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How to fit like-elliptical funcion?

• To: mathgroup at smc.vnet.net
• Subject: [mg51530] How to fit like-elliptical funcion?
• From: kras at iwm.fhg.de (Andriy Krasowsky)
• Date: Thu, 21 Oct 2004 22:20:49 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Hallo everybody,

does anyone knows how to fit an equation like

(x/P1)**a + (y/P2)**b = 1

on data which are in the first quadrant? P1, P2, a, b are to fit.

Thanks a lot in advance

Andriy