Results 1 to 4 of 4

Math Help - finding limits

  1. #1
    Junior Member
    Joined
    Sep 2009
    Posts
    66

    finding limits

    1. Find the limit. (If you need to use - or , enter -INFINITY or INFINITY.)


    2. Find the limit. (If you need to use - or , enter -INFINITY or INFINITY.)


    lost
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Dec 2008
    Posts
    319
    We may divide the numerator and denominator of the first limit by u^4 and of the second limit by -x^3.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2009
    Posts
    66
    when i divide by -x^3 in number 2 i get a 0 in the denominator, but that is wrong. i also got number 1 wrong again. i have 1 more chance for each question
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by kyleu03 View Post
    when i divide by -x^3 in number 2 i get a 0 in the denominator, but that is wrong. i also got number 1 wrong again. i have 1 more chance for each question
    If you showed all your work we would have a better idea of where you're going wrong.

    As for the second, I'd be inclinded to substitute t = -x and then consider \lim_{t \to + \infty} \frac{\sqrt{4t^6 + t}}{-t^3 + 1}. Now divide the numerator and denominator by t^3 and then take the limit. Again, if you show all your working first your mistakes (if any) can be pointed out.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. finding limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 27th 2009, 01:48 PM
  2. Help Finding Limits!!!
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: February 6th 2009, 05:48 PM
  3. Finding limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: September 9th 2008, 09:25 AM
  4. finding limits
    Posted in the Calculus Forum
    Replies: 4
    Last Post: September 7th 2008, 06:27 PM
  5. Finding limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: April 14th 2008, 01:19 PM

Search Tags


/mathhelpforum @mathhelpforum