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Question
If A =`[(1, -1), (2, 3)]` and adj (A) = `[(a, b), (-2, 1)]`, then ______
Options
a = 1, b = 3
a = 3, b = 1
a = 1,b = -2
a = 3, b = -2
MCQ
Fill in the Blanks
Solution
If A =`[(1, -1), (2, 3)]` and adj (A) = `[(a, b), (-2, 1)]`, then a = 3, b = 1.
Explanation:
A = `[(1, -1), (2, 3)]`
Adj (A) = `[(3, 1), (-2, 1)]`
⇒ a = 3, b = 1
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Application of Matrices
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