Q. 51 B5.0( 2 Votes )

If possible, usin

Answer :

Let A =

To apply elementary row transformations we write:

A = IA where I is the identity matrix

We proceed with operations in such a way that LHS becomes I and the transformations in I give us a new matrix such that

I = XA

And this X is called inverse of A = A-1

Note: Never apply row and column transformations simultaneously over a matrix.

So we have:

Applying R2 R2 + R3

Applying R1 R1 - 2R3

Applying R2 R1 + R2

As second row of LHS contains all zeros, So by anyhow we are never going to get Identity matrix in LHS.

Inverse of A does not exist.

A-1 does not exist. …ans

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