AQA Further AS Paper 1 2023 June — Question 9

Exam BoardAQA
ModuleFurther AS Paper 1 (Further AS Paper 1)
Year2023
SessionJune
TopicInvariant lines and eigenvalues and vectors

9 The matrix \(\mathbf { M }\) represents the transformation T and is given by $$\mathbf { M } = \left[ \begin{array} { c c } 3 p + 1 & 12
p + 2 & p ^ { 2 } - 3 \end{array} \right]$$ 9
  1. In the case when \(p = 0\) show that the image of the point \(( 4,5 )\) under T is the point \(( 64 , - 7 )\)
    9
  2. In the case when \(p = - 2\) find the gradient of the line of invariant points under \(T\)
    9
  3. Show that \(p = 3\) is the only real value of \(p\) for which \(\mathbf { M }\) is singular.
    The curve \(C\) has equation $$y = \frac { 3 x ^ { 2 } + m x + p } { x ^ { 2 } + p x + m }$$ where \(m\) and \(p\) are integers.
    The vertical asymptotes of \(C\) are \(x = - 4\) and \(x = - 1\)
    The curve \(C\) is shown in the diagram below.
    \includegraphics[max width=\textwidth, alt={}, center]{b37e2ee7-1cde-4d75-895a-381b32f4e95a-12_867_1102_733_463}