Help fitting Exponential curves
- To: mathgroup at smc.vnet.net
- Subject: [mg28969] Help fitting Exponential curves
- From: Todd <tcs3a at virginia.edu>
- Date: Wed, 23 May 2001 01:54:34 -0400 (EDT)
- Organization: University of Virginia
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
I am looking to fit some exponential curves to a form of
P=Po*e^(-K*t) where K and Po are values I need. The P and t I have.
I'm working with mathematica 4.1 and I can read the data and plot it fine
but it doesn't want to give me reasonable fits.
So I guess my question is how would you go about getting the Fitting to
work on fitting a Pre-Exponential and an exponential variable. If I type
PeakFit[x_] = Fit[Peak, Exp[-x], x]
it only gives me a Pre-exponential, however if I type.
PeakFit[x_] = Fit[Log[Peak], {-x,Log[x]}, x]
It just doesn't like that. Could Someone Please point me in the right
direction.
Thank you,
Todd
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