Question

3. Dadas A =



5 6

4 2

e B =



0 −1

5 4

, calcular A+B e A−B​

Answer 1

Resposta:

A + B

5+0= 5 ⇒ 6+ (-1)= 5

4+5= 9 ⇒ 2+4 = 6

5 5

9 6

A - B

5 - 0= 5 ⇒ 6 - (-1)= 7

4 - 5= -1 ⇒ 2 - 4= -2

5 7

-1 -2

Answer 2

$\Large\boxed{\boxed{\boxed{{Ola\´\ }}}}}$

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a) A + B

$\sf \left[\begin{array}{cc} \sf5& \sf6\\ \sf4& \sf2\end{array}\right] + \left[\begin{array}{cc} \sf0& \sf- 1\\ \sf5& \sf4\end{array}\right] \\ \\ \sf \left[\begin{array}{cc} \sf5 + 0& \sf6 + ( - 1)\\ \sf4 + 5& \sf2 + 4\end{array}\right] \\ \\ \sf \left[\begin{array}{cc} \sf5& \sf5\\ \sf9& \sf6\end{array}\right]$

b) A - B

$\sf \left[\begin{array}{cc} \sf5& \sf6\\ \sf4& \sf2\end{array}\right] - \left[\begin{array}{cc} \sf0& - \sf 1\\ \sf5& \sf4\end{array}\right] \\ \\ \sf \left[\begin{array}{cc} \sf5 - 0& \sf6 - ( - 1)\\ \sf4 - 5& \sf2 - 4\end{array}\right] \\ \\ \sf \left[\begin{array}{cc} \sf5& \sf7\\ - \sf1& - \sf 2\end{array}\right]$