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1-Visitor
December 23, 2017
Solved

Solving a bizzare equation

Can anyone help me solve this equation? I tried everything but couldn't manage it. mathcad.PNG

 

Werner_E
Werner_EAnswer
25-Diamond I
December 24, 2017

Why not use a numeric solve block?

But your function is rather beasty, being very steep and so guess value and value for CTOL are important.

Furthermore you'll notice that with th standard CTOL of  10^-3 the result is not excat (CM(R.0) != 0)

Also the used algorithm counts - only Levenberg-Marquardt will find a ssolution, Conjugate Gradient and Quasi-Newton won't.

Bild.png

4 replies

24-Ruby IV
December 23, 2017

Please attach your Mathcad worksheet (in archive file format) to the message.

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avci1-VisitorAuthor
1-Visitor
December 24, 2017

Here it is.

 

Thanks in advance.

 

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Werner_E
Werner_E25-Diamond IAnswer
25-Diamond I
December 24, 2017

Why not use a numeric solve block?

But your function is rather beasty, being very steep and so guess value and value for CTOL are important.

Furthermore you'll notice that with th standard CTOL of  10^-3 the result is not excat (CM(R.0) != 0)

Also the used algorithm counts - only Levenberg-Marquardt will find a ssolution, Conjugate Gradient and Quasi-Newton won't.

Bild.png

Translate