Posted on by Dr. McDonald

11 HL Planes and Matrices

  1. Use row reduction to express the matrix below in row echelon form (or reduced row echelon form).
    \[\left[\begin{array}{@{}ccc|c@{}}
    1 & 3 & -2 & 4 \\
    -2 & -6 & 4 & 9 \\
    2 & 1 & 1 & -2
    \end{array}\right]\]
  2. Use row reduction to express the matrix below in row echelon form (or reduced row echelon form).
    \[\left[\begin{array}{@{}ccc|c@{}}
    1 & 3 & -2 & 4 \\
    -2 & -6 & 4 & 8 \\
    2 & 1 & 1 & -2
    \end{array}\right]\]

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