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clwei
Joined: 12 Sep 2016 Posts: 6
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Posted: Thu Oct 13, 2016 1:18 am Post subject: How to use Arbitrary fit to fit y=ln(1+a*x)/a |
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Dear David,
We know that the Arbitrary fit can allows us to specify a function with unkown parameters. But Does it work when using to fit the logarithm equation? for example y=ln(1+a*x)/a, or how to fit the data with y=ln(1+a*x)/a. Thanks for your time!
clwei  |
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David Site Admin
Joined: 25 Nov 2006 Posts: 1954 Location: Chapel Hill, NC
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Posted: Thu Oct 13, 2016 3:05 pm Post subject: |
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It will. However, the ln function is called log, so use the expression
log(1+a*x)/a
I'm using the math convention of log = natural log and log10 is the 10 based log. There is also a log2 for the 2 based log.
David |
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clwei
Joined: 12 Sep 2016 Posts: 6
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Posted: Fri Oct 14, 2016 3:35 am Post subject: |
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Thank you David!
clwei |
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