Consider the function defined by

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Consider the function

f:\mathbb R \to \mathbb R

defined by

f(x)=kx+5

, where

k

is a real constant. For

f

to possess an inverse function on

\mathbb R

k

must be (a)

k>0

(b) any non-zero real number (c) any real number (d)

k=1