Question

A function f(x) is defined from A to B then f ^-1 is defined __________

(a) from A to B

(b) from B to A

(c) depends on the inverse of function

(d) none of the mentioned

I got this question during an online interview.

My question is based upon Inverse of a Function in portion Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer 1

The correct answer is (b) from B to A

To explain I would say: Inverse associate each element in B with corresponding element in A.