Cryptokyo TMUA Problem Set · Question 12

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Cryptokyo TMUA Problem Set · Q12

Logic & proofFunctions & graphs

We say a function is multiplicatively bounded if and only if $f(xy)\le f(x)f(y)$ and $f(0)>0$ .

Is $f(x)\ge1$ a necessary condition for a multiplicatively bounded function?

ANo - it is neither necessary nor sufficient

BNo - it is sufficient but not necessary

CYes - it is necessary

DYes - it is necessary and sufficient

EIt depends on the value of

f(0)

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