[petsc-users] KSPBuildSolution

Juha Jäykkä juhaj at iki.fi
Sat Feb 19 04:19:35 CST 2011


>   I don't know how to handle the f'(1) = b. I was always taught to first
> introduce new variables to reduce the problem to a first order equation.
> For example let g = f'  and the new problem is F(f,g,g') = 0 with the
> additional equations g = f' now there are no second derivatives.

Yes, that's always an option and for time stepping, for instance, that is 
probably always the best way to go, but I did not think that would be 
necessary for a simple second order ODE - albeit a non-linear one.

Let me see what happens if I do that...

Cheers,
-Juha

-- 
		 -----------------------------------------------
		| Juha Jäykkä, juhaj at iki.fi			|
		| http://www.maths.leeds.ac.uk/~juhaj		|
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