Question

3. Sendo a matriz A=(aij) 3x4 tal que aij= i se i=j e 2i se i ≠ j, determine a soma de a22 e a34.
a) 8
b) 9
c) 7
d) 6​

Answer 1

$\Large\boxed{\begin{array}{l}\sf a_{22}=2~~a_{34}=2\cdot3=6\\\sf a_{22}+a_{34}=2+6=8\\\huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~a}}}}\end{array}}$