Question

two matrices A and B are multiplicative inverse of each other only if
1. AB =BA=0
2. AB=BA
3. AB=0,BA=1
4. AB=BA=1
(((please chooss the right option and if possible gimme an explanation also)))☺️ It's urgent please understand.


please don't answer wrong ​

Answer 1

Answer:

The two matrics A and B are multiplicative invers of each other only if AB = BA = 1 ...

The mltiplicatuve inverse makes the matrics inversed but the value remains the same .

In A and B AB = BA = 1 the muktiplicative inverse will be same ...

Answer 2

Answer:

Two matrics A and B are multiplicative inverse of each other if and only if AB=BA=1.

So, the answer is AB=BA=1...option 4th.

I hope this helped you deariee!