You can try solving this numerically, I get

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- Nov 28th 2011, 12:34 PM #1

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- Nov 28th 2011, 12:50 PM #2

- Nov 28th 2011, 12:55 PM #3

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- Nov 28th 2011, 01:10 PM #4
## Re: Log problem.

To do so you will need the Lambert W function Lambert W function - Wikipedia, the free encyclopedia

Numerically will be your best bet. Here is a start, by algebra we have that

So we can see the answer is between 15 and 20, just keep going

- Nov 28th 2011, 01:13 PM #5

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