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MathGroup Archive 2007

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Re: Kernel Crashing with NDSOlve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73724] Re: [mg73663] Kernel Crashing with NDSOlve
  • From: "Chris Chiasson" <chris at chiasson.name>
  • Date: Sun, 25 Feb 2007 04:44:25 -0500 (EST)
  • References: <ermdtt$i3t$1@smc.vnet.net> <200702240713.CAA09152@smc.vnet.net>

Your command gives a solution with Mathematica 5.2 on my Windows XP box.

On 2/24/07, pradeep <pradeep_bsb at yahoo.com> wrote:
> Hi all
> i have this rather innocuous looking NDSolve command thats crashing the
> mathematica kernel,
> NDSolve[{y'[x]==Min[s[x]+Sin[x],Cos[x]-s[x]],y[0]==0,s[x]==x^2},{y,s},{x,0,3}]
>
> If i were to substitute s[x] in this equation with x^2 and then try solving,
> i get an answer, if i assign s[x] in advance and try solving it, i still get
> an answer but the nature of the algorithm followed by NDSolve doesnt allow
> it to take s[x] as a dependent variable and still have it occur inside the
> Min function! i find that weird!
> Someone have an explanation??
> thanks in advance!
> Pradeep
> p.s. also note the that the nature of my application is such that i'd like
> to solve this bunch of equations in a single shot without assignment
> statements hence i dont have use for the two approaches that i mentioned
> worked.
>
>
>
>


-- 
http://chris.chiasson.name/


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