how to fit data with this specified functional form?
- To: mathgroup at smc.vnet.net
- Subject: [mg67495] how to fit data with this specified functional form?
- From: "newbie" <CPPandC at gmail.com>
- Date: Wed, 28 Jun 2006 03:52:11 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Dear all,
I wanna fit my data with the function x^b where b is the parameter to
be determined. But mathematica just return me:
Input[2]:= FindFit[data, x^b, b,x]
"The Jacobian is not a matrix of numbers at {b} = {1.`}"
Output[2]:= {b -> 1.}
I tried to fit another data with the same function x^b, this problem
dissapears, so I guess that's due to my data is quite linear?
but...How to avoid this problem and get a proper fit with the function
x^b ? Thanks for any ideas!
Best Regards. Bryan