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power law fit with a constant [message #88075]

Tue, 18 March 2014 19:13

suruchi
Messages: 13
Registered: September 2012

Junior Member

Could anyone suggest me how to do the fitting of the following functions:

1) A + B (x^gamma) which is a power law with a constant.

without the constant, for the power law of the form " Bx^gamma " it is easy to convert to log space and linearize the problem, that is
log(y)=log(B)+gamma*(log(x)).

2) Ax^(B+Cx) : Curved power law

Any ideas!
Please let me know if I am missing to apprehend the simple solution.

In addition, I am wondering what is the original inverted function for this
LOGSQUARE: Y = a0 + a1*alog10(x) + a2 * alog10(x)^2
Is it the curved power law? Please clarify!

Thanks

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[Message index]

		power law fit with a constant By: suruchi on Tue, 18 March 2014 19:13
		Re: power law fit with a constant By: Craig Markwardt on Tue, 18 March 2014 19:59
		Re: power law fit with a constant By: wlandsman on Wed, 09 March 2016 08:39
		Re: power law fit with a constant By: Craig Markwardt on Thu, 10 March 2016 09:40
		Re: power law fit with a constant By: wlandsman on Thu, 10 March 2016 10:25

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