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From: Victor GIURGIUTIU on 17 May 2010 18:30
I am just learning how to use symbolic Laplace transform and have difficulty with the Laplace of Heaviside function with shift. Here is what I found:

1) laplace(heaviside(t) works and gives 1/s
2) laplace(heaviside(t-sym(1)) works and gives 1/(s*exp(s))
but
3) laplace(heaviside(t-a) does not work and does not give 1/(s*exp(as)) as expected. instead, it gives laplace(heaviside(t-a),t,s)

What is wrong in my approach?

Thanks in anticipation.

Victor G.
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