Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding limit

  1. Oct 30, 2011 #1
    I spent alot thinking of this but can't fingure out how to find the limit as it approach x=64
    Plz need help :)

    F(x) = (sqrt(x)-8)/((x)^(1/3)-4)

    find f(x) lim x->64

    also this question -

    lim x-->0 ((x+1)^(1/3)-1)/((x+1)^(1/4)-1)

    Thanks in advance
     
  2. jcsd
  3. Oct 30, 2011 #2

    lurflurf

    User Avatar
    Homework Helper

    Change variables to the lowest common denominator and factor and cancel
    (sqrt(x)-8)/((x)^(1/3)-4) ->(y3-23)/(y2-22)
    where y=x^(1/6)
    ((x+1)^(1/3)-1)/((x+1)^(1/4)-1)=(y4-14)/(y3-13)
    where y=(x+1)^(1/12)
     
  4. Oct 30, 2011 #3
    Thanks :D ! I though bout this way but i didnt know wat to put y as
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Finding limit
  1. Limit Problem (Replies: 1)

  2. Limit Cycle (Replies: 1)

  3. Limit of derivative (Replies: 4)

Loading...