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Limit calculus

  1. May 6, 2009 #1
    I was reviewing my concepts of limits and didnt manage to solve this one. Probably is simple but im not managing to get it.

    Limit (2^x * (x + 1)) / (1 - 3^x)
    +oo

    i can see the answer is 0 but cant manage to get it...

    Thx in advance,
     
  2. jcsd
  3. May 6, 2009 #2

    quasar987

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    Recall that [itex]a^x=e^{\ln(a)x}[/itex].
     
  4. May 6, 2009 #3
    yea, i remember that one...but still no luck in refactoring to a possible 0 result.
     
  5. May 6, 2009 #4
    Divide top and bottom by 2^x.
     
  6. May 7, 2009 #5
    Got it... divide by 2^x and then divid again by x.

    Thx people ;)
     
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