Let A = {1, 2, 3} and B = {2, 3, 4}, then which of the following relations is a function from A to B ?
{(1, 2), (2, 3), (3, 4), (2, 2)}
{(1, 2),(2, 3), (1, 3)}
{(1, 3), (2, 3), (3, 3)}
{(1, 1), (2, 3), (3, 4)}
Given,
[f(x)]3
- f(x)
3f(x)
None of these
Which of the following proposition is a tautology?
D.
If N denote the set of all natural numbers and R be the relation on N
symmetric only
reflexive only
transitive only
an equivalence relation