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

Homework Help: Limit problem

  1. Jan 23, 2009 #1
    1. The problem statement, all variables and given/known data
    lim
    x-> -1
    x3-6x2+11x - 6
    x3-4x2+19x + 14

    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jan 23, 2009 #2
    Have you tried anything yet? Where does the expression tend to as x goes to -1?
     
  4. Jan 23, 2009 #3

    AEM

    User Avatar

    Where is your attempt at a solution? I know calculus can be confusing when you start, but this problem seems pretty straight forward.
     
  5. Jan 23, 2009 #4
    well, i used the method of substitution and if my algebra is correct i came out with -6/7 but in my solutions manual that answer is incorrect, then i try to factor the top but it didn't seem to factor out. although, i haven't took college algebra in awhile, so i am a little rusty on my factoring.
     
    Last edited: Jan 23, 2009
  6. Jan 23, 2009 #5

    rock.freak667

    User Avatar
    Homework Helper

    What did the answer manual say?
     
  7. Jan 23, 2009 #6
    -2/3 , opps i wrote the problem down wrong so it is actually
    x3-6x2+11x - 6
    x3+4x2-19x + 14
     
    Last edited: Jan 23, 2009
  8. Jan 23, 2009 #7

    AEM

    User Avatar

    Copying mistakes will get you every time!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook