Sarthaks Test
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Express the following functions as set of ordered pairs and determine their range.

f : X → R, f (x) = x3 + 1, where X = {–1, 0, 3, 9, 7}

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We have, f : X→ R,f(x) = x3 + 1.

Where X = {-1, 0, 3, 9, 7}

Now f (-l) = (-l)3 +1 =-l + 1 =0

f(0) = (0)3 +l=0+l = l

f(3) = (3)3 + 1 = 27 + 1 = 28

f(9) = (9)3 + 1 = 729 + 1 = 730

f(7) = (7)3 + 1 = 343 + 1 = 344

f= {(-1, 0), (0, 1), (3, 28), (9, 730), (7, 344)}

Range of f= {0, 1, 28, 730, 344}

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