Re: Mathematica not simplifying Laplace transforms
- To: mathgroup at smc.vnet.net
- Subject: [mg61371] Re: Mathematica not simplifying Laplace transforms
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Mon, 17 Oct 2005 02:29:37 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <diskoi$m9b$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Roger wrote: > 2) This might be related, how do I define the domain of a variable? > Like making the variable "t" a positive real number. Hi Roger, You can try the clause *Assumptions* (although that does not change anything in this case): In[1]:= LaplaceTransform[Exp[t]*f[t], t, s, Assumptions -> t > 0] Out[1]= LaplaceTransform[E^t*f[t], t, s, Assumptions -> t > 0]