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: Need a clue on limits, have the answer need explanation

  1. Jun 14, 2012 #1
    I have grasped everything in the first 2 segments of my limits chapter, but somehow I am missing out on this problem.

    lim (f(x)-4)/(x-2) = 1.........find lim
    x->4 x->4 f(x)

    I am missing something very fundamental and can not find an example explanation in my text. I have the answer which is 6, but have no idea the steps to get there.

    Any help?
  2. jcsd
  3. Jun 14, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    $$lim_{x\rightarrow 4}\frac{f(x)-4}{x-2} = \frac{\lim_{x\rightarrow 4}(f(x))-4}{4-2}=1$$Does that help?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook