Results 1 to 2 of 2

Math Help - Equation of a tangent line

  1. #1
    Newbie
    Joined
    Oct 2011
    Posts
    3

    Equation of a tangent line

    I'm having a little trouble in my cal class and I'm trying to see if i can get some help. not really wanting the answer just some clarification on a problem.
    the question is
    - Find the equation of the line tangent to the graph of f(x)= x^1/2 at x=4. Express answer in "y=mx+b" form. Use fractions, not decimals. do NOT use the limit definition of derivative.

    My question is what definition can i use thats not the limit definition?? i haven't figured out what she means yet...
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Oct 2008
    Posts
    1,035
    Thanks
    49

    Re: Equation of a tangent line

    i.e. use the power rule to get the derivative.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: January 12th 2011, 03:38 PM
  2. Equation of the Tangent Line
    Posted in the Calculus Forum
    Replies: 1
    Last Post: August 10th 2010, 08:46 PM
  3. equation of tangent line
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: April 28th 2010, 05:16 AM
  4. Equation of tangent line
    Posted in the Calculus Forum
    Replies: 3
    Last Post: March 12th 2010, 12:52 AM
  5. equation of the tangent line
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 16th 2007, 02:47 PM

Search Tags


/mathhelpforum @mathhelpforum