Question

B = (bij) 4x2, tal que bij = 3.i+j

Answer 1

b11  b12
b21  b22
b31  b32
b41  b42

b11=3.1+1=3+1=4
b12=3.1+2=3+2=5
b21=3.2+1=6+1=7
b22=3.2+2=6+2=8
b31=3.3+1=9+1=10
b32=3.3+2=9+2=11
b41=3.4+1=12+1=13
b42=3.4+2=12+2=14

Answer 2

Boa tarde 

B = (bij) 4x2, tal que bij = 3.i+j 

essa matriz tem i = 4 linhas e j = 2 colinas

A(1,1) = 3*1 + 1 = 4  , A(1.2) = 3*1 + 2 = 5 
A(2,1) = 3*2 + 1 = 7  , A(2,2) = 3*2 + 2 = 8
A(3,1) = 3*3 + 1 = 10  , A(3,2) = 3*3 + 2 = 11
A(4,1) = 3*4 + 1 = 13 , A(4,2) = 3*4 + 2 = 14