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: Max, Min Function Value.

  1. May 28, 2010 #1
    1. The problem statement, all variables and given/known data

    Find max and min value of the function

    2. Relevant equations

    attached.

    3. The attempt at a solution

    no graph, because roots aren't real numbers.
     

    Attached Files:

  2. jcsd
  3. May 28, 2010 #2

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    As you've found, there are no real values of [itex]x[/itex] where [itex]f'(x)=0[/itex]...what does that tell you about the existence of local maxima/minima? Are there other types of extrema? Where might they occur?
     
  4. May 28, 2010 #3
    no idea! need imaginary graph? maybe there isn't any max or min.. so the exercices question is meanless.
     
  5. May 28, 2010 #4

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    You need to read the section n your textbook on global extrema.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook