Author Topic: Question regarding P3 on TT  (Read 400 times)

kevin

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Question regarding P3 on TT
« on: October 28, 2020, 03:28:15 AM »
for some problem 3 we choose y1 = Ae^t and sometimes we choose y1 = Bte^t (just like the question below) How do we know when to choose which term for y1?
« Last Edit: October 28, 2020, 03:32:38 AM by kevin »

YuyingC

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Re: Question regarding P3 on TT
« Reply #1 on: October 29, 2020, 07:18:49 AM »
When we choose y1=Ae^t and the result is 0 regardless of A, then we need to choose y1=Ate^t.

Yuanting Wu

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Re: Question regarding P3 on TT
« Reply #2 on: October 29, 2020, 10:10:44 AM »
The letters are used to help you find the particular solution. The reason why different letters are used is to avoid duplication.