Unknown error when solving DEs

Forum|Forum|14 years ago
November 25, 2011
2 replies
4926 views

Hi all,

I am a mathcad-noob, started using it today. I use ptc's eLearning library to get to know the software. However, in the section about solving differential equations I have run into a problem:

As before, I do everything like it is written in the eLearning article. But when I want to solve the DE using odesolve, I get an unknown error: dae%_initial%_condition%_error (See attached pic for more info).

Who can help me? Couldn't find anything of the sort here or anywhere else on the web.

Thanks a lot, Felix

Other

Best answer by ValeryOchkov

Sorry, I can not find an error in your sheet. May be the point is in lables of variables and functions. I can only rewrite your sheet without errors.

I think that tools for solving differential equations in Mathcad Prime 1.0 are very... unpolished. And I do not recommend using them. We have to wait what will happen in the new version of Mathcad Prime.

V

ValeryOchkov

24-Ruby IV

See in the attach the solution. And send me pease your sheet not only the picture. I would like to check this error.

1_ode-mcdx.zip

F

flix

Author

1-Visitor

Hi Valery,

thanks for your reply! On your sheet it works, on mine it doesn't...as requested you find attached my sheet.

Cheers, Felix

1_Mathcad_Problem-mcdx.zip

V

ValeryOchkov

Answer

24-Ruby IV

Sorry, I can not find an error in your sheet. May be the point is in lables of variables and functions. I can only rewrite your sheet without errors.

I think that tools for solving differential equations in Mathcad Prime 1.0 are very... unpolished. And I do not recommend using them. We have to wait what will happen in the new version of Mathcad Prime.