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1-Visitor
Oct 15, 2014 8:04 AM UTC
Solved

why minerr() cannot work ?

I wanna estimate k0, n, and k in the ODEs, but cannot let Minerr() run in my calculating sheet.

but flexPDE can give a reasonable answer

see the attached picture:

question.png

Werner_E
Werner_EAnswer
25-Diamond I
Oct 15, 2014 9:05 AM UTC

Main error was that the interval for odesolve was just up to 1000, but one of the values in tau.exp which you then feed into the resulting functions was 1500.

Minor errors are a typo in the variable name tau.exp (extra period at the and of the name) and the definition of the range t which should be tau.

6 replies

Werner_E
Werner_E25-Diamond IAnswer
25-Diamond I
Oct 15, 2014 9:05 AM UTC

Main error was that the interval for odesolve was just up to 1000, but one of the values in tau.exp which you then feed into the resulting functions was 1500.

Minor errors are a typo in the variable name tau.exp (extra period at the and of the name) and the definition of the range t which should be tau.

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FanCG1-VisitorAuthor
1-Visitor
Oct 15, 2014 9:33 AM UTC

Thank you very much, esp. my "minor" error you pointed out!!!!!!

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1-Visitor
Oct 15, 2014 1:04 PM UTC

...And in Given/Odesolve block must be C.A(tau)^n but not C.A(tau)^2.

See in attached file.

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