Results 1 to 5 of 5

Math Help - Derivative Step Through

  1. #1
    Newbie
    Joined
    Sep 2012
    From
    United States
    Posts
    6

    Derivative Step Through

    Can someone please help step me through the derivative of:

    1/sqrt(2+x)

    I'm rustier than I thought!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor MarkFL's Avatar
    Joined
    Dec 2011
    From
    St. Augustine, FL.
    Posts
    1,988
    Thanks
    734

    Re: Derivative Step Through

    Hint: write the function as:

    f(x)=(x+2)^{\small{\frac{1}{2}}}

    Now use the power rule for differentiation.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,801
    Thanks
    1691
    Awards
    1

    Re: Derivative Step Through

    Quote Originally Posted by MarkFL2 View Post
    Hint: write the function as:

    f(x)=(x+2)^{{\frac{1}{2}}}
    Now use the power rule for differentiation.
    It needs to be f(x)=(x+2)^{{-\frac{1}{2}}}
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor MarkFL's Avatar
    Joined
    Dec 2011
    From
    St. Augustine, FL.
    Posts
    1,988
    Thanks
    734

    Re: Derivative Step Through

    D'oh! Indeed it does!
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Sep 2012
    From
    United States
    Posts
    6

    Re: Derivative Step Through

    Thanks guys for the new perspective! Much easier now =)
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 8
    Last Post: May 18th 2012, 10:33 PM
  2. Replies: 4
    Last Post: September 26th 2011, 01:09 PM
  3. Replies: 4
    Last Post: April 6th 2010, 12:47 PM
  4. Replies: 5
    Last Post: February 22nd 2010, 01:41 PM
  5. Replies: 2
    Last Post: November 16th 2008, 06:55 PM

Search Tags


/mathhelpforum @mathhelpforum