Question

Ajudem ao por favor

Answer 1

Resposta:

Explicação passo-a-passo:

a)

$\left[\begin{array}{ccc}-1+2&3-1\\2+3&-8+0\\\end{array}\right]$

$\left[\begin{array}{ccc}1&2\\5&-8\\\end{array}\right]$

b)

linha vira coluna

$\left[\begin{array}{ccc}-1&2\\3&-8\\\end{array}\right]$

c)

$\left[\begin{array}{ccc}-1*2+3*3&-1*(-1)+3*0\\2*2+(-8)*3&2*(-1)+(-8)*0\\\end{array}\right]$

$\left[\begin{array}{ccc}7&1\\-20&-2\\\end{array}\right]$

d)

D=-1*(-8)-(3*2)

D=8-6

D=2

e)

D(A)=D(A^t)

Portanto D=2

f)

D=2*0-((-1)*3)

D=3

g)

D(A+B)=1*(-8)-(2*5)

D(A+B)=-8-10

D(A+B)=-18

h)

=D(A)+D(B)

=2+3

=5

i)

D(AB)=7*(-2)-(1*(-20))

D(AB)= -14+20

D(AB)= 6

j)

=D(A) * D(B)

= 2 * 3

= 6