Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: I can't find the log of a negative number

  1. Feb 14, 2012 #1
    1. The problem statement, all variables and given/known data
    there is an equation:


    2. Relevant equations

    3. The attempt at a solution
    I know that log need to be used to find x. but I can't find the log of a negative number,,
  2. jcsd
  3. Feb 14, 2012 #2


    User Avatar
    Homework Helper

    Re: Logarithms

    And you cannot raise a positive number base to any real number exponent to get a negative power. So the answer is "no solution," unless the problem is a typo. Or, was this a part of a larger problem?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook