Compute the products AB and BA whichever exists in each of the following cases:

Question

Philoid · Accepted Answer

<img w='228' height='78' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ23741/1543402217408365.png' style='vertical-align: center;'> <img w='297' height='24' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ23741/154340221815728.png' style='vertical-align: center;'> <img w='278' height='24' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ23741/1543402218906964.png' style='vertical-align: center;'> Hence, <img w='511' height='78' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ23741/1543402219670669.png' style='vertical-align: center;'>