Maharashtra State BoardHSC Commerce 12th Board Exam
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Check whether the following matrices are invertible or not: [1001] - Mathematics and Statistics

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Sum

Check whether the following matrices are invertible or not:

`[(1, 0),(0, 1)]`

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Solution

let A = `[(1, 0),(0, 1)]`

Then, |A| = `|(1, 0),(0, 1)|`
= 1 – 0
= 1 ≠ 0
∴ A is a non-singular matrix.
∴ A is invertible.

Concept: Inverse of Matrix
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