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Sunny_3158971-Visitor
1-Visitor
July 22, 2021
Question

Minimize function

Hi,

I am trying to find the local minimum of a function using Minimize function in Mathcad 15. I would like to use the Levenberg-Marquardt algorithm. However, I am unable to select this option from the menu, see the image below. 

Please let me know if it is poosible with Minimize function.

Sunny_0-1626915004727.png

 

Many thanks

S

 

3 replies

LucMeekes23-Emerald IV
23-Emerald IV
July 22, 2021

From Mathcad (11) Help. I suspect Mathcad 15 will be little different:

"Conjugate gradient method for solving

The Conjugate Gradient method is one of the nonlinear methods to use with the find, minerr, minimize, and maximize functions.

"

Means that the Conjugate gradient method can be used for Minimize.

"Levenberg-Marquardt

The iterative Levenberg-Marquardt method can be used during the solving process called by find, or minerr.

"

Means that the LM method canNOT be used for Minimize.

 

Success!
Luc

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    VladimirN24-Ruby IV
    24-Ruby IV
    July 22, 2021

    Mathcad 15: 

     

    Pic-1.png

     

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