Heat conduction problem in a ring of radius a

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1. Apr 30, 2016

rx24race

1. The problem statement, all variables and given/known data
We previously solved the heat conduction problem in a ring of radius a, and the solution is

c into the sum, perform the sum first (which is just a geometric series), and obtain the general solution, which should only involve one integral in ϑ

2. Relevant equations

3. The attempt at a solution

2. May 1, 2016

Ellazhu223

where is this geometric series come from Never seen it before