16 . Let
� 3 1 � ��
� � 2 2
T � �
�. � 1 3 � � � � � 2 2 �
( a ) Describe the transformation represented by T .
[ 1 ] ( b ) T transforms the point P to the point ( 8 , 0 ). Find the coordinates of P .
( c ) Write down the smallest positive integer n such that a 2� 2 identity matrix .
[ 3 ] T n � I , where I is
[ 2 ]
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