[Octave-bug-tracker] [bug #56069] [octave forge] (symbolic) Laplace transform of sin(w*t) gives wrong value

[anonymous]

Follow-up Comment #4, bug #56069 (project octave):

Mike and Colin,
 
Thank you for your suggestions and recommendations.  I will go with


laplace(sin(w*t), t, s)


That works!

When I encountered the problem, I couldn't figure out for laplace(sin(w*t))
how the symbolic processor knew which variable was the integration variable
and which was the complex frequency -- it didn't occur to me that there would
be an alphabetical rule that caused my "a" example to work differently than my
"w" example.  I like the recommendation you gave --- it's clean and it
explicitly sets the proper variables.

Thank you for your help. 

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