Question

escreva matriz quadrada de ordem 3 tal que aij=i3-2j

Answer 1

a11 a12 a13
b21 b22 b23
c31 c32 c33

a11=1×3-2×1= a12=1×3-2×2 a13=1×3-2×3
a11=3-2=1 a12=3-4=-1 a13=3-6=-1

b21=2×3-2×1=6-3=1
b22=2×3-2×2=6-4=2
b23=2×3-2×3=6-6=0

c31=3×3-2×1=9-2=7
c32=3×3-2×2=9-4=5
c33=3×3-2×3=9-6=3


1 -1 -3
1 2 0
7 5 3