Sendo A = ![\left[\begin{array}{ccc}2&1\\3&2\\\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%261%5C%5C3%262%5C%5C%5Cend%7Barray%7D%5Cright%5D%20 "\left[\begin{array}{ccc}2&1\\3&2\\\end{array}\right]")
e B = ![\left[\begin{array}{ccc}1&5\\2&-2\\\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%265%5C%5C2%26-2%5C%5C%5Cend%7Barray%7D%5Cright%5D%20 "\left[\begin{array}{ccc}1&5\\2&-2\\\end{array}\right]")
, determine:
a) A
+ B
b) (5A + B)
Sendo A =![\left[\begin{array}{ccc}1&2\\4&5\\\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%262%5C%5C4%265%5C%5C%5Cend%7Barray%7D%5Cright%5D%20 "\left[\begin{array}{ccc}1&2\\4&5\\\end{array}\right]")
e B = ![\left[\begin{array}{ccc}2&0\\1&2\\\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%260%5C%5C1%262%5C%5C%5Cend%7Barray%7D%5Cright%5D%20%20%20 "\left[\begin{array}{ccc}2&0\\1&2\\\end{array}\right]")
, mostre que:
a) (A) = A
b) (A + B) = A + B
c) (2A) = 2A
d) (A - B) = A - B
a) A
b) (5A + B)
Sendo A =
a) (A
b) (A + B)
c) (2A)
d) (A - B)
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Vou anexar a resolução por ser mais prático, ok? Segue abaixo.
Se não conseguir entender me avise. Abraços!