[Date Index]
[Thread Index]
[Author Index]
Re: NDSolve with NIntegrate where Integral is a function of x
*To*: mathgroup at smc.vnet.net
*Subject*: [mg127377] Re: NDSolve with NIntegrate where Integral is a function of x
*From*: Bob Hanlon <hanlonr357 at gmail.com>
*Date*: Fri, 20 Jul 2012 03:54:53 -0400 (EDT)
*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com
*Delivered-to*: mathgroup-newout@smc.vnet.net
*Delivered-to*: mathgroup-newsend@smc.vnet.net
You did not specify g[x,t] so I could not verify that this will work.
You also need to pay closer attention to syntax.
h[x_?NumericQ] := Integrate[g[x, t], {t, 0, Infinity}]
NDSolve[{y'[x] == f[x]*h[x], y[0] == 0.04}, y[x], {x, 0, 10}]
Bob Hanlon
On Thu, Jul 19, 2012 at 3:50 AM, Nikthecrab <nikhil.dexter at gmail.com> wrote:
> I am trying to solve a differential equation using NDSolve . It is of the form:
>
> NDSolve[{y'[x]=f(x)*Integrate[g(x,t),{t,0,infinity}],y[0]=0.04},y[x],{x,0,10}]
>
> here f is a function of x and g is a function of x and a dummy variable t for integration.
> The integral cannot be solved directly in terms of x.So I tried using NIntegrate.But NIntegrate requires x to be a number while NDSolve clearly has to vary x from 0 to 10. Can anyone suggest a suitable solution to this problem?
>
Prev by Date:
**Re: switching axes in Plot?**
Next by Date:
**Re: Solving Third Order differential equation using Mathematica.**
Previous by thread:
**Re: NDSolve with NIntegrate where Integral is a function of x**
Next by thread:
**Re: switching axes in Plot?**
| |