Question

Escreva a matriz B=(bij)2×2 na qual bij=i+3j

Answer 1

bij=i+3j
b11=1+3.1=1+3=4
b12=1+3.2=1+6=7
b21=2+3.1=2+3=5
b22=2+3.2=2+6=8

$B = \left[\begin{array}{ccc}4&7\\5&8\end{array}\right]$


Segunda questão)
C=(Cij) 3×3 na qual cij =2i-j

cij =2i-j
c11=2.1-1=2-1=1
c12=2.1-2=2-2=0
c13=2.1-3=2-3=-1
c21=2.2-1=4-1=3
c22=2.2-2=4-2=2
c23=2.2-3=4-3=1
c31=2.3-1=6-1=5
c32=2.3-2=6-2=4
c33=2.3-3=6-3=3

$C = \left[\begin{array}{ccc}1&0&-1\\3&2&1\\5&4&3\end{array}\right]$