1. The problem is to provide an example of a matrix. 2. A matrix is a rectangular array of numbers arranged in rows and columns. 3. For example, a 2x2 matrix looks like this: $$\begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix}$$ 4. This matrix has 2 rows and 2 columns. 5. Each element is identified by its row and column position. 6. Matrices are used in many areas of math including solving systems of equations, transformations, and more. Final answer: $$\begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix}$$