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differential equation

• To: mathgroup at smc.vnet.net
• Subject: [mg43680] differential equation
• From: "Andrew Lindsay" <andrewl at global.net.au>
• Date: Mon, 29 Sep 2003 01:47:56 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Dear MathGroup,

I would also like to ask a question at this time also.  I am trying to solve
the following differential equation, but am not sure how to go about it.

E''(z) + E'(z)*H*(1/ra - 1/z) + E(z)*(2*H/z^2 - B) = 2*H/z^3 * Integral z to
L, E(t) dt.

Where H, B and ra are all constants.

I can supply the actual derivation of the equation in pdf form to anyone
that is interested.

The equation is used to solve attenuation along a pipeline.

Best regards

Andrew

• Follow-Ups:
  • Re: differential equation
    • From: Daniel Lichtblau <danl@wolfram.com>