(Solved):   5. Factor \( A \) into \( L U \), and write down the upper triangular system \( U x=c \) w ...

 

5. Factor \( A \) into \( L U \), and write down the upper triangular system \( U x=c \) which appears after elimination, for \[ A x=\left[\begin{array}{lll} 2 & 3 & 3 \\ 0 & 5 & 7 \\ 6 & 9 & 8 \end{array}\right]\left[\begin{array}{c} u \\ v \\ w \end{array}\right]=\left[\begin{array}{c} 2 \\ 2 \\ 5 \end{array}\right] \]