Exercise 2.4.17

Answers

(a) Use only column 2 of $B$
(b) Use only row 2 of $A$
(c)-(d) Use row 2 of first $A$ .

Column 2 of $AB$ is

[\begin{matrix} 0 \\ 0 \end{matrix}] .

Row 2 of $AB$ is

[\begin{matrix} 1 & 0 & 0 \end{matrix}] .

Row 2 of $A^{2}$ is

[\begin{matrix} 0 & 1 \end{matrix}] .

Row 2 of $A^{3}$ is

[\begin{matrix} 3 & - 2 \end{matrix}] .

mathchakra

2021-12-06 17:37