Question

Determine a matriz A = [ aij ] 2x2, que possuí a seguinte lei de formação aij = j ² - 2i​

Answer 1

$\mathsf{A}=\begin{bmatrix}a_{11}&a_{12}\\a_{21}&a_{22}\end{bmatrix}$

$\mathsf{a_{11}=1^2-2.1=1-2=-1}\\\mathsf{a_{12}=2^2-1=4-2=2}\\\mathsf{a_{21}=1^2-2.2=1-4=-3}\\\mathsf{a_{22}=2^2-2.2=4-4=0}$

$\huge\mathsf{A}=\begin{bmatrix}-1&2\\-3&0\end{bmatrix}$