Question

escreva a matriz A=(aij) do tipo 3×4 =2i-3j

Answer 1

a11=2.1-3.1=2-3=-1
a12=2.1-2.2=2-4=-2
a13=2.1-2.3=2-6=-4
a21=2.2-2.1=4-2=2
a22=2.2-2.2=4-4=0
a23=2.2-2.3=4-6=-2