Results 1 to 7 of 7

Math Help - what would it mean by .................................

  1. #1
    Newbie
    Joined
    Apr 2010
    Posts
    23

    Smile what would it mean by .................................

    |A * A|....... A={12,13,1,2,7}...........................
    what does this line mean|.................................
    thanks in advance
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Mar 2010
    Posts
    37
    Quote Originally Posted by npm1 View Post
    |A * A|....... A={12,13,1,2,7}...........................
    what does this line mean|.................................
    thanks in advance
    The determinant.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,966
    Thanks
    1785
    Awards
    1
    Quote Originally Posted by npm1 View Post
    |A * A|....... A={12,13,1,2,7}...........................
    what does this line mean|.....................
    Is the question about |A\times A|?
    If it is then that stands for the number of pairs in the cross product of A with itself.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Apr 2010
    Posts
    23

    Question

    Quote Originally Posted by Plato View Post
    Is the question about |A\times A|?
    If it is then that stands for the number of pairs in the cross product of A with itself.
    would the product be ......
    12.12|13.13|1.12|
    12.13|13.12|1.13|
    12.1|13.1|1.1|
    12.2|13.2|1.2|
    12.7|13.7|1.7|.........etc then add all that up
    Follow Math Help Forum on Facebook and Google+

  5. #5
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,966
    Thanks
    1785
    Awards
    1
    Please answer the question: Is this problem about cross products?
    If it is, do you understand what a cross product is?
    If it is not about cross product, then what is it about?
    Follow Math Help Forum on Facebook and Google+

  6. #6
    Newbie
    Joined
    Apr 2010
    Posts
    23

    Question

    Quote Originally Posted by Plato View Post
    Please answer the question: Is this problem about cross products?
    If it is, do you understand what a cross product is?
    If it is not about cross product, then what is it about?
    the question is aswking this
    determine the value of this expression
    it also says that |X| denotes the number of elements in X.
    Follow Math Help Forum on Facebook and Google+

  7. #7
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,966
    Thanks
    1785
    Awards
    1
    Quote Originally Posted by npm1 View Post
    the question is aswking this
    determine the value of this expression
    it also says that |X| denotes the number of elements in X.
    Please stop sending PMs to me.
    I cannot help you if you refuse to answer a simple question.
    Follow Math Help Forum on Facebook and Google+


/mathhelpforum @mathhelpforum