Q. 485.0( 1 Vote )

Mark the correct alternative in each of the following:

Let f(x) = x3 be a function with domain {0, 1, 2, 3}. Then domain of f–1 is

A. {3, 2, 1, 0}

B. {0, –1, –2, –3}

C. {0, 1, 8, 27}

D. {0, –1, –8, –27}

Answer :

Given that f(x) = x3 be a function with domain {0, 1, 2, 3}.


Then range = {0, 1, 8, 27}


f can be written as {(0, 0), (1, 1), (2, 8), (3, 27)}


f-1 can be written as {(0, 0), (1, 1), (8, 2), (27, 3)}


So, the domain of f–1 is {0, 1, 8, 27}

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