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Topic: Auto composition yields exponential
Replies: 5   Last Post: Aug 12, 2010 11:50 AM

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Posts: 28
From: Norman, Oklahoma
Registered: 3/11/08
Auto composition yields exponential
Posted: Aug 10, 2010 6:11 PM
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I found this problem on Yahoo! Answers and although the poster indicated he had a solution it cannot be correct. Since the problem is very interesting, I thought I'd let the brain trust here have a go at it. So far I've made very little progress and perhaps someone here will solve it before I do, which would be favorable to me as well.

Problem: Find the function g(x) such that g(g(x)) = 2^x.

Here's the original post:;_ylt=AsLpPn5pluAJ3qCNBQ7yNpnFDH1G;_ylv=3?qid=20100809223201AAtlBUT

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