If A is an invertible matrix of order 2, then det `(A^(-1))`is equal to(a) det (A) (B) `1/(det(A)` (C) 1 (D) 0
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We have given that A is an invertible matrix of order 2
Then we have to find det `(A^(-1))`
As we know that
`A``A^(−1)=I`
Taking determinant both sides
`|A``A^(−1)|=|I|`
`|A||A^(−1)|=|I|`
`|A||A^(−1)|=I`
...
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