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Quantitative Aptitude

Functions

If f x =1+x/1...

Question

If f(x) = then which of the following is necessarily true?

A

f^-1(x) f(x) = 1

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B

f^-1(x) f(x) = -1

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C

f^-1(x) = f(x)

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D

f^-1(x) - f(x) = 2

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Solution

The correct option is B f^-1(x) f(x) = -1
option (b)

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