automatic substitution of symbolic results

On 4/25/2010 10:17:59 AM, hsbhela wrote:
>Hi,
>
>I am facing problem in
>automatic substitution of
>symbolic results. I would like
>to know how in mathcad the
>symbolic result obtained from
>previous expression can
>automatically be used in the
>next steps. Problem is more
>clearly stated with a simple
>example in the attached
>mathcad file.
>
>Thank you,
>
>Bhela
______________________________

You are using the word "substitution" instead of "assign-define". That's the way it works or known to work. It has to be this way because in general the definition will carry parameters that have nothing to do with the symbolic, like in the DE Laplace solver, thus not losing the generality of the setup.

Your example [if the one catched from Rich] is a non sense. You must realise that if you reinject the solution of one variable vs the other, the back substitution returns the value you have solved for. Mathcad 11 and probably 14 does exactly what you are asking for. You can plug manually, the solved argument. But that is totally useless to plug back the solving argument as it will return the value solved for.
The general case works like it has always been working. A CAS like Mathcad obeys the rules that apply and not any rules that don't apply. The rule you are trying to apply is not a rule.

jmG

On 4/25/2010 10:17:59 AM, hsbhela wrote:
>Hi,
>
>I am facing problem in
>automatic substitution of
>symbolic results. I would like
>to know how in mathcad the
>symbolic result obtained from
>previous expression can
>automatically be used in the
>next steps. Problem is more
>clearly stated with a simple
>example in the attached
>mathcad file.
>
>Thank you,
>
>Bhela
_____________________________

You can always try to use the "Symbolic compactor". This example does not compact really because the result is too short. In many instances it does well, like the DE example in black.

jmG

Please see attached. I have not done this much, but the symbolic result is available this way.

Rich
http://www.downeastengineering.com/