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MathGroup Archive 1999

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Re: Re: 4th order DE, NDSolve no solution, why?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15757] Re: [mg15725] Re: 4th order DE, NDSolve no solution, why?
  • From: "Kevin J. McCann" <kevinmccann at home.com>
  • Date: Sun, 7 Feb 1999 02:03:42 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Chris,

That is the first I have seen.  Wonder where I got the idea?  I guess I
was thinking about eigenvalue problems like

y''[x] + y[x] == 0, y[0]==0,y[1]==0

Which NDSolve will do, but it gives y=0 only, not all of the other
possibilities.

Kevin

-----Original Message-----
From: Chris Grant <grant at math.byu.edu> To: mathgroup at smc.vnet.net
Subject: [mg15757] [mg15725] Re: 4th order DE, NDSolve no solution, why?


>
>"Kevin J. McCann" writes:
>
>>Doug,
>>
>>NDSolve doesn't do two-point boundary value problems.
>
>The last example on page 886 of _The Mathematica Book_ is a two-point
>boundary value problem.  Halfway down page 887 there is an example of a
>three-point boundary value problem.
>
>Chris Grant
>



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