# Question Solved1 AnswerAnswer Question 6(A2). Make sure its clear to read. Please show all work.  6. Use the Gauss-Jordan method to invert $A_{1}=\left[\begin{array}{lll} 1 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 0 & 1 \end{array}\right], \quad A_{2}=\left[\begin{array}{ccc} 2 & -1 & 0 \\ -1 & 2 & -1 \\ 0 & -1 & 2 \end{array}\right], \quad A_{3}=\left[\begin{array}{lll} 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 1 & 1 \end{array}\right]$

Transcribed Image Text: 6. Use the Gauss-Jordan method to invert $A_{1}=\left[\begin{array}{lll} 1 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 0 & 1 \end{array}\right], \quad A_{2}=\left[\begin{array}{ccc} 2 & -1 & 0 \\ -1 & 2 & -1 \\ 0 & -1 & 2 \end{array}\right], \quad A_{3}=\left[\begin{array}{lll} 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 1 & 1 \end{array}\right]$
Transcribed Image Text: 6. Use the Gauss-Jordan method to invert $A_{1}=\left[\begin{array}{lll} 1 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 0 & 1 \end{array}\right], \quad A_{2}=\left[\begin{array}{ccc} 2 & -1 & 0 \\ -1 & 2 & -1 \\ 0 & -1 & 2 \end{array}\right], \quad A_{3}=\left[\begin{array}{lll} 0 & 0 & 1 \\ 0 & 1 & 1 \\ 1 & 1 & 1 \end{array}\right]$