Exercise 2.7.23

Answers

We have

A = [\begin{matrix} 0 & 0 & 0 & 1 \\ 1 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 \\ 0 & 0 & 1 & 0 \end{matrix}] = P

and

L = U = I .

Elimination on this $A = P$ exchanges rows 1-2 then rows 2-3 then rows 3-4.

mathchakra

2022-01-16 12:32