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Topic: [mg6074] Fourth Order Bounday Value Problem
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Sam Safran

Posts: 1
Registered: 12/7/04
[mg6074] Fourth Order Bounday Value Problem
Posted: Feb 18, 1997 10:22 PM
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Greetings:

I am trying to solve a linear fourth order differential
equation (for example for y[x]) with boundary values (not an initial
value problem), but where the coefficients
are functions of x and not constants. The system seems
to want to do some sort of transformation but cannot
and then gives me error messages;the resulting solution
is not accurate and does even satisfy the boundary
conditions I put in. I suspect that the new boundary
value solver in Mathematica 3.0 can only really
deal with linear second order equations.

Does anyone have any expertise, experience, or
suggestions for dealing with the 4th order system.
Making a new variable g[x]=h''[x] and then solving
two equations for g[x] and h[x] does not work; for
boundary values the system apparently wants
only ONE equation.

Any help? Is there any documentation or user notebooks
on this?

Thanks

Sam Safran
bpsafran@weizmann.weizmann.ac.il

--
Sam Safran
bpsafran@weizmann.weizmann.ac.il





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