Results 1 to 4 of 4

Math Help - Natural log problem

  1. #1
    Newbie
    Joined
    Mar 2009
    From
    Rockford, Michigan
    Posts
    16

    Natural log problem

    I've solved this problem a couple different ways and come up with different answers and I have had a couple other people come up with different answers. What log basic am I missing?

    Given that ln a = 5 and ln b = 7 evaluate the following:

    ln a2 be2
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member arpitagarwal82's Avatar
    Joined
    Feb 2009
    Posts
    103
    Is it
    \ln a^2 \ln be^2

    or

    \ln a^2 \ln (be)^2

    Assuming its \ln a^2 \ln be^2

    = 2\ln a ( \ln b + 2\ln e)
    = 2\ln a ( \ln b +2)
    2 x 5 ( 7 + 2)
    2 x 5 x 9
    90
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Mar 2009
    From
    Rockford, Michigan
    Posts
    16
    Problem is presented as:



    ln a^2be^2 no spaces between variables
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Member arpitagarwal82's Avatar
    Joined
    Feb 2009
    Posts
    103
    then its
    \n a^2be^2

    = \ln a^2 + \ln b + \ln e^2

    = 2\ln a + \ln b + 2\ln e

    = 2 x 5 + 7 + 2 x 1
    = 19
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Natural Log problem, please can you help?
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: May 30th 2011, 12:28 PM
  2. Natural log problem
    Posted in the Algebra Forum
    Replies: 1
    Last Post: May 18th 2011, 02:56 AM
  3. Natural Log Problem
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: October 19th 2010, 05:48 PM
  4. Can this problem be solved? (Natural Log)
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: September 1st 2010, 03:33 PM
  5. Natural log problem
    Posted in the Calculus Forum
    Replies: 4
    Last Post: November 6th 2009, 07:20 PM

Search Tags


/mathhelpforum @mathhelpforum