Question

contruir matrizes A = [aij]2×2 sendo aij=2i-j

Answer 1

Oiii

$A = [aij]\begin{bmatrix} a11 &a12 \\ a21 & a22 \end{bmatrix}_{2x2}$

$sendo (aij=2i-j)$

$\left\{\begin{matrix} a11 = 2.1 - 1\\ a11 = 2 -1\\ a11 = \boxed{1}\\ \end{matrix}\right. \left\{\begin{matrix} a12 = 2.1 - 2\\ a12 = 2 -2\\ a12 = \boxed{0}\\ \end{matrix}\right. \left\{\begin{matrix} a21 = 2.2 - 1\\ a21 = 4 -1\\ a21 = \boxed{3}\\ \end{matrix}\right. \left\{\begin{matrix} a22 = 2.2 - 2\\ a22 = 4 -2\\ a22 = \boxed{2}\\ \end{matrix}\right.$

Ficando

$\boxed{A = \begin{bmatrix} 1 &0 \\ 3 & 2 \end{bmatrix}}$