Question: 5. (4 MARKS) Suppose that A is a 4 x 3 matrix. Denote the rst, second and third column of A by Ff, and g,

5. (4 MARKS) Suppose that A is a 4 x 3 matrix. Denote the rst, second and third column of A by Ff, and g, respectively. Suppose that l 1 > > } 2 ) :~ ) 2 vI2v2+3v3= andvlv2+v3= 1 1 0 0 Then A 1 = 2 2 0 2 1 (a) 3 (b) _21 (C) 21 (d) (2] (6) None of these 1 2 0 2 6. (4 MARKS) Suppose that A is an invertible 2 x 2 matrix such that 23 _1 _ 00 (01)A +12-(0 0). (\")%(_I}2j) (b)('02j) (c) (3'23) (d) % ( _1 3 ) (6) None of these new

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