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anonymous

  • one year ago

limit n tends to infinity for f (n)= (a^n + b^n)/(a^n - b^n)

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  1. Empty
    • one year ago
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    Is there any extra info about what a or b are?

  2. anonymous
    • one year ago
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    oh yes a> b> 1

  3. anonymous
    • one year ago
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    I'd assume they're real constants

  4. anonymous
    • one year ago
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    I tried factorising and I tried series expansions quite stuck since yesterday

  5. ganeshie8
    • one year ago
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    divide \(a^n\) top and bottom, then let \(t = b/a\)

  6. anonymous
    • one year ago
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    Thanks. Gosh I was being ridiculous. This seems so easy. Thanks

  7. ganeshie8
    • one year ago
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    yw :) are you getting 1 ?

  8. anonymous
    • one year ago
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    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.

  9. ganeshie8
    • one year ago
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    Haha it wouldn't be fun if that guessing part is not there !

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spraguer (Moderator)
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