(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

L{tcos(t)}

2. Relevant equations

Using the laplace transform find the equation.

3. 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 doesnt make sense:

L {t cos(t)} = (int)^{infinity}_{0}e^{-st}t 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

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# Homework Help: Laplace transforms

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