CUET Preparation Today
If A is any m × n matrix and B is a matrix such that AB and BA are both defined, then B is a matrix of order : |
n ×m m × m n × n m × n |
n ×m |
The correct answer is Option (1) → $n ×m$ let order (B) = $p×a$ Order (A) = $m×n$ AB → defined ⇒ $n=p$ BA → defined ⇒ $m=a$ so order (B) = $n×m$ |
