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Jacobian Computation - Mathcad 11

Cornel
17-Peridot

Jacobian Computation - Mathcad 11

Hello,

What is the syntax to determine the Jacobian of a matrix in Mathcad 11?

CornelBejan_0-1624281504007.png

(Mathcad 11 File)


Thanks.

1 ACCEPTED SOLUTION

Accepted Solutions
LucMeekes
23-Emerald III
(To:Cornel)

The Jacob() function that Werner shows is not implemented in Mathcad 11. It may have been added in Mathcad 14 or 15.

However former Mathcad Expert Tom Gutman implemented a function that produces the Jacobian, here's an example:

LucMeekes_0-1624285400749.png

A Mathcad 11 file with all function required to run the Jacobian is attached.

 

Success!
Luc

View solution in original post

5 REPLIES 5
Werner_E
24-Ruby V
(To:Cornel)

From Mathcads help:

Werner_E_0-1624282819365.png

So here's the workaround using your function:

Werner_E_1-1624282866282.png

 

 

Cornel
17-Peridot
(To:Werner_E)

But I don't mean in Mathcad 15, but in Mathcad 11.
In Mathcad 15 I know it works.

Mathcad 15:

CornelBejan_1-1624284951126.png

CornelBejan_3-1624285164292.png

 


Mathcad 11:

CornelBejan_4-1624285200761.png

 

 

Should it have the same result in Mathcad 11 as in Mathcad 15 with the same syntax?
Or is it done differently in Mathcad 11?

 

LucMeekes
23-Emerald III
(To:Werner_E)

What does the 3rd parameter to the function Jacob do?

 

Luc

 

Ah, found it (thanks to Prime help). It specifies the number of variables for the Jacobian.

But that is implicit through the (length of) the second parameter... So still...?

LucMeekes
23-Emerald III
(To:Cornel)

The Jacob() function that Werner shows is not implemented in Mathcad 11. It may have been added in Mathcad 14 or 15.

However former Mathcad Expert Tom Gutman implemented a function that produces the Jacobian, here's an example:

LucMeekes_0-1624285400749.png

A Mathcad 11 file with all function required to run the Jacobian is attached.

 

Success!
Luc

Cornel
17-Peridot
(To:LucMeekes)

Aha.
Good.
It looks like the implementation you attached to Mathcad 11 for finding the Jacobian works.
Thank you.

 

 

CornelBejan_0-1624287435585.png

 

Thanks.

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