Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2009

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: I have an operator, How do I DSolve it?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96215] Re: I have an operator, How do I DSolve it?
  • From: dh <dh at metrohm.com>
  • Date: Mon, 9 Feb 2009 05:36:56 -0500 (EST)
  • References: <gmndhs$s04$1@smc.vnet.net>


Hi Aaron,

simply use:

DSolve[B[m, S][r] == 0, S[r], r]

Daniel



Aaron Fude wrote:

> Hi,

> 

> I have defined a differential operator, but what's the syntax for

> using it in DSolve?

> 

> I have the Bessel operator

> 

> B[m_, f_] := (D[f[#], {#, 2}] +

>     1/# D[f[#], {#, 1}] + (1 - m^2/#^2) f[#]) &

> 

> It's the Bessel operator for now, but I will soon replace it with a

> different one. This is for testing puposes only.

> 

> Now, how do I use it in DSolve?

> 

> So far I use

> 

> DSolve[S''[r] + 1/r S'[r] + (1 - m^2/r^2) S[r] == 0, S[r], r]

> 

> but that's not a good solution because I have to different expressions

> for the same thing. I want to used B only.

> 

> Many thanks in advance,

> 

> Aaron

> 




  • Prev by Date: Problem importing HTML with Mathematica
  • Next by Date: Re: Re: FindFit & NIntegrate
  • Previous by thread: I have an operator, How do I DSolve it?
  • Next by thread: Re: I have an operator, How do I DSolve it?