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1-Visitor
November 30, 2021
Question

"unable to form derivative matrix" - Error [Mathcad Prime 2.0]

  • November 30, 2021
  • 1 reply
  • 2186 views

Hi Mathcad-Community,

I am running into the following error not able to debug it. First I though, that I might have a unit mismatch but after rechecking, everything seems to be consisten so far. What is the cause for the error?

1 reply

18-Opal
November 30, 2021

Is this what you want to do?

 

muser_0-1638306096707.png

 

1-Visitor
December 1, 2021

Hi muser,

I am looking for the function phi(t). I have no clue, why the solve-block runs into a error. I think it might have to do something with the following equation, because when I remove J_Motor*2*Pi*n'(t), the solver is able to give me phi(t).

 

NS_10096872_1-1638351063116.png

 

18-Opal
December 1, 2021

What's the error?

 

muser_1-1638392646307.pngmuser_2-1638392727566.png