Question

3. Which of the following is not true? Every relation from the set A to the set B is a function from the set A to the set B. Olff is a function from A to B and (a, b) e f, then f(a) = b, where a is called the pre-image of b under f. Every function from the set A to the set B is a relation from the set A to the set B Iff is a function from A to B and (a, b) ef, then f(a) = b, where b is called the image of a under f.​

Answer 1

Answer:

it is not necessarily that every relation must be function

as every relations also have more than 1 images and it is not necessarily that r: A to B, it not necessarily that set A = domain , for relation

Hence, A is not true