Results 1 to 6 of 6

Math Help - inverse derivative

  1. #1
    Super Member
    Joined
    Oct 2006
    Posts
    679
    Awards
    1

    inverse derivative

    Thanks for the Help!
    Attached Thumbnails Attached Thumbnails inverse derivative-51.gif  
    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 qbkr21 View Post
    Thanks for the Help!
    umm, you use the same formula and method i told you earlier.

    \left( f^{-1} \right)'(5) = \frac {1}{f' \left( f^{-1}(5) \right)}

    you were given all the pieces, now plug them in where they should go
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Oct 2006
    Posts
    679
    Awards
    1

    Re:

    Quote Originally Posted by Jhevon View Post
    umm, you use the same formula and method i told you earlier.

    \left( f^{-1} \right)'(5) = \frac {1}{f' \left( f^{-1}(5) \right)}

    you were given all the pieces, now plug them in where they should go
    But one of the problems I am having with this particular question is that there isn't an f(x) function to work with. I had that exact setup on my paper, but I am wondering about how I would get f'.

    Thanks,

    -qbkr21
    Follow Math Help Forum on Facebook and Google+

  4. #4
    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 qbkr21 View Post
    But one of the problems I am having with this particular question is that there isn't an f(x) function to work with. I had that exact setup on my paper, but I am wondering about how I would get f'.

    Thanks,

    -qbkr21
    f(4) = 5 \implies f^{-1}(5) = 4

    we are also told that f'(4) = f' \left( f^{-1}(5) \right) = \frac {2}{3}

    that's all the information we need for our formula, right?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Super Member
    Joined
    Oct 2006
    Posts
    679
    Awards
    1

    Re:

    Thanks!
    Attached Thumbnails Attached Thumbnails inverse derivative-52.gif  
    Follow Math Help Forum on Facebook and Google+

  6. #6
    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 qbkr21 View Post
    Thanks!
    that's it!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. derivative of the inverse
    Posted in the Calculus Forum
    Replies: 1
    Last Post: January 28th 2010, 12:09 PM
  2. Derivative of Inverse
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 28th 2009, 12:00 AM
  3. Inverse and derivative
    Posted in the Math Challenge Problems Forum
    Replies: 3
    Last Post: August 10th 2009, 07:58 PM
  4. Inverse Derivative Help
    Posted in the Calculus Forum
    Replies: 6
    Last Post: January 25th 2009, 03:37 PM
  5. plz help inverse derivative
    Posted in the Calculus Forum
    Replies: 1
    Last Post: December 8th 2006, 02:18 AM

Search Tags


/mathhelpforum @mathhelpforum