# Check whether the following matrix is invertible or not: (1001) - Mathematics and Statistics

Sum

Check whether the following matrix is invertible or not:

((1,0),(0,1))

#### Solution

Let A = ((1,0),(0,1))

Then, |A| = |(1,0),(0,1)| = 1 - 0 = 1 ≠ 0.

∴ A is a non-singular matrix.

Hence, A-1 exists.

Concept: Elementry Transformations
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