Results 1 to 6 of 6
Like Tree2Thanks
  • 1 Post By Plato
  • 1 Post By MarkFL

Math Help - Matrice question

  1. #1
    Senior Member
    Joined
    Sep 2012
    From
    Sweden
    Posts
    250
    Thanks
    6

    Matrice question

    Hi idk if i have missunderstand but serious i thought u cant ab on this but they did in the answer....how do i do AB?!?!?!
    Attached Thumbnails Attached Thumbnails Matrice question-image.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,605
    Thanks
    1573
    Awards
    1

    Re: Matrice question

    Quote Originally Posted by Petrus View Post
    Hi idk if i have missunderstand but serious i thought u cant ab on this but they did in the answer....how do i do AB?!?!?!
    A_{2,2}\cdot B_{2,3}=C_{2,3}.

    \left( {\begin{array}{rr}   3 & { - 5}  \\   2 & 3  \\ \end{array} } \right) \cdot \left( {\begin{array}{rrr}   { - 7} & 4 & 0  \\   2 & { - 5} & 1  \\ \end{array} } \right) = \left( {\begin{array}{rrr}   { - 31} & {37} & ?  \\   ? & ? & ?  \\ \end{array} } \right)
    Thanks from Petrus
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Sep 2012
    From
    Sweden
    Posts
    250
    Thanks
    6

    Re: Matrice question

    Facit says Matrice question-image.jpg
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,605
    Thanks
    1573
    Awards
    1

    Re: Matrice question

    Quote Originally Posted by Petrus View Post
    Facit says

    I don't have a clue what you mean by?
    This is an Englsh language forum.
    The OP contains a very poor image not in English.
    But it is clear what the matrices A~\&~B equal.

    The OP then asks how to find A\cdot B~.
    I answered that question. If you don't find my reply useful, please ignore it.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Senior Member
    Joined
    Sep 2012
    From
    Sweden
    Posts
    250
    Thanks
    6

    Re: Matrice question

    Sorry i did missunderstand the quest and ut answer was not really worthless u did just teach me u can multiplicate it! Ty alot that Will help if i get any quest like that anoying that My book on swedish:/ cant change it
    edit: what does OP means?
    Follow Math Help Forum on Facebook and Google+

  6. #6
    MHF Contributor MarkFL's Avatar
    Joined
    Dec 2011
    From
    St. Augustine, FL.
    Posts
    1,988
    Thanks
    734

    Re: Matrice question

    Hello Petrus,

    OP can mean either "original post" (the first post) or "original poster" (the person who began the topic).

    It will be easier for people to give you help if you take the time to translate the problem into English and preferably typeset the mathematical statements in the problem using \LaTeX.

    Also, try to refrain from using "text-talk" abbreviations in your posts. These are fine for informal one-on-one messages in private, but when trying to communicate publicly, you should use full words, so that those who aren't familiar with these type of abbreviations aren't left wondering what you are saying.
    Thanks from Petrus
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Matrice
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: November 1st 2012, 01:37 PM
  2. Matrice
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 1st 2012, 01:37 PM
  3. Matrice - Ax=b A^-1b =x
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: March 9th 2010, 06:46 PM
  4. matrice
    Posted in the Algebra Forum
    Replies: 0
    Last Post: February 28th 2010, 01:49 PM
  5. matrice 2
    Posted in the Algebra Forum
    Replies: 4
    Last Post: August 19th 2009, 05:38 AM

Search Tags


/mathhelpforum @mathhelpforum