- #1

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ex.

y'' + 4y' + 4y =

**t^-2***e^(-2t)

so far my guess is,

A*e^(-2t)(B*?...)

- Thread starter Kyle Parrott
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- #1

- 1

- 0

ex.

y'' + 4y' + 4y =

so far my guess is,

A*e^(-2t)(B*?...)

- #2

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

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http://tutorial.math.lamar.edu/Classes/DE/VariationofParameters.aspx

- #3

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To add to SteamKing's link, you don't even try undetermined coefficients if n is negative, because it won't work.

ex.

y'' + 4y' + 4y =t^-2*e^(-2t)

so far my guess is,

A*e^(-2t)(B*?...)

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