Question

Me ajudem na questões de matemática

Answer 1

Boa Noite

Lembrando:

i é a linha;

j é a coluna.

Questão A:

$A = \left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\end{array}\right]$

$a_{ij} = 2i + 3j$

$A=\left[\begin{array}{ccc}5&8&11\\7&10&13\end{array}\right]$

Questão B:

$B = \left[\begin{array}{ccc}b11&b12&b13\\b21&b22&b23\\b31&b32&b33\end{array}\right]$

$b_{ij} = \frac{i}{j}$

$B = \left[\begin{array}{ccc}0&\frac{1}{2} &\frac{1}{3} \\2&0&\frac{2}{3} \\3&\frac{3}{2} &0\end{array}\right]$

Questão C:

$C = \left[\begin{array}{c}c11\\c21\\c31\end{array}\right]$

$c_{ij} = i^{2} + j$

$C = \left[\begin{array}{c}2\\18\\49\end{array}\right]$

Questão D:

$D = \left[\begin{array}{ccc}d11&d12&d13\end{array}\right]$

$d_{ij} = i - j$

$D = \left[\begin{array}{ccc}0&-1&-2\end{array}\right]$

Questão E:

$E = \left[\begin{array}{cccc}e11&e12&e13&e14\\e21&e22&e23&e24\\e31&e32&e33&e34\end{array}\right]$

$e_{ij} =$ 2, se i >= j

       -1, se i < j

$E = \left[\begin{array}{cccc}2&-1&-1&-1\\2&2&-1&-1\\2&2&2&-1\end{array}\right]$