Studied by 11 peopleHow to write order
rows x columbs
Identity matrices
( 1 0 ) OR ( 1 0 0 )
( 0 1 ) ( 0 1 0 )
( 0 0 1 )
Symmetric matrix
Entries symmetrical around leading diagonal
Reflection in x-axis
( 1 0 )
( 0 -1 )
Reflection in y-axis
( -1 0 )
( 0 1 )
Reflection in y = x
( 0 1 )
( 1 0 )
Reflection in y = -x
( 0 -1 )
( -1 0 )
Enlargement
( K 0 )
( 0 K )
180 degree rotation about origin
( -1 0 )
( 0 -1 )
Note
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