Is inverse of a matrix unique?

3 ⤊

Is inverse of a matrix unique?

I get different answers while trying to find inverse by different methods.Are all those answers right if my procedure is right?

2007-11-13 16:06:45 · 2 answers · asked by sweety 2 in Science & Mathematics ➔ Mathematics

2 answers

Suppose we have a matrix A with two inverses, B and C.

Then:

AB = I

premultiply both sides by C and you get:

CAB = C
IB=C
B=C

Hence inverses are indeed unique.

2007-11-13 16:21:44 · answer #1 · answered by Anonymous · 2⤊ 0⤋

the inverse is unique so you must be making a mistake somewhere to be finding different results

2007-11-14 00:10:56 · answer #2 · answered by Stefanie M 2 · 1⤊ 0⤋