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(i) Find the determinant of the following n X n matrix: 1 . . . O a1 . . . O O A = 1

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(i) Find the determinant of the following n X n matrix: 1 . . . O a1 . . . O O A = 1 0 a2 . . . . . . . . . . . . .. O ... O an - where a1, a2, . .. , an # 0 (ii) Find the value of x for which the matrix 2 10 A = x+7 -3 0 4 X is invertible

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