Skip to main content
M
MW_1072788610-Marble
10-Marble
November 14, 2023
Question

Fiding unknowvalues from an equation

  • November 14, 2023
  • 1 reply
  • 1418 views

Hi
I am trying to find 4 unknows from an equation. But its giving me "0" as a solution. I have eight know variables in the equation, while I want to find the rest of 4 unknowns. 
Your help would be highly appreciated. I have attached the sheet of Mathcad 9. 

Best,
Waqas
MW_10727886_0-1699928171000.png

MW_10727886_1-1699928204101.png

 

 

1 reply

W
Werner_E25-Diamond I
25-Diamond I
November 14, 2023

Just one equation but four variable to solve for? Honestly?

How can you expect a unique solution???

You have a lot of freedom and the all-zero solution which Prime provides is as good as any. Its definitely a solution.

To see all solutions you have to add "fully".

Prime suggests that you can chose any arbitrary value for the first three variables and then lets you know how to calculate the remaining one (L2).

Werner_E_0-1699929552829.png

You may use "substitute" for a clearer result

Werner_E_1-1699929713039.png

 

Not sure what exactly you expected as solution?

M
MW_1072788610-MarbleAuthor
10-Marble
November 14, 2023

Thanks for getting back to me.

May be I am (was) not thinking correctly. The solution I am looking for is the 4 unknowns, and I want to express these 4 unknowns in the form of equations. Let me attach the main sheet pf the problem.
I have attached the sheet .

MW_10727886_0-1699938365899.png

 

W
Werner_E25-Diamond I
25-Diamond I
November 14, 2023

This time you seem to have three equations (assuming that I1,2,3 are known) but again you are looking for more than three variables, so again there in a degree of freedom and no unique solution.

Terms & ConditionsAccessibility statement