for n- fixed integer prove that(adsbygoogle = window.adsbygoogle || []).push({});

phi(x)=n has a finite number of solutions

I looked at 2 cases when x is even and when x is odd

1) if x is even then phi(2x)>phi(x) and I showed why it has a finite number of solutions

2) i'm not sure how to show for the case when x is odd.. any ideas?

thanks :)

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# Phi(x) math

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