Question

Considere a matriz A = [aij]2x2, tal que aij = 2i + j. Determine o elemento a12. * 1 2 3 4 5 2)Considere a matriz A = [aij]3x3, tal que aij = i + 3j. Determine o elemento a23. 10 11 12 13 14 3)Considere as matrizes A = [aij]3x3, tal que aij = i + 3j e a matriz B = [bij]3x3, tal que bij = 2i + j . Calcule: a12 + b12. 8 9 10 11 12 4)Considere as matrizes A = [aij]3x3, tal que aij = i + 3j e a matriz B = [bij]3x3, tal que bij = 2i + j . Calcule: a23 - b23. 3 4 5 6 7 Se alguém souber pfvr me ajuda

Answer 1

Resposta:

$\text{Leia abaixo}$

Explicação passo-a-passo:

$\text{A}_{\text{2 x 2}} \rightarrow a_{ij} = 2i + j$

$a_{12} = 2(1) + 2 = 2 + 2 = 4$

$\boxed{\boxed{a_{12} = 4}}$

$\text{A}_{\text{3 x 3}} \rightarrow a_{ij} = i + 3j$

$a_{23} = 2 + 3(3) = 2 + 9 = 11$

$\boxed{\boxed{a_{23} = 11}}$

$\text{A}_{\text{3 x 3}} \rightarrow a_{ij} = i + 3j$

$a_{12} = 1 + 3(2) = 1 + 6 = 7$

$\boxed{\boxed{a_{12} = 7}}$

$\text{B}_{\text{3 x 3}} \rightarrow a_{ij} = 2i + j$

$b_{12} = 2(1) + 2 = 2 + 2 = 4$

$\boxed{\boxed{b_{12} = 4}}$

$a_{12} + b_{12} = 7 + 4 = 11$

$\boxed{\boxed{a_{12} + b_{12} = 11}}$

$\text{A}_{\text{3 x 3}} \rightarrow a_{ij} = i + 3j$

$a_{23} = 2 + 3(3) = 2 + 9 = 11$

$\boxed{\boxed{a_{23} = 11}}$

$\text{B}_{\text{3 x 3}} \rightarrow a_{ij} = 2i + j$

$b_{23} = 2(2) + 3 = 4 + 3 = 7$

$\boxed{\boxed{b_{23} = 7}}$

$a_{23} - b_{23} = 11 - 7 = 4$

$\boxed{\boxed{a_{23} - b_{23} = 4}}$