Results 1 to 3 of 3

Math Help - Logarithmic equations

  1. #1
    Newbie bickitrainer's Avatar
    Joined
    Nov 2008
    From
    Australia
    Posts
    5

    Logarithmic equations

    Hello everyone,

    I just joined this forum. I'm having a little difficulty with these questions:

    Write the following as logarithmic equations (in base 10) in simplest form:

    a) K = 20 3b2
    b) M = ab2
    ddddddc3
    And is there a way to enter numbers in superscript and subscript? I had to copy and paste from microsoft word.
    Any help would be appreciated, I have my exams next week and am doing a variety of questions.
    Thank you very much.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Banned
    Joined
    Aug 2008
    Posts
    530
    Quote Originally Posted by bickitrainer View Post
    Hello everyone,

    I just joined this forum. I'm having a little difficulty with these questions:

    Write the following as logarithmic equations (in base 10) in simplest form:

    a) K = 20 3b2
    b) M = ab2
    ddddddc3
    And is there a way to enter numbers in superscript and subscript? I had to copy and paste from microsoft word.
    Any help would be appreciated, I have my exams next week and am doing a variety of questions.
    Thank you very much.
    a) K = 20 \times \sqrt[3]{b^2}

    K = 20 \times b^{\frac{2}{3}}

    <br />
\log_{10} K = \log_{10} 20 + \log_{10} \left(b^{\frac{2}{3}}\right)

    <br />
\log_{10} K = \log_{10} 20 + \frac{2}{3} \log_{10} b

    b) M = \frac{ab^2}{c^3}

    <br />
\log_{10} M = \log_{10} (ab^2) - \log_{10} (c^3)

    <br />
\log_{10} M = \log_{10} a + \log_{10} (b^2) - \log_{10} (c^3)

    <br />
\log_{10} M = \log_{10} a + 2\log_{10} b - 3\log_{10} c

    Did you get it ???
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie bickitrainer's Avatar
    Joined
    Nov 2008
    From
    Australia
    Posts
    5
    Thank you very much! I understand now. But I need to know how you were able to type all of that in lol.

    They were worth 6 marks altogether, I didn't know that was all you had to do.

    I have some more questions:

    Write the following equastions without logarithms:

    a) LogP = 2 + logx

    b) LogM = 1.477 - x
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Logarithmic equations
    Posted in the Algebra Forum
    Replies: 2
    Last Post: October 20th 2011, 01:12 PM
  2. Logarithmic equations
    Posted in the Algebra Forum
    Replies: 3
    Last Post: February 26th 2011, 04:22 AM
  3. Logarithmic Equations
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: September 17th 2009, 06:56 PM
  4. Logarithmic equations
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: July 31st 2009, 11:27 AM
  5. Help with Logarithmic Equations
    Posted in the Algebra Forum
    Replies: 3
    Last Post: November 24th 2008, 04:45 PM

Search Tags


/mathhelpforum @mathhelpforum