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-- Mathematics - Section B1
Determinants
If A = [3468], then what can be said about 18 A−1?
18A−1 = 9 (adj A)
18A−1 = 2 (adj A)
18A−1 = 18 (adj A)
None of these
A = [3468],
|A| = 0
So, A−1 does not exist