Q27 of 215 Page 3

Mark the correct alternative in each of the following:
Which of the following functions from A = {x ϵ R : –1 ≤ x ≤ 1} to itself are bijections?

Given that A = {x : –1 ≤ x ≤ 1}

a. f(x)=|x|

It is not one-one because f(-1)=1 and f(1)=1.

It is bijective as it is one-one and onto with range [-1, 1].

Mark the correct alternative in each of the following:

The function f : R → R, f(x) = x² is

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A function f from the set of natural, numbers to the set of integers defined by

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Let f: Z → Z be given by Then, f is

Mark the correct alternative in each of the following:

The function f : R → R defined by f(x) = 6^x + 6^|x| is

Mark the correct alternative in each of the following:Which of the following functions from A = {x ϵ R : –1 ≤ x ≤ 1} to itself are bijections?