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!

Homework Help: Determine the value of b?

  1. Mar 22, 2010 #1
    1. The problem statement, all variables and given/known data
    Determine the value of b so that each limit exists.

    lim (4x^2 + 11x -3) / (x-b)

    2. Relevant equations

    3. The attempt at a solution

    I factored it to (4x-1)(x+3) / (x-b) but still not too sure what else to do.
  2. jcsd
  3. Mar 22, 2010 #2


    Staff: Mentor

    In order for the limit to exist, the discontinuity caused by dividing by x - b has to be removable. This means that there must also be a factor of x - b in the numerator.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook