anonymous
  • anonymous
use the frobenius method to solve xy''-y'+2y=0. find index "r" and recurrence relation. compute the first 5 terms(a0-a4) using the recurrence relation for each solution and index r.
Differential Equations
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@oldrin.bataku do you know this method?
anonymous
  • anonymous
Let me see...
primeralph
  • primeralph
@goalie2012 Are you very familiar with summations?

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anonymous
  • anonymous
I know that's how this problem should be solved, and I more or less know them, but I still get messed up on some of them. Like this one...
primeralph
  • primeralph
Cool, @oldrin.bataku should be able to explain it to you. I skip a lot of steps when explaining stuff like that.
anonymous
  • anonymous
$$xy''-y'+2y=0$$Observe we may rewrite this in standard form:$$y''-\frac1xy'+\frac2xy=0$$which has a very apparent singular point at \(x=0\). With a little further attention we can see it's a regular singular point.
anonymous
  • anonymous
The method of Frobenius assumes, then, a solution of the form \(y=\sum\limits_{n=0}^\infty a_nx^{r+n}\) (note our expansion about the singular point).
anonymous
  • anonymous
@oldrin.bataku I've tried what I can think of, but I'm not really sure where to go from here. I'm still getting used to and figuring these things out.
anonymous
  • anonymous
@oldrin.bataku @primeralph how do I find/get rid of the r value?
primeralph
  • primeralph
Find the constant number that shifts the power from n to n+r.
anonymous
  • anonymous
I'm trying to work it through with my book, but it's not helping. It says to find an indicial equation. still not really sure what to do...
anonymous
  • anonymous
@oldrin.bataku I'm so lost. Tried to so something and got a mess. you explained the others very well, could you explain this one to if you're still here somewhere?

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