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LuizBatman
@LuizBatman
October 2020
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Qual a matriz inversa dessa matriz?
[5 1]
[4 0]
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| 5 1 | | a b | | 1 0 |
| 4 0 | x | c d | = | 0 1 |
5a + c 5b + d 1 0
4a 4b = 0 1
5a + c = 1 ==> 5.0 + c = 1 ==> c = 1
4a = 0 ==> a = 0
5b + d = 0 ==> d = - 5b ==> d = -5(1/4) ==> d = - 5/4
4b = 1 ==> b = 1/4
A-1 = | 0 1/4 |
| 1 - 5/4 |
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Lista de comentários
Verified answer
| 5 1 | | a b | | 1 0 |
| 4 0 | x | c d | = | 0 1 |
5a + c 5b + d 1 0
4a 4b = 0 1
5a + c = 1 ==> 5.0 + c = 1 ==> c = 1
4a = 0 ==> a = 0
5b + d = 0 ==> d = - 5b ==> d = -5(1/4) ==> d = - 5/4
4b = 1 ==> b = 1/4
A-1 = | 0 1/4 |
| 1 - 5/4 |