Exercise 3.2.19

Answers

The matrix

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

has $(1, 1, 1)$ in $C (A)$ and only the line $(c, c, c, c)$ in $N (A)$ .

mathchakra

2022-01-23 10:48