How do you find #(A-2I)^2X=0# given #A=((3, 1, -2), (-1, 0, 5), (-1, -1, 4))#?
I tried this but I am not sure about it...I'll ask for review anyway.
have a look:
One solution would be (the trivial one):
I think that the three equations aren't independent (the first one is the third multiplyed by