Re: Basic Laplace Transforms

*To*: mathgroup at smc.vnet.net*Subject*: [mg20511] Re: [mg20422] Basic Laplace Transforms*From*: "Tomas Garza" <tgarza at mail.internet.com.mx>*Date*: Wed, 27 Oct 1999 02:05:06 -0400*Sender*: owner-wri-mathgroup at wolfram.com

Don Metcalf [dmetcalf at fishinternet.com.au] wrote: > I am fairly new to Mathematica and can't understand why the program won't > evaluate simple laplace transforms. I am entering in the example exactly > from the help file and still it doesn't work. It just outputs what I have > typed in. Can someone help. If I am doing something wrong, the user > interface sure is not user friendly. It is, provided you do what you're supposed to. You must first load the LaplaceTransform AddOn : In[1]:= <<Calculus`LaplaceTransform` In[2]:= LaplaceTransform[Sin[t], t, s] Out[2]= 1/(1 + s^2) If you called LaplaceTransform before loading the AddOn (in the same session), be sure to remove it before calling it again in order to avoid shadowing problems: In[3]:= Remove[LaplaceTransform] Tomas Garza Mexico City