help: laplace transform in differential of another variable

"jacipe.maxima" <jacipe.maxima at gmail.com> writes:
>> When I performed the command: diff(y.laplace(t,s),x) in sage, it
>> came out: D[0](laplace)(y(x, t), t, s)*D[0](y)(x, t).  Since sage
>> use Maxima in the process, it is surely able to be solved here.
>> Can someone help me?

I'm not entirely sure what you're trying to do here. The Maxima laplace
command takes three arguments: an expression and the two variables to
transform between. Your example just gives two. Also, multiplication of
numbers is written with "*" rather than "."  (although I don't know
whether that will have caused any problems here).

Since this is a mailing list for Maxima rather than for Sage, we can
probably help you more if you tell us:

  (1) A command you tried to run in Maxima
  (2) The output you got
  (3) Why it's wrong (What should it have been?)

Here, at least:

  (%i1) laplace(s,t);

  Maxima encountered a Lisp error:

   invalid number of arguments: 2

  Automatically continuing.
  To enable the Lisp debugger set *debugger-hook* to nil.

So it's not really possible for us to get much further without more
detail from you.


Rupert
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