Date: Dec 22, 2011 3:00 AM
Author: mailcwc@gmail.com
Subject: Question about solve

>> clear all
>> syms f n R1 R1 t
>> solve('1/f = (n-1)(1/R1-1/R2-n/(n-1)*t/R1/R2)','t')
Warning: Explicit solution could not be found.
> In solve at 81
ans =
[ empty sym ]

I tried to solve the LensMaker's equation for t as above,
but it didn't find the answer.

Do I use solve in the wrong way?

This equation should have explicit solution as in the following link.
http://is.gd/3E62xg