[Maxima] ilt()

[Barton Willis]

----Frank Palazzolo -----

> For whatever reason, I can't get
>ilt() to evaluate, even in a trivial case:
>
>ilt( s/(s+1), s, t);
>
>(This doesn't seem to do anything)

This inverse Laplace transform involves a Dirac delta function--Maxima
just gives up on such transforms. The function ilt isn't completely
broken:

(%i4) ilt( s/(s+1), s, t);
(%o4) ILT(s/(s+1),s,t)
(%i5) ilt( 1/(s+1), s, t);
(%o5) %e^(-t)

Barton