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non linear regression with 3 equations

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Pooh
Pooh am 2 Jul. 2011
Kommentiert: Walter Roberson am 7 Jun. 2020
I have y1=k1(x1), y2=k2(x2), and y3=k3(x3) they are in ODE form I would like to fit my data, (y1,x1), (y2,x2), and (y3,x3) and find k1, k2, and k3? please help!! for non linear fiting, any method would be OK.

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you
you am 21 Nov. 2011
you may try another software named 1stOpt or Auto2Fit, it is easy for ODE fit.
  2 Kommentare
huazai2020
huazai2020 am 7 Jun. 2020
What is the difference between 1stOpt or Auto2Fit?
Walter Roberson
Walter Roberson am 7 Jun. 2020
No difference. Auto2Fit was renamed to 1stOpt . The publisher appears to be 7D-soft

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