38625349
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
Dadas as matrizes, A do tipo 3x2 e B do tipo 2x4, qual o tipo da matriz AxB?
Answer
-
3x4
-
4x3
-
2x2
-
nda
Question 2
Question
Se a matriz A é do tipo mxn, a matriz B é do tipo 3xp e a matriz AxB é do tipo 5x2, marque a alternativa com os valores de m, n e p
Answer
-
m=5, n=3 e p = 2
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m=3, n=5 e p = 2
-
m=5, n=2 e p = 3
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m=2, n=3 e p =5
Question 3
Question
Dadas as matrizes \(A = \left( \begin{array}{rr}
2 & 1 \\
1 & 3
\end{array}\right)\) e \(B = \left( \begin{array}{rrr}
4 & 2 & 0 \\
5 & 1 & 3
\end{array}\right)\), calcular \(A.B\)
Answer
-
\(AB = \left( \begin{array}{rrr} 13 & 5 & 3 \\ 5 & 1 & 3 \end{array}\right)\)
-
\(AB = \left( \begin{array}{rr} 13 & 5 \\ 5 & 1 \\ 3 & 3 \end{array}\right)\)
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\(AB = \left( \begin{array}{rrr} 5 & 1 & 3 \\ 13 & 5 & 3 \end{array}\right)\)
-
\(AB = \left( \begin{array}{rr} 5 & 13 \\ 1 & 5 \\ 3 & 3 \end{array}\right)\)
Question 4
Question
Seja \(A = \left( \begin{array}{rr}
2 & -1 \\
3 & 1
\end{array}\right)\) e \(B = \left( \begin{array}{rr}
\frac{1}{5} & \frac{1}{5} \\
-\frac{3}{5} & \frac{2}{5}
\end{array}\right)\). Então \(A.B = B.A\).
Answer
- True
- False
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