Under the translation (x,y)→(x−1,y+2)the point (−2,3) will become
Let X = {1, 2, 3, 4} and Y = {1, 5, 9, 11, 15, 16} Determine which of the following sets are functions from X to Y. (i) f1={(1,1),(2,11),(3,1),(4,15)} (ii) f2={(1,1),(2,7),(3,5)} (iii) f3={(1,5),(2,9),(3,1),(4,5),(2,11)}
If the relation R:A→B where A={1,2,3,4} and B={1,3,5} is defined by R={(x,y):x<y,x∈A,y∈B}, then ROR−1 is