given matrix:
a) A=[(1,0)^T,(0,-1)^T]
c) A=[(1,0)^T,(1,1)^T]
Homework Equations
The Attempt at a Solution
What I need to show is that AB=BA. So, I am trying to see when it happens...
I think I got them right buy let me see:
let B be any matrix in the subspace
a) S= {B | b12=b21=0} OR it should be S= {B | b12=-b21}
c) S= {B | b21=0 and b11=b22 }
are they correct ?
perhaps I am a little off with the notations :\
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