Results 1 to 2 of 2

Math Help - i really need help on

  1. #1
    Newbie
    Joined
    Oct 2008
    Posts
    19

    i really need help on

    i have no clue how to do this problem.

    Given a power function of the form f(x)=ax^n , with f(3)=18 and f(6)=72, find n and a
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Aug 2008
    Posts
    98
    Awards
    1
    f(x)=ax^n , with f(3)=18 and f(6)=72, find n and a

    Plug in 3 and 6 for x you get

    a3^n=18

    a6^n=72

    Solve these simultaneous equations for a and n?
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum