Question: 10. (10 MARKS) For 3:, 'y E (00, 00) with 3: ; 0, determine the rank 'r(A), where :1: 3 2 1 A: m 5

10. (10 MARKS) For 3:, 'y E (00, 00) with 3: ; 0, determine the rank 'r(A), where :1: 3 2 1 A: m 5 3:+'y3 x+y+4 0 l r1 'y+3 0 1 y :1: Hint: the rank T'(A) depends on the values my. For example, you need to nd all 32,3; E (00,00) with 3: at 0 such that MA) : 2 , and to nd all 32,3; 6 (00,00) with :1: 75 0 such that :r'(/-l) = 3
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