Quiz about Quiz sobre Multiplicação de Matrizes

Question 1

Calcule o produto das matrizes $$A = \begin{bmatrix} 1 & 2 \ 3 & 4 \end{bmatrix}$$ e $$B = \begin{bmatrix} 2 & 0 \ 1 & 2 \end{bmatrix}$$ .

Accepted Answer

$$\begin{bmatrix} 4 & 4 \ 10 & 8 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 2 & 2 \ 6 & 6 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 3 & 2 \ 7 & 6 \end{bmatrix}$$

Question 2

Calcule o produto das matrizes $$A = \begin{bmatrix} 2 & 0 \ 1 & 3 \end{bmatrix}$$ e $$B = \begin{bmatrix} 1 & 4 \ 2 & 5 \end{bmatrix}$$ .

Accepted Answer

$$\begin{bmatrix} 2 & 8 \ 7 & 19 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 4 & 10 \ 5 & 15 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 3 & 9 \ 8 & 20 \end{bmatrix}$$

Question 3

Dadas as matrizes $$A = \begin{bmatrix} 1 & 2 & 3 \ 0 & 1 & 4 \end{bmatrix}$$ e $$B = \begin{bmatrix} 2 & 0 \ 1 & 2 \ 3 & 1 \end{bmatrix}$$ , calcule $$A \cdot B$$ .

Accepted Answer

$$\begin{bmatrix} 13 & 5 \ 14 & 6 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 12 & 4 \ 13 & 5 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 11 & 3 \ 12 & 4 \end{bmatrix}$$

Question 4

Calcule o produto das matrizes $$A = \begin{bmatrix} 3 & 1 \ 2 & 2 \end{bmatrix}$$ e $$B = \begin{bmatrix} 1 & 2 \ 0 & 1 \end{bmatrix}$$ .

Accepted Answer

$$\begin{bmatrix} 3 & 7 \ 2 & 6 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 4 & 5 \ 3 & 4 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 1 & 2 \ 0 & 1 \end{bmatrix}$$

Question 5

Dadas as matrizes $$A = \begin{bmatrix} 2 & 1 \ 0 & 1 \end{bmatrix}$$ e $$B = \begin{bmatrix} 1 & 3 \ 4 & 2 \end{bmatrix}$$ , calcule $$A \cdot B$$ .

Accepted Answer

$$\begin{bmatrix} 6 & 8 \ 4 & 2 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 2 & 5 \ 1 & 3 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 3 & 7 \ 2 & 6 \end{bmatrix}$$

Question 6

Calcule o produto das matrizes $$A = \begin{bmatrix} 4 & 2 \ 1 & 3 \end{bmatrix}$$ e $$B = \begin{bmatrix} 1 & 0 \ 0 & 1 \end{bmatrix}$$ .

Accepted Answer

$$\begin{bmatrix} 4 & 2 \ 1 & 3 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 2 & 4 \ 3 & 1 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 1 & 0 \ 0 & 1 \end{bmatrix}$$

Question 7

Dadas as matrizes $$A = \begin{bmatrix} 1 & 2 \ 3 & 1 \end{bmatrix}$$ e $$B = \begin{bmatrix} 2 & 1 \ 0 & 3 \end{bmatrix}$$ , calcule $$A \cdot B$$ .

Accepted Answer

$$\begin{bmatrix} 2 & 7 \ 6 & 6 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 1 & 5 \ 3 & 4 \end{bmatrix}$$

Answer

$$\begin{bmatrix} 2 & 3 \ 0 & 1 \end{bmatrix}$$

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