Results 1 to 3 of 3

Math Help - MOre Multiplicative inverses

  1. #1
    Super Member
    Joined
    Feb 2008
    Posts
    535

    MOre Multiplicative inverses

    New Problem:

    Find Multiplicative inverses of i and 3i.

    I'm just not sure what to do??
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member Gamma's Avatar
    Joined
    Dec 2008
    From
    Iowa City, IA
    Posts
    517
    inverses are unique.
    1=i^4=i i^3
    3i \frac{i^3}{3}=1

    NOTE: i^3=i^2 i=(-1)i=-i
    Follow Math Help Forum on Facebook and Google+

  3. #3
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by jzellt View Post
    New Problem:

    Find Multiplicative inverses of i
    this is 1/i

    and 3i.
    this is 1/(3i)

    now see here
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: June 15th 2011, 09:14 PM
  2. Replies: 2
    Last Post: March 8th 2010, 06:25 PM
  3. Prove their own multiplicative inverses
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: March 3rd 2010, 12:25 AM
  4. Multiplicative inverses in field extensions
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: February 18th 2010, 09:10 PM
  5. Multiplicative Inverses
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: October 19th 2008, 06:46 AM

Search Tags


/mathhelpforum @mathhelpforum