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: I really need help with this Pre Calculus problem =[

  1. Aug 21, 2011 #1
    sketch and graph
    1. y= [x][/3] +2
    2. y= squareroot x-3
    3. y= Ix-2I
    4. y= [y][/2] - 1
  2. jcsd
  3. Aug 22, 2011 #2
    If you're not sure what the graph looks like, then just plug in some numbers for x, (x=1, x=2, x=3) and then plot the points. Then just connect them with a smooth line.
  4. Aug 22, 2011 #3
    I don't actually understand your notation. What are those square brackets and "I"s?
  5. Aug 22, 2011 #4


    User Avatar

    Staff: Mentor

    I don't understand even one of these. What do the square brackets mean?

    But I'll take a stab at (2) :tongue2:

    Last edited by a moderator: Apr 26, 2017
  6. Aug 22, 2011 #5
    Yes what are the square brackets?
  7. Aug 22, 2011 #6
    I think it's pretty straight forward, albeit bizarre notation. The brackets mean nothing, and the "I...I" are supposed to be absolute value bars "|...|".
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook