Consider the following bases for Mat₂,₂ R:
B: = [0 1 ] [ 1 1 ] [ 1 0 ] [ 1 0 ]
[1 0 ] [ 0 0 ] [ 1 0 ] [ 0 1 ]
C: = [ 1 1 ] [ 1 0 ] [ 1 1 ] [ 0 1 ]
[ 0 1 ] [ 1 1 ] [ 1 0 ] [ 1 1 ].
Find PC←B