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Question
If A = `[(1,-1,0),(2,3,4),(0,1,2)]` and B = `[(2,2,-4),(-4,2,-4),(2,-1,5)]`, then:
Options
A−1 = B
A−1 = 6B
B−1 = B
B−1 = `1/6 "A"`
MCQ
Solution
B−1 = `1/6 "A"`
Explanation:
AB = 6I ⇒ B−1 = `1/6 "A"`
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