You can try solving this numerically, I get

Results 1 to 5 of 5

- Nov 28th 2011, 11:34 AM #1

- Joined
- Feb 2008
- Posts
- 383

- Nov 28th 2011, 11:50 AM #2

- Nov 28th 2011, 11:55 AM #3

- Joined
- Feb 2008
- Posts
- 383

- Nov 28th 2011, 12:10 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, 12:13 PM #5

- Joined
- Feb 2008
- Posts
- 383