Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1996
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1996

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

Search the Archive

Re: differential equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4424] Re: differential equation
  • From: "Kevin J. McCann" <kjm at ravel.jhuapl.edu>
  • Date: Mon, 22 Jul 1996 00:29:25 -0400
  • Organization: Johns Hopkins University Applied Physics Lab, Laurel, MD, USA
  • Sender: owner-wri-mathgroup at wolfram.com

Poon Ming Yan (pmhui) wrote:
...
> I have a differential equation to solve, which is
> 
> f''(x) + f(x)( A*cos[B*x] - K ) == 0
> 
> where A,B and K are constants.
> 
> Is it a mathieu equation ??
...

Check out Abramowitz and Stegun Handbook of Mathematical Functions ("Big
Red") Chapter 20:

Mathieu DE:

		y'' + [a - 2q cos(2x)]y=0

is the canonical form.

Kevin

-- 



email:		kjm at ravel.jhuapl.edu

snailmail:	Kevin J. McCann
		Johns Hopkins University APL
		Johns Hopkins Road
		Laurel MD 20723-6099

phone:		(301) 953-5476
fax:		(301) 953-5950

---------------------------------------------------------------------
The difference between science and the fuzzy subjects is that science
requires reasoning while those other subjects merely require
scholarship.
                -- Robert Heinlein
---------------------------------------------------------------------

==== [MESSAGE SEPARATOR] ====


  • Prev by Date: a question on ContourPlot
  • Next by Date: Re: Revealing HiddenSurfaces
  • Previous by thread: Re: a question on ContourPlot
  • Next by thread: differential equation