Results 1 to 2 of 2
Like Tree1Thanks
  • 1 Post By ibdutt

Math Help - Help please

  1. #1
    Newbie
    Joined
    Apr 2013
    From
    Sydney
    Posts
    17
    Thanks
    2

    Help please

    Hello all,

    I have a question, "What is the least value of c if 2x2 - 12x + c is never negative?"

    I'm guessing that means c must be found when 2x2 - 12x + c = 0, but I'm not sure what kind of answer I'm supposed to get.

    thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jul 2012
    From
    INDIA
    Posts
    822
    Thanks
    209

    Re: Help please

    I think we can reason it out like this. We want
    2x^2 - 12 x + c >=0
    2x(x - 6 ) >= - c
    That is it. For all those values of c for which the above inequality holds the function will never be negative.
    we can't get definite value because we have one inequality and two variables.
    Thanks from Caddym89
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum