Question

matrizes .B=(bij)do tipo 3x2,tal que bij=i-1,para i=j e bij=3j para i=j

Answer 1

$\left[\begin{array}{ccc} b^{11} & b^{12} &\\ b^{21} & b^{22} &\\ b^{31} & b^{32} &\end{array}\right]$

b¹¹=3*1=3
b¹²=1-1=0
b²¹=2-1=1
b²²=3*2=6
b³¹=3-1=2
b³²=3-1=2

Então fica:

$\left[\begin{array}{ccc}3&0&\\1&6&\\2&2&\end{array}\right]$

Espero ter ajudado :D