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Mathematics 7 Online
OpenStudy (anonymous):

Please help me find the Laplace transform of xe^x

OpenStudy (anonymous):

do you know the formula? It is going to be a integration by parts problem

OpenStudy (anonymous):

Yes I know that but somehow I miss the integration...

OpenStudy (anonymous):

Im going to try to work it out

OpenStudy (anonymous):

The result is 1/(1-p)^2 It gave me 1/(1-p) plus an integer to solve

OpenStudy (anonymous):

did you remember to cancel terms in your substitution?

OpenStudy (anonymous):

How so?

OpenStudy (anonymous):

when you combine terms use u sub

OpenStudy (anonymous):

No I didn't substitute anything.integrated by parts

OpenStudy (anonymous):

bah, i goofed it sorry

OpenStudy (anonymous):

\[\int\limits_{0}^{\infty}te^{t(1-s)} = t(\frac{1}{1-s}e^{t(1-s)}) - \int\limits_{0}^{\infty}\frac{1}{1-s}e^{t(1-s)}\]

OpenStudy (anonymous):

How did yo become to this?

OpenStudy (anonymous):

I solved the rest of the integer and didn't get the right answer that is 1/s^2

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