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a name is required here

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a name is required here

help please...

1 ACCEPTED SOLUTION

Accepted Solutions
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Re: a name is required here

You should NOT use global assignments ( = ), but boolean equality to define the equations in your solve block. Type [CTRL =] to get those. They show as a bold equals sign ( = ).

 

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Luc

Re: a name is required here

 
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Re: a name is required here

Additional remarks:

1) You have to only use the function names without the argument parenthesis (use "C" and not "C(t)")

2) You have only 5 equations but 6 functions to solve for.

Re: a name is required here

Hi,

odesys1.jpg

Re: a name is required here

Thank you, can you attached file please?

Re: a name is required here

and why is f(t):0.5*cosh(t)??

Re: a name is required here

Hi,

you should provide the f (t); what I chose is a convenience function. I do not believe that Mathcad is able to determine f (t) as an unknown knowing only its initial condition.

Re: a name is required here

thank you 

 

but the answer is below the attached file.

 

Do you know why?

 

please..

 

 

Re: a name is required here

Hi,

If there were a further differential equation in f(t), things would change. See the following example:

odesys3.jpg

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