Question

escreva a matriz M = (mij)2×2 , tal que aij = -2, se i diferente de j e aij = 1 , se i = j

Answer 1

Resposta:

$M=\begin{bmatrix}</p><p> a_{11} & a_{12} \\</p><p> a_{21} & a_{22} \\</p><p>\end{bmatrix}\\ \\M=\begin{bmatrix}</p><p> 1 & -2 \\</p><p> -2 & 1 \\</p><p>\end{bmatrix}$