Re: LaplaceTransform bug?
- To: mathgroup at smc.vnet.net
- Subject: [mg86303] Re: [mg86241] LaplaceTransform bug?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 8 Mar 2008 05:39:33 -0500 (EST)
- Reply-to: hanlonr at cox.net
$Version 6.0 for Mac OS X x86 (64-bit) (February 7, 2008) $ReleaseNumber 2 Clear[a, b, t, s]; LaplaceTransform[E^(a t) E^(b t), t, s] // InputForm -(a + b - s)^(-1) LaplaceTransform[E^((a + b) t), t, s] // InputForm (-a - b + s)^(-1) % == %% // Simplify True Bob Hanlon ---- janus <januswesenberg at gmail.com> wrote: > As far as I can tell, the bug illustrated by the example below has not > been reported in this group before. > Does anybody know wether it has been fixed in v6.0.1? > > In[1]:= $Version > > Out[1]= "6.0 for Mac OS X x86 (32-bit) (April 20, 2007)" > > In[2]:= Clear[a, b, t, s]; > LaplaceTransform[E^(a t) E^(b t), t, s] // InputForm > > Out[3]//InputForm= > E^(b*t)/(-a + s) > > In[4]:= Clear[a, b, t, s]; > LaplaceTransform[E^((a + b) t), t, s] // InputForm > > Out[5]//InputForm= > (-a - b + s)^(-1) >