38647284
Description
Quiz by BOTE FÉ NA MATEMÁTICA, updated more than 1 year ago
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Created by BOTE FÉ NA MATEMÁTICA
about 1 year ago
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Question 1
Question
Considere a matriz \(A = \left( \begin{array}{rr}
2 & 1 \\
1 & 3
\end{array}\right)\). Calcule Det(A).
Answer
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5
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4
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6
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7
Question 2
Question
Seja \(A = \left( \begin{array}{rrr}
2 & 0 & 2 \\
1 & 5 & 6\\
-1 & 3 & 4
\end{array}\right)\). Calcule Det(A).
Answer
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20
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30
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10
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56
Question 3
Question
Calcular o valor de \(x\), sabendo que \(A = \left| \begin{array}{rrr}
3x & -3 & -1 \\
1 & 0 & 3\\
4 & 2 & 2x-1
\end{array}\right|\) = 0.
Answer
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\(x=-\frac{41}{12}\)
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\(x=-41\)
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\(x=-\frac{41}{13}\)
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\(x=-\frac{42}{13}\)
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