Results 1 to 2 of 2

Math Help - Corrected the error 4,5,6

  1. #1
    Super Member dhiab's Avatar
    Joined
    May 2009
    From
    ALGERIA
    Posts
    541

    Corrected the error 4,5,6

    Corrected the error and explanation of :

    4 ) x real number :
    5 ) In complexe number, this equation :
    have a singel resolution
    6 ) x real number :
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor alexmahone's Avatar
    Joined
    Oct 2008
    Posts
    1,074
    Thanks
    7
    4) \sqrt{x^2(x+1)}=|x|\sqrt{x+1}

    5) x^3=-\frac{27}{8}
    x^3+\frac{27}{8}=0
    (x+\frac{3}{2})(x^2-\frac{3}{2}x+\frac{9}{4})=0
    x=-\frac{3}{2} or x=\frac{3}{4}(1+i\sqrt3) or x=\frac{3}{4}(1-i\sqrt3)

    6) x=1 \implies x^2=1
    However, x^2=1 \implies x=1 or x=-1
    Last edited by alexmahone; June 14th 2009 at 11:50 PM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: December 10th 2009, 11:48 PM
  2. Corrected the error 7,8,9
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 15th 2009, 07:00 AM
  3. Corrected the error : 1,2,3
    Posted in the Algebra Forum
    Replies: 3
    Last Post: June 15th 2009, 03:55 AM
  4. Replies: 0
    Last Post: April 1st 2009, 05:22 AM
  5. Abstract Algebra corrected
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: April 22nd 2008, 09:17 AM

Search Tags


/mathhelpforum @mathhelpforum