Rudra dev Asked a Question
September 7, 2020 1:38 pmpts 30 pts
Let f: X>X such that f(f(x)) = x for all xeX. Then (a) f is one-to-one and onto (a) b) fis one-to-one, but not onto (c) f is onto but not one-to-one (d) need not be either one-to-one or onto
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  • Deepak singh Best Answer
    see attached solution
    • cropped6741510232446673618.jpg
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  • Deepak singh thankyou
    option a is correct
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