1. Not finding help here? Sign up for a free 30min 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!

Yay, more limits!

  1. Oct 6, 2004 #1
    I've can't seem to get this:

    [tex]\lim_{\substack{x\rightarrow 1}} \frac {\sqrt{x} -
    x^2} {1 - \sqrt{x}} [/tex]

    I know it equals 3... I got that from the using numbers close to 1 method and from the dervative of the top over the derivative of the bottom method... trouble is, I don't think that's how he wants us to find the answer because we haven't learned the derivative method yet. :yuck: any help would be awesome.
     
  2. jcsd
  3. Oct 6, 2004 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Set:
    [tex]a=\sqrt{x}[/tex]
    Then:
    [tex]\frac{\sqrt{x}-x^{2}}{1-\sqrt{x}}=a\frac{1-a^{3}}{1-a}[/tex]
    Does that help?
     
  4. Oct 6, 2004 #3
    YES! Oh sweet, thanks a lot!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Yay, more limits!
  1. One more limit ? (Replies: 1)

  2. Help w/ 1 more limit (Replies: 9)

  3. Sliding Blocks (yay) (Replies: 2)

  4. Ohm's Law Yay (Replies: 6)

  5. More torque yay (Replies: 1)

Loading...