Question

GENTE POR FAVOR ME AJUDEM, É PRA AGORA
A= (aij) 1×3, tal que aij=2.i-j
B= (bij) 2×2 que é definida pela fórmula bij=2i+3j-1

Answer 1

$A=\begin{bmatrix}a_{11}&a_{12}&a_{13}\end{bmatrix}$

$\mathsf{a_{11}=2.1-1=2-1=1}\\\mathsf{a_{12}=2.1-2=2-2=0}\\\mathsf{a_{13}=2.1-3=2-3=-1}$

$\huge~A=\begin{bmatrix}1&0&-1\end{bmatrix}$

$\dotfill$

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

$\mathsf{a_{11}=2.1+3.1-1=2+3-1=4}\\\mathsf{a_{12}=2.1+3.2-1=2+6-1=7}\\\mathsf{a_{21}=2.2+3.1-1=4+3-1=6}\\\mathsf{a_{22}=2.2+3.2-1=4+6-1=9}$

$\huge~B=\begin{bmatrix}4&7\\6&9\end{bmatrix}$