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Math Help - about limit with log plz

  1. #1
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    about limit with log plz

    hello everyone

    my sister asks me to help her to solve these limitation

    I'm a mathematics teacher but unfortunately, I forgot those rules to solve them since I was student

    so could u plz help me

    the question : simplify and solve :

    1) lim (n^2)/(n*log(n^3))

    2) lim n*log(n^3)/n*log(n)

    3) lim n*log(n^3)/n

    all of them when the limit goes to infinity

    thanks



    AFAF
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  2. #2
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    Re: about limit with log plz

    Quote Originally Posted by afafazaid View Post
    I'm a mathematics teacher but unfortunately, I forgot those rules to solve them since
    That scares me to death.

    Quote Originally Posted by afafazaid View Post
    1) lim (n^2)/(n*log(n^3))
    2) lim n*log(n^3)/n*log(n)
    3) lim n*log(n^3)/n
    all of them when the limit goes to infinity
    \frac{n^2}{n\cdot\log(n^3)}=\frac{n}{3\log(n)}

    \frac{n\log(n^3)}{n\log(n)}=3

    \frac{n\log(n^3)}{n}=3\log(n)
    Last edited by Plato; April 20th 2012 at 04:58 PM.
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  3. #3
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    Re: about limit with log plz

    thanks a lot

    I'm really appreciated ur gr8 job

    when I read ur answer I remembered the solution and understood the steps

    u r wonderful

    AFAF
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  4. #4
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    Re: about limit with log plz

    It is really sad that a teacher, of any subject, cannot do simple mathematics or write a grammatically correct sentence.
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  5. #5
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    Re: about limit with log plz

    Quote Originally Posted by HallsofIvy View Post
    It is really sad that a teacher, of any subject, cannot do simple mathematics or write a grammatically correct sentence.
    1. Most people do not write grammatically on the internet, especially when writing very quickly. If the OP is a teacher, then his/her time is probably very limited.

    2. It's a sad fact, but unfortunately there is a massive shortage of mathematics teachers, so a significant proportion (in Australia it's about 30%, and it's probably similar in other countries) of teachers who are teaching mathematics classes without being trained in mathematics. I'm sure the OP is trying his/her best, and at least he/she is asking for help. Cut him/her some slack.
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