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Tri equation

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  • 11-11-2004 9:59pm
    #1
    honeymonster
    Registered Users Posts: 601 ✭✭✭


    2x + 3y - z = 4
    x - 4y + 2z = 5
    0x + y -2z = 3

    Can someone solve this for me please. (Using the matrix row reduction procedure if possible.)

    Cheers,

    Stevo


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    #2
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,814 Mod ✭✭✭✭Capt'n Midnight


    honeymonster wrote:
    2x + 3y - z = 4
    x - 4y + 2z = 5
    0x + y -2z = 3

    Can someone solve this for me please. (Using the matrix row reduction procedure if possible.)

    Cheers,

    Stevo
    No one is going to do your home work for you , especially if you haven't demonstrated any effort on your part.

    And it's an easy one - adding the bottom two terms gives...
    2x +5y + 0z =8


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    #3
    Pherekydes
    Registered Users Posts: 16,115 ✭✭✭✭Pherekydes


    Capt'n Midnight wrote:
    No one is going to do your home work for you , especially if you haven't demonstrated any effort on your part.

    And it's an easy one - adding the bottom two terms gives...
    2x +5y + 0z =8

    Gives x - 3y = 8 (where did you learn to add? Hope it wasn't in LCC)


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    #4
    ecksor
    Moderators, Social & Fun Moderators Posts: 10,501 Mod ✭✭✭✭ecksor


    Explanation of Gaussian elimination here: http://www.boards.ie/vbulletin/showthread.php?t=121020

    Row reduction is essentially the same procedure with a different notation (which you're probably used to).


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    #5
    joc_06
    Closed Accounts Posts: 1,376 ✭✭✭joc_06


    Ah man come one, you can definitely do this.
    Always tell yourself that and keep trying, you'll get there


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