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Gogeta007
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Homework Statement
L{tcos(t)}
Homework Equations
Using the laplace transform find the equation.
The Attempt at a Solution
I already have a really long answer. . .I was just wondering if someone can explain this:
Another method (appart from using integration by parts multiple times) was mentioned by my professor, he said to take the partial with respect to s of the integral, which will then just leave the partial laplace transform of cos(t) which can be found trough tables
I remember he explained it but now that I think about it it doesn't make sense:
L {t cos(t)} = (int)infinity0 e-stt cos(t)dt
then you can take the partial with respect to s (d/ds) of that integral, and yo uwould end up with
d/ds [L{cost}] = d/ds [s/(s^2+1)]
cans omeone explain?
I remember he mentioned the potential function