Results 1 to 2 of 2

Math Help - trig derivative problem

  1. #1
    Member
    Joined
    Oct 2009
    Posts
    79

    trig derivative problem

    Use the equation given below to find f '' (piπ/4).
    f (x) = sec(x)
    f '' (pi/ 4) =?

    y'=secxtanx
    y"=secxtanx(tanx) + sec^2x(secx)
    = sqrt2(1)(1) + 2(sqrt2)= 3(sqrt 2)

    Help?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Calculus26's Avatar
    Joined
    Mar 2009
    From
    Florida
    Posts
    1,271
    you are correct
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig Derivative
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 9th 2010, 11:25 PM
  2. Trig Derivative Q
    Posted in the Calculus Forum
    Replies: 3
    Last Post: March 17th 2010, 05:40 PM
  3. Trig Derivative
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 18th 2009, 03:24 AM
  4. Trig Derivative Problem
    Posted in the Calculus Forum
    Replies: 1
    Last Post: January 26th 2009, 08:13 AM
  5. help with a trig derivative?
    Posted in the Calculus Forum
    Replies: 11
    Last Post: October 4th 2008, 07:22 PM

Search Tags


/mathhelpforum @mathhelpforum