Question

ME AJUDEM;
1) ESCREVA A MATRIZ =(CIJ) 2X3 TAL QUE {cij=0para i=j
{cij=2+j para i ≠ j

Answer 1

$c_{11}=0\\c_{12}=2+2=4\\c_{13}=2+3=5\\c_{21}=2+1=3\\c_{22}=0\\c_{23}=2+3=5$

$\huge\mathtt{C=\begin{bmatrix}0&4&5\\3&0&5\end{bmatrix}}$