Edexcel FP1 2013 June — Question 6

Exam BoardEdexcel
ModuleFP1 (Further Pure Mathematics 1)
Year2013
SessionJune
TopicLinear transformations

6. $$\mathbf { A } = \left( \begin{array} { r r } 0 & 1
- 1 & 0 \end{array} \right) , \quad \mathbf { B } = \left( \begin{array} { l l } 2 & 3
1 & 4 \end{array} \right)$$ The transformation represented by \(\mathbf { B }\) followed by the transformation represented by \(\mathbf { A }\) is equivalent to the transformation represented by \(\mathbf { P }\).
  1. Find the matrix \(\mathbf { P }\). Triangle \(T\) is transformed to the triangle \(T ^ { \prime }\) by the transformation represented by \(\mathbf { P }\). Given that the area of triangle \(T ^ { \prime }\) is 24 square units,
  2. find the area of triangle \(T\). Triangle \(T ^ { \prime }\) is transformed to the original triangle \(T\) by the matrix represented by \(\mathbf { Q }\).
  3. Find the matrix \(\mathbf { Q }\).