Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (asylum15):

Inverse laplace transform question

OpenStudy (asylum15):

\[F(s) = \frac{ 10 }{ (s+2)^4 }\]

OpenStudy (asylum15):

Hi Zepdrix!

zepdrix (zepdrix):

Hey! :) Grrr I can't remember how to do these specific transforms.. with the exponent on the outside >;c gimme few minutes maybe I can figure it out.

OpenStudy (asylum15):

It's not really solving it man, I just want to ask

OpenStudy (asylum15):

You know how you have an S value and an a value?

OpenStudy (asylum15):

The answer to this is \[\frac{ 5 }{ 3 } . t^3 . e^{-2t}\]

OpenStudy (asylum15):

The step before that final answer is: 10/6 inverse laplace of (3!/3^4)

OpenStudy (anonymous):

sorry idk but i thing it

OpenStudy (asylum15):

How do you know what S is? How does s+2 become a single term?

OpenStudy (turingtest):

from the table here, it fits the form of #23 http://tutorial.math.lamar.edu/Classes/DE/Laplace_Table.aspx

zepdrix (zepdrix):

So are you asking a more fundamental question like: Why does the laplace of an exponential turn into 2 terms in the denominator?\[\Large \mathscr{L}(e^{at})\quad=\quad \frac{1}{s-a}\]

OpenStudy (asylum15):

Let me show you

OpenStudy (loser66):

can I say something?

OpenStudy (asylum15):

|dw:1385670410435:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!