Results 1 to 3 of 3

Math Help - Exponential equations.

  1. #1
    Member
    Joined
    Sep 2009
    Posts
    80

    Exponential equations.

    The goal of the problem is to solve for x using logs and the given equation is this:

    2e^(3x) = 4e^(5x)

    Any help on how to solve this?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Mar 2009
    From
    Alberta
    Posts
    173
    Quote Originally Posted by Rumor View Post
    The goal of the problem is to solve for x using logs and the given equation is this:

    2e^(3x) = 4e^(5x)

    Any help on how to solve this?
    I'll start you off;

    2e^{3x}=4e^{5x}

    e^{3x}=2e^{5x}

    ln(e^{3x})=ln(2e^{5x})

    3x=ln(2)+ln(e^{5x})

    Can you take it from here?

    Keep in mind the handy rules log_{a}a=1, and log_{a}b^c=c \cdot log_{a}b
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Sep 2009
    Posts
    80
    Quote Originally Posted by Kasper View Post
    I'll start you off;

    2e^{3x}=4e^{5x}

    e^{3x}=2e^{5x}

    ln(e^{3x})=ln(2e^{5x})

    3x=ln(2)+ln(e^{5x})

    Can you take it from here?

    Keep in mind the handy rules log_{a}a=1, and log_{a}b^c=c \cdot log_{a}b
    Yes, I was able to solve it from there.

    Thank you! :]
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Exponential Equations
    Posted in the Calculus Forum
    Replies: 2
    Last Post: March 11th 2009, 04:19 PM
  2. Exponential Equations
    Posted in the Algebra Forum
    Replies: 5
    Last Post: December 11th 2008, 07:48 PM
  3. exponential equations
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 21st 2008, 01:56 PM
  4. exponential equations
    Posted in the Algebra Forum
    Replies: 7
    Last Post: November 11th 2007, 01:36 AM
  5. Exponential equations
    Posted in the Algebra Forum
    Replies: 2
    Last Post: October 27th 2007, 08:10 PM

Search Tags


/mathhelpforum @mathhelpforum