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Math Help - solve my limit problem

  1. #1
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    solve my limit problem

    Calculate lim of〖xe^(-x) 〗when (x→∞ ) using an appropriate rule and proves that it exist and it is equals to zero.
    Help me solving this problem!
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  2. #2
    A Plied Mathematician
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    Clarification: do the weird brackets around xe^(-x) mean anything?
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  3. #3
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    nope, sorry for that. the question is...
    Calculate lim of [xe^(-x)] when (x→∞ ) using an appropriate rule and proves that it exist and it is equals to zero.
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  4. #4
    Grand Panjandrum
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    Quote Originally Posted by Salman91 View Post
    nope, sorry for that. the question is...
    Calculate lim of [xe^(-x)] when (x→∞ ) using an appropriate rule and proves that it exist and it is equals to zero.
    Use L'Hopitals rule after rewriting as:

    \displaystyle \lim_{x\to \infty}\dfrac{x}{e^x}

    CB
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