Results 1 to 5 of 5

Math Help - Finding the Minimum & Maximum

  1. #1
    Member
    Joined
    Apr 2009
    Posts
    96

    Finding the Minimum & Maximum

    So here's where I am now. I need to find the minimum of the following function:
    C = 400,000 - 170x + 0.030x^2

    I have absolutely no idea where to begin.

    On this one, I need the maximum:
    (-(4/9)x^2)+(24/9)x+8

    Again, don't know what to do here.

    Then there's this other problem that wants me to find the "price that will yield the maximum revenue" and the maximum revenue itself:

    R(p) = -12p^2 + 156p

    It firsts asks me to find the revenue earned for each price given, which were $4, $6, and $8. So the earned revenue would be:
    R ($4) = $432
    R ($6) = $504
    R ($8) = $480

    Back to finding the price that will give the maximum revenue, I chose $6, because, according to those prices and revenue earned, $6 brought in the most, at $504, but these two were wrong. So I don't know what to do.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    Quote Originally Posted by BeSweeet View Post
    So here's where I am now. I need to find the minimum of the following function:
    C = 400,000 - 170x + 0.030x^2

    I have absolutely no idea where to begin.

    On this one, I need the maximum:
    (-(4/9)x^2)+(24/9)x+8

    Again, don't know what to do here.

    Then there's this other problem that wants me to find the "price that will yield the maximum revenue" and the maximum revenue itself:

    R(p) = -12p^2 + 156p

    It firsts asks me to find the revenue earned for each price given, which were $4, $6, and $8. So the earned revenue would be:
    R ($4) = $432
    R ($6) = $504
    R ($8) = $480

    Back to finding the price that will give the maximum revenue, I chose $6, because, according to those prices and revenue earned, $6 brought in the most, at $504, but these two were wrong. So I don't know what to do.
    Find the vertex and that will either be you max or min
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Apr 2009
    Posts
    96
    So... I would do that by... Factoring?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    Nope do the same like you were doing with the other problems you posted up, complete the square. When you get to Calculus you will learn an easier way to do this lol. I'll show you the calculus way if you like. It easy to learn
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member
    Joined
    Apr 2009
    Posts
    96
    Do you have AIM or anything? I'm literally going crazy.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 12
    Last Post: May 20th 2011, 12:56 PM
  2. Replies: 1
    Last Post: March 20th 2010, 05:32 AM
  3. Finding Relative Maximum and Minimum
    Posted in the Calculus Forum
    Replies: 6
    Last Post: July 5th 2009, 08:45 PM
  4. Finding the maximum and minimum
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 9th 2008, 08:25 PM
  5. Replies: 0
    Last Post: November 19th 2007, 01:51 AM

Search Tags


/mathhelpforum @mathhelpforum