Question
Mathematics Question on Matrices
If A and B are two matrices such that AB=B and BA=A then A2 + B2 =
A
AB
B
A+B
C
2BA
D
2AB
Answer
A+B
Explanation
Solution
The correct answer is (B) : A+B.
If A and B are two matrices such that AB=B and BA=A then A2 + B2 =
AB
A+B
2BA
2AB
A+B
The correct answer is (B) : A+B.