Question

Represente a matriz A=(aij) 2x2, onde aij= i² + 4j²

Answer 1

$\left[\begin{array}{ccc}a_{11} &b_{12}\\c_{21}&d_{22}\\\end{array}\right] \\\\ a_{11}=1^2+4*1^2=5\\ b_{12}=1^2+4*2^2 = 17\\ c_{21}=2^2+4*1^2=8\\ d_{22}= 2^2+4*2^2=20\\\\ \left[\begin{array}{ccc}5 &17\\8}&20}\\\end{array}\right]$