I was wondering why this is correct.
Actually, I solved problem in my exam (this style).
But, I still cannot understand why A I change to I A' with row operation.
Hello. Nice to meet you. I have just enrolled. :)
I knew how to solve and to find out inverse Matrix by using Gaussian elimination.
However, I was wondering why AI -> IA' is satisfactory.
In my university, I was just taught how to use but wasn't taught why it is satisfactory.
Thank you for...