Exercise 2.4.6

Answers

{(A + B)}^{2} = [\begin{matrix} 10 & 4 \\ 6 & 6 \end{matrix}] = A^{2} + AB + BA + B^{2} .

But

A^{2} + 2 AB + B^{2} = [\begin{matrix} 16 & 2 \\ 3 & 0 \end{matrix}] .

mathchakra

2021-12-06 17:25