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[Help-gsl] computing nth root of beta tan(beta) = L

From: Levi Waldron
Subject: [Help-gsl] computing nth root of beta tan(beta) = L
Date: Fri, 9 May 2008 16:47:57 -0400

Is there a GSL function for computing the nth positive root of
beta*tan(beta) = L for arbitrary values of L?  I couldn't find it in the
manual, but not all special functions give their specifications in the
manual and I don't know what this equation is called.  It is used in the
plane sheet solution of the heat/diffusion equation with type II (Neumann)
boundary condition.

Levi Waldron, PhD
Treated Wood Research Group
Faculty of Forestry, University of Toronto
33 Willcocks Street, Toronto ON, M5S 3B3 CANADA
Tel 647-866-5384
Fax 416-978-3834
Email: address@hidden

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