Results 1 to 2 of 2

Math Help - Logarithmic Differentiation to find y'

  1. #1
    Newbie
    Joined
    Oct 2009
    Posts
    6

    Logarithmic Differentiation to find y'

    Use Logarithmic Differexntiation to find y' of the following:

    f(x) = (e^x^2)(tanx)(x^3 - 1)
    (x^4 - 3x)^2 (x-4)^5


    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Oct 2005
    From
    Earth
    Posts
    1,599
    Quote Originally Posted by valeriegriff View Post
    Use Logarithmic Differexntiation to find y' of the following:

    f(x) = (e^x^2)(tanx)(x^3 - 1)
    (x^4 - 3x)^2 (x-4)^5


    Consider ln[f(x)]. By using ln(a/b)=ln(a)-ln(b) and ln(ab)=ln(a)+ln(b) you can break ln[f(x)] down into a bunch of smaller terms. Now differentiate each term implicitly and remember (ln(y)) ' = (1/lny) * y'. Gather up all the y' terms and eventually you'll get your answer. Good luck.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 6
    Last Post: November 23rd 2010, 01:56 PM
  2. logarithmic differentiation
    Posted in the Calculus Forum
    Replies: 5
    Last Post: April 14th 2010, 01:41 AM
  3. Replies: 1
    Last Post: February 3rd 2010, 06:14 PM
  4. logarithmic differentiation
    Posted in the Calculus Forum
    Replies: 5
    Last Post: February 20th 2009, 01:59 AM
  5. logarithmic differentiation
    Posted in the Calculus Forum
    Replies: 3
    Last Post: April 26th 2008, 07:48 PM

Search Tags


/mathhelpforum @mathhelpforum