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Question
The inverse of the matrix `[[-1,5],[-3,2]]` is _______
Options
1/13`[[2,-5],[3,-1]]`
1/13 `[[-1,5],[-3,2]]`
1/13 `[[-1,-3],[5,2]]`
1/13 `[[1,5],[3,-2]]`
MCQ
Sum
Solution
(A) 1/13`[[2,-5],[3,-1]]`
|A| = - 2 + 15 = 13
`A^-1 = ("adj" A)/|A| = ([[2,-5],[3,-1]])/13`
`A^-1=1/13[[2,-5],[3,-1]]`
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