Results 1 to 4 of 4

Math Help - The Derivative

  1. #1
    Newbie
    Joined
    Sep 2008
    Posts
    5

    The Derivative

    If f(x)=x+6, compute f(3) and f'(3).

    Can someone show me how to do this?
    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 VX-1 View Post
    If f(x)=x+6, compute f(3) and f'(3).

    Can someone show me how to do this?
    just plug in 3 for x in the function and then plug in 3 for x in the derivative.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2008
    Posts
    5
    Sorry I didn't clarify-- how would I go about figuring out the derivative in the second one?

    Would f'(3)=1+6=7 ?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member 11rdc11's Avatar
    Joined
    Jul 2007
    From
    New Orleans
    Posts
    894
    Use the power rule

    nx^p = pnx^{p-1}

    n being a constant, so your derivative

    f'(x)=1
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. contuous weak derivative $\Rightarrow$ classic derivative ?
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: April 22nd 2011, 03:37 AM
  2. Replies: 0
    Last Post: January 24th 2011, 12:40 PM
  3. [SOLVED] Definition of Derivative/Alt. form of the derivative
    Posted in the Calculus Forum
    Replies: 2
    Last Post: September 23rd 2010, 07:33 AM
  4. Derivative Increasing ==> Derivative Continuous
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: February 23rd 2010, 11:58 AM
  5. Replies: 2
    Last Post: November 6th 2009, 03:51 PM

Search Tags


/mathhelpforum @mathhelpforum