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 input a user defined function for nonlinear fit

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T O P I C    R E V I E W
blackfool Posted - 03/18/2005 : 12:04:30 PM

Origin Version (Select Help-->About Origin6.0):
Operating System:winxp
Ive been struggling several weeks with inputting a user defined function for a nonlinear fitting. My function is Y=integrate{p3*(p1/2ð)/[(p2-x)^2-(p1/2)^2]*(cos p2)^4}*dp2, the constrain of the integration is from x -ð/2, to x+ð/2. X is the independant var., and y is the dependant var., p1, p2, p3 are the three parameters.

if anyone knew how to input this functioin into origin for a nonlinear fitting, please help me out! Great thanks!!
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easwar Posted - 03/18/2005 : 5:33:09 PM
Please don't post same issue in multiple forums.
See http://www.originlab.com/forum/topic.asp?TOPIC_ID=3812

Easwar
OriginLab

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