Thread: Mathematics - Factoring Fractional Exponents

  1. #16
    S Sang-drax's Avatar
    Join Date
    May 2002
    Göteborg, Sweden
    Quote Originally Posted by Psychlow
    Personally, I'd think -4 should be listed as an answer on that equation. Last I checked, -4 was part of the real number set.
    -4 is a real number, yes, but you need complex numbers to make x^(-1/2) defined for negative values of x.

    It was arguments like this that introduced the complex numbers. Obviously, the first equation has a root -4, but we cannot insert x=-4 without complex numbers.

    EDIT: The book is still wrong.
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  2. #17
    essence of digital xddxogm3's Avatar
    Join Date
    Sep 2003
    I know I said I would put the proof back in the post, but for all my searching I can not find the proof. I'm glad you all figured it out with out me putting that back in. Thanks again for everybody's input.
    Psychlow - good to see you finally posting on the best forum around.
    Now if you could only get away from writing in VB.
    ;0) hehehehe
    Just Joking. VB has a purpose, I haven't found it yet, but it does.
    "Hence to fight and conquer in all your battles is not supreme excellence;
    supreme excellence consists in breaking the enemy's resistance without fighting."
    Art of War Sun Tzu

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. Replies: 9
    Last Post: 07-11-2006, 04:28 AM
  2. Mathematics (Factoring and Logarithms)
    By xddxogm3 in forum A Brief History of
    Replies: 24
    Last Post: 11-27-2004, 06:09 PM
  3. non-interger exponents
    By brane_sail in forum C++ Programming
    Replies: 5
    Last Post: 10-06-2003, 12:41 AM
  4. For loop and exponents
    By TrazPFloyd in forum C++ Programming
    Replies: 5
    Last Post: 10-15-2002, 05:19 AM
  5. Calculating a fractional value.
    By subdene in forum C++ Programming
    Replies: 4
    Last Post: 10-12-2002, 10:06 PM