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## Main Question or Discussion Point

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i'm wondering if it will be possible to let n=1/2 and have the half iterate to 2^x i was looking for earlier, where by that i mean a function such that f(f(x))=2^x. i'm guessing that solving one problem would be roughly as difficult as the other...

if you happen to know of a good article on nonlinear difference equations, i'd appreciate it. i'm also looking at the logistic.

_{n+1}=2^{an}where n is a natural number and a_{0}is some fixed real number. (in case it's not clear, what's on the right hand side is 2 to the a_{n}power.) thanks!i'm wondering if it will be possible to let n=1/2 and have the half iterate to 2^x i was looking for earlier, where by that i mean a function such that f(f(x))=2^x. i'm guessing that solving one problem would be roughly as difficult as the other...

if you happen to know of a good article on nonlinear difference equations, i'd appreciate it. i'm also looking at the logistic.

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