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ptc-13682881-Visitor
1-Visitor
January 14, 2010
Question

DE Laplace solvers

  • January 14, 2010
  • 1 reply
  • 2152 views
In separate sheets for easier qs style and especially for "clear var" that 14 users have reported being a problem. Try these three sheets and report to Mona if working or not. That will help the PTC team about the InvLaplace reported incorrect as per the books .

Interesting to see if it works in 14.

jmG


1 reply

A
Anonymous
January 15, 2010
Mathcad 14 needs a little help to do the inverse laplace part here.

stv
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ptc-13682881-VisitorAuthor
1-Visitor
January 15, 2010
On 1/15/2010 9:31:39 AM, stv wrote:
>Mathcad 14 needs a little help
>to do the inverse laplace part
>here.
>
>stv
___________________________________

Thanks for making it work for 14 users. The 14 Laplace algebra and the construct around a dummy [L, solve(L)] is hard to visualize. I can see it comes from an unterminated piece of work from books. The question is about all the traditional feedback and control Laplace applications, i.e: how it handles the Laplace algebra ? It you are interested and willing, I will pass something on that.

Jean
A
Anonymous
January 16, 2010
On 1/15/2010 11:28:08 AM, jmG wrote:

>>The 14 Laplace algebra and the construct
>around a dummy [L, solve(L)] is hard to
>visualize.

>Jean

nL-Y0m+msL = �(s) is just the Laplace transform of your equation nf(t)+mdf(t)/dt = q(t), where I've simply used L to represent the Laplace transform of f(t). The solve statement then solves for L.

I guess I could have written the solution directly, as you did in your original.

Not sure if this addresses your point or not!

stv
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