Q1 of 118 Page 3

Mark the correct alternative in the following:

Let A = {1, 2, 3}, B = {2, 3, 4}, then which of the following is a function from A to B?


A function is said to be defined from A to B if each element in set A has an unique image in set B. Not all the elements in set B are the images of any element of set A.

Therefore, option C is correct.

More from this chapter

All 118 →
17

Find the set of values of x for which the functions f(x) = 3x2 – 1 and g(x) = 3 + x are equal.

 18

Let f and g be two real functions given by

f = {(0, 1), (2, 0), (3, -4), (4, 2), (5, 1)} and g = {(1, 0), (2, 2), (3, -1), (4, 4), (5, 3)}.


Find the domain of fg.


 2

Mark the correct alternative in the following:

If f : Q → Q is defined as f(x) = x2, then f-1 (9)s is equal to


 3

Mark the correct alternative in the following:

Which one of the following is not a function?