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C
Cornel19-Tanzanite
19-Tanzanite
January 23, 2023
Question

Determinat of a Matrix Mathcad Prime 8 Strange Result

  • January 23, 2023
  • 1 reply
  • 4524 views

Hello,

 

CornelBejan_0-1674463934154.png

CornelBejan_1-1674463944323.png

 

Mathematica result:

CornelBejan_3-1674464026036.png

 

Maple result:

CornelBejan_4-1674464068837.png

 

Mathcad 11 result:

CornelBejan_5-1674464192543.png

 

Mathcad 15 result:

CornelBejan_6-1674464370601.png

 

Mathcad Prime 8 result:

CornelBejan_2-1674463970608.png

 

Why does Mathcad Prime give such a result when calculating the determinant of that matrix? Is this some bug from prime? or?


Mathcad Prime 8 file attached.

1 reply

W
Werner_E25-Diamond I
25-Diamond I
January 23, 2023

In Maple you have a typo - first row, second column

C
Cornel19-TanzaniteAuthor
19-Tanzanite
January 23, 2023

CornelBejan_0-1674479226785.png

Did not influence pretty much...

Anyway, strange how Mathcad Prime calculates this determinant...

W
Werner_E25-Diamond I
25-Diamond I
January 23, 2023

still quite a large difference compared to the other solution! Look at the coefficients of s and s^2. All other programs get 4.2 and 11.3 but the result of Maple significantly differs!

 

In P8 you may try modifiers like "collect,s", "expand" or even just "simplify".

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