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Question

Mathematics Question on Relations and functions

Let f : R ⇢ R be defined by f(x)=x2+1f (x) = x^2 +1. Then the pre images of 17 and –3 respectively are

A

Φ, {4,-4}

B

{3,-3},Φ

C

{4,-4},Φ

D

{4,-4},{2,-2}

Answer

{4,-4},Φ

Explanation

Solution

The correct answer is Option (C) : {4,-4},Φ