If R is a relation from set A = {11, 12, 13} to set B = {8, 10, 12} defined by y = x − 3, the write R − 1 .

Question

Philoid · Accepted Answer

Here,A={11,12,13} and B={8,10,12}

Also,R={(x,y) : y=x-3 ,xϵ A ,yϵ B}

={(11,8),(13,10)}

Now,R^-1 ={(x,y) : x=y+3 ,xϵB ,yϵ A}

={(8,11),(10,13)}