1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Limits 2

  1. Jan 18, 2009 #1
    1. The problem statement, all variables and given/known data
    limit of (3x^3+2)/ sqrt(x^4-2) as x approaches to minus infinity

    2. Relevant equations

    3. The attempt at a solution
    I tried to solve and I came up with limit of (3x^3+2)/ sqrt(x^4-2) as x approaches to minus infinity is plus infinity but when I checked the answer key, it is minus infinity can someone please tell me?
  2. jcsd
  3. Jan 18, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi chemic_23! :smile:
    Easy-peasy :tongue2: …

    for large negative x, the top is always negative, while the bottom is always positive …

    so the limit has to be negative. :smile:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Limits 2
  1. Limit that equals e^2 (Replies: 4)

  2. Limit with 2 variables (Replies: 7)

  3. Limit of sequence (2) (Replies: 6)

  4. 2 radicals in a limit? (Replies: 11)