anonymous
  • anonymous
limit n tends to infinity for f (n)= (a^n + b^n)/(a^n - b^n)
Mathematics
schrodinger
  • schrodinger
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Empty
  • Empty
Is there any extra info about what a or b are?
anonymous
  • anonymous
oh yes a> b> 1
anonymous
  • anonymous
I'd assume they're real constants

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anonymous
  • anonymous
I tried factorising and I tried series expansions quite stuck since yesterday
ganeshie8
  • ganeshie8
divide \(a^n\) top and bottom, then let \(t = b/a\)
anonymous
  • anonymous
Thanks. Gosh I was being ridiculous. This seems so easy. Thanks
ganeshie8
  • ganeshie8
yw :) are you getting 1 ?
anonymous
  • anonymous
obviously. Easy peas. I dislike this bit about calc...There's this approach that should strike you immediately. I didn't pick up on the hint from the a and b conditions.
ganeshie8
  • ganeshie8
Haha it wouldn't be fun if that guessing part is not there !

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