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MathGroup Archive 2007

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Re: a problem about NDSolve and NIntegrate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg79973] Re: a problem about NDSolve and NIntegrate
  • From: ben <benjamin.friedrich at gmail.com>
  • Date: Fri, 10 Aug 2007 01:39:46 -0400 (EDT)
  • References: <f9emog$lpq$1@smc.vnet.net>

Dear Lynn,

please provide a short, but self-contained
code example of your problem.

Bye
Ben

On 9 Aug., 11:28, lynn <lynn0... at gmail.com> wrote:
> Hello,
>
> I'm tring to solve a diffrential equation with
>
> its upper boundary as a variable.
>
> and then I want to integrate it, and define
>
> it as a funcion with two variable.
>
> However, I don't know why it doesn't work at the second step.
>
> my equation is as following,
>
> f[c_?NumberQ]:=y[x]/.NDSolve[{eqn,y[0]==1,y'[0]==0},y,{x,0,c},MaxSteps-
>
> >10000][[1]]
>
> n[w_NumberQ,c_NumberQ]:=NIntegrate[c*y[x]*(r-w)],{r,w,1}]
>
> function f works well, however there's some problem in funcion n,
>
> and it's confused me for a long time...,
>
> thanks for your help!!
>
> Best Regards!!
> Lynn




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