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Math Help - Help!!!!!

  1. #1
    Newbie
    Joined
    Feb 2010
    Posts
    1

    Help!!!!!

    http://i46.tinypic.com/dcsmc9.jpg

    if you cant read the numbers, here they are:

    First one:

    A=
    .05 .10 .10
    .10 .15 .05
    .05 .20 .20

    D=
    50
    100
    80

    Solve the system using the open model X=AX+D or X=(I-A)^-1D
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  2. #2
    MHF Contributor
    Joined
    Dec 2007
    From
    Ottawa, Canada
    Posts
    3,102
    Thanks
    68
    Quote Originally Posted by NinjaBunny View Post
    A=
    .05 .10 .10
    .10 .15 .05
    .05 .20 .20
    D=
    50
    100
    80
    I presume above means something like this:

    5a + 10b + 10c = 5000 [1]
    10a + 15b + 5c = 10000 [2]
    5a + 20b + 20c = 8000 [3]

    [3] - [1]: 10b + 10c = 3000 ; b + c = 300

    ...and so on...
    Yes?
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