Re: A problem with ilaplace()

[Colin Macdonald]

On 2017-11-14 10:34 AM, Leo Baumann wrote:
> It works if the coefficient of p in the denominator of Tp2 is 1.

Thanks Leo and Doug.  I played with this a bit, it seems simply 1/poly 
with poles in left-half plane are very slow (when they should be easy). 
I filed an issue upstream with "Sympy" (which the symbolic package uses).

https://github.com/sympy/sympy/issues/13606

Feel free to follow along if you wish.  I think transforms are an area 
where Sympy is particularly poor so lots of chances to help out if you 
can spare the time!

Finally, note the value of reducing things to the simplest possible 
example---I'm playing with ilaplace(1/((p+1)(p+10)), p, t).  People are 
much more likely to help with your problem if its not full of R1, Rlast 
etc numbers.

best,
Colin