1 You are given that the matrix \(\left( \begin{array} { r r } - 1 & 0
0 & 1 \end{array} \right)\) represents a transformation \(A\), and that the matrix \(\left( \begin{array} { r r } 0 & 1
- 1 & 0 \end{array} \right)\) represents a transformation B .
- Describe the transformations A and B .
- Find the matrix representing the composite transformation consisting of A followed by B .
- What single transformation is represented by this matrix?