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

From: Brian Gough
Subject: Re: [Help-gsl] computing nth root of beta tan(beta) = L
Date: Tue, 13 May 2008 19:05:16 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.1 Mule/5.0 (SAKAKI)

At Fri, 9 May 2008 16:47:57 -0400,
Levi Waldron wrote:
> 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.

Sorry, there is no specific function for that.

Brian Gough

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