Vector Matrix Multiplication
1. The problem asks to find the product of a 1x2 row vector and a 2x2 matrix.
2. The row vector is given as $\begin{bmatrix} 2 & 1 \end{bmatrix}$.
3. The matrix is given as $\begin{bmatrix} -1 & 3 \\ 6 & 0 \end{bmatrix}$.
4. To multiply a 1x2 vector by a 2x2 matrix, multiply the vector by each column of the matrix and sum the products:
$$\begin{bmatrix} 2 & 1 \end{bmatrix} \times \begin{bmatrix} -1 & 3 \\ 6 & 0 \end{bmatrix} = \begin{bmatrix} 2 \times (-1) + 1 \times 6 & 2 \times 3 + 1 \times 0 \end{bmatrix}$$
5. Calculate each element:
- First element: $2 \times (-1) + 1 \times 6 = -2 + 6 = 4$
- Second element: $2 \times 3 + 1 \times 0 = 6 + 0 = 6$
6. Therefore, the product is:
$$\begin{bmatrix} 4 & 6 \end{bmatrix}$$
7. This is a 1x2 row vector resulting from the multiplication.
Final answer: $\begin{bmatrix} 4 & 6 \end{bmatrix}$