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Question

Express the function f : X → R given by f(x) = x3 + 1 as set of ordered pairs, where X = {−1, 0, 3, 9, 7}. [NCERT EXEMPLAR]

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Solution

The function f : X → R is defined by f(x) = x3 + 1, where X = {−1, 0, 3, 9, 7}.

Now,

f-1=-13+1=0f0=03+1=1f3=33+1=28f7=73+1=344f9=93+1=730

So, f=x,fx:xX=-1,0,0,1,3,28,7,344,9,730

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