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Math Help - Row operations to solve a system of equations

  1. #1
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    Row operations to solve a system of equations

    Hi

    I need help in solving a question involving row operations by converting the equations in a matrix.

    i have attached the question

    thank you

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  2. #2
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    Quote Originally Posted by rpatel View Post
    Hi

    I need help in solving a question involving row operations by converting the equations in a matrix.

    i have attached the question

    thank you

    write the augmented matrix of the system and do the row operations until your matrix is in an echelon form, which is: \begin{bmatrix}1 & 1 & 1 & | & 1 \\ 0 & -1 & -3 & | & -1 \\ 0 & 0 & a-4 & | & 0 \end{bmatrix}. you should be able to finish the proof now.
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