Results 1 to 2 of 2

Math Help - wierd derivative question

  1. #1
    Junior Member
    Joined
    Oct 2007
    Posts
    56

    wierd derivative question

    If
    f(4) = 8, g(4) = 2, f(4) = 1, g(4) = 3, f '(4) = 10, g '(4) = 12, f '(4) = 6, and g '(4) = 2, find H '(4) where H(x) = g( f(x) 3x ) .
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by kwivo View Post
    If
    f(4) = 8, g(4) = 2, f(4) = 1, g(4) = 3, f '(4) = 10, g '(4) = 12, f '(4) = 6, and g '(4) = 2, find H '(4) where H(x) = g( f(x) 3x ) .
    By the Chain Rule:

    H(x) = g(f(x) - 3x)

    \Rightarrow H'(x) = g'(f(x) - 3x) \cdot (f'(x) - 3)

    now just plug in numbers, and you're done
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Wierd integral problem
    Posted in the Calculus Forum
    Replies: 3
    Last Post: November 24th 2009, 03:12 PM
  2. Wierd reationship in spheres
    Posted in the Calculus Forum
    Replies: 2
    Last Post: March 4th 2009, 04:59 AM
  3. Wierd differential equation
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: January 3rd 2009, 06:53 AM
  4. Wierd trig question
    Posted in the Trigonometry Forum
    Replies: 0
    Last Post: May 1st 2008, 11:13 AM
  5. Wierd Algebra Problem
    Posted in the Algebra Forum
    Replies: 1
    Last Post: May 7th 2007, 04:22 PM

Search Tags


/mathhelpforum @mathhelpforum