Apps. and Interpretation for IBDP Maths Ebook 2 | Page 94

Your Practice Set – Applications and Interpretation for IBDP Mathematics SE Production Limited 84 Let 1 2 3 0 5 6 0 3 2 � � � � � � � � � � � � � � � A , 2 7 11 � � � � � _{� �} � � � � B and x y z � � � � � _{� �} � � � � X . ( a ) Write down �1 A . [ 2 ] ( b ) Solve X in the equation � AX B . [ 3 ] ( a ) 1 5 3 1 8 8 1 3 0 4 4 3 5 0 8 8 � � � � � � � � � � � � � � � � � � � � � � � A A2 [ 2 ] ( b ) � AX B �1 � X A B ( M1 ) for valid approach 9 4 13 2 17 4 � � � � � � � � � � _{� �} � � � � � � � � X A2 [ 3 ] Example Solution 27 Paper 1 – Systems of Equations