Can someone explain to me how the Laplace transform works? Done a lot of research but end up getting confused.. Help needed!!!

Question

anonymous · Answer

converts data in time domain to frequency domain and vice versa

anonymous · Answer

and how would u use this? Like what's the formula to convert for example $$\cos(kt)$$

anonymous · Answer

Here are some basic transforms you can use, http://image.mathcaptain.com/cms/images/83/laplace-tranform-formulas-list.png

anonymous · Answer

Thank you so much!!

anonymous · Answer

You're welcome

amistre64 · Answer

there was an MIT video with some old guy in it on youtube ... loved it

amistre64 · Answer

http://www.youtube.com/watch?v=hqOboV2jgVo you might want to start at part one, or visit the MIT site with the videos, this guy is awesome :)

anonymous · Answer

Thanks a lot. How long will it take to go through it? my exam is on Monday and I have still got to cover so many topics.

amistre64 · Answer

multiply both sides by e^(-s) and take a derivaitve with respect to t i beleive,  the details are a little fuzzy

amistre64 · Answer

http://tutorial.math.lamar.edu/Classes/DE/LaplaceTransforms.aspx this site has very good examples and solutions, and is very readable. It will do you more good at the moment than my memory can :)

anonymous · Answer

Thank you. I will go through it now :)

amistre64 · Answer

just saw something to help jar my mind:

$$F(s)=\int_{0}^{inf}f(t)e^{-st}~dt$$

amistre64 · Answer

its actually the page before that link that gives the details ...

anonymous · Answer

Oh okay. I don't have any knowledge on Laplace. I just want to know how to answer the questions. So should I look at the first page or should the examples given be enough to answer some laplace transform questions?

amistre64 · Answer

if you have a specific problem in mind, it might help to run thru it ... i might even need the practice :)

anonymous · Answer

Hmm I'll give it a go then.