Matrix Algebra

Discussion in 'School Work Help' started by Wudark, Feb 6, 2009.

  1. Wudark

    Wudark Member

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    Hello, I just learn about homogeneous system.
    And had to solve the following system,
    the solution is given, but I can't seem to get the correct solution.

    The system is given:

    w + x + y +4z = 0
    w + x +5z = 0
    2w+ x + 3y+4z = 0
    w - 3x + 2y- 9z = 0

    there should be infinitely many solutions.
    Thanks again =]
     
  2. tails

    tails Member

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    A = [ [1 1 2 1]' [1 1 1 -3]' [1 0 3 2]' [4 5 4 -9]' [0 0 0 0]']
    Use row reduction to get the reduced row echelon form. You will see rows of 0's this means that the corresponding variable can be parameterized. This gives you infinite solutions.
     
  3. KilaKilaGirl

    KilaKilaGirl Well-Known Member

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    this is linear Algebra. Why don't you download the program called "MatLab". When I took the class, i simply used that program to solve all this
     
  4. tidus

    tidus New Member

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    If the OP doesn’t figure out how to do the question by hand, then he/she would be screwed for the final exam b/c you’re usually not allowed to bring computers (Matlab) to exams.
     
  5. ^ lol exactly