- #1

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Auxiliary roots: m1=-1 m2=-4

Using trial please

cant seem to work out PI with polynomial and exponential together.

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- Thread starter enosthapa
- Start date

- #1

- 9

- 0

Auxiliary roots: m1=-1 m2=-4

Using trial please

cant seem to work out PI with polynomial and exponential together.

- #2

tiny-tim

Science Advisor

Homework Helper

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(try using the X

when your RHS contains an exponential which is a solution of the LHS, it obviously

you need to multiply it by x (or x

in this case, try xe^{-x} (plus a polynomial)

- #3

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As far as i know,

if there is exponential on RHS (e

but the question has polynomial in addition so did you mean i have to add the 'PI' I would get if there was polynomial only on RHS?

sorry i m confusing u:/

- #4

tiny-tim

Science Advisor

Homework Helper

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i meant a polynomial plus a constant times xe^{-x} …

doesn't that work?

- #5

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I don't have the answer which could have been helpful. But thanks anyway.

- #6

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