Edexcel C2 — Question 8

Exam BoardEdexcel
ModuleC2 (Core Mathematics 2)
TopicCurve Sketching
TypeFind stationary points of polynomial

8. \begin{figure}[h]
\captionsetup{labelformat=empty} \caption{Figure 2} \includegraphics[alt={},max width=\textwidth]{f01026a9-e5fe-4c19-b096-2bb4ad22c389-4_769_1150_269_379}
\end{figure} Figure 2 shows part of the curve with equation $$y = x ^ { 3 } - 6 x ^ { 2 } + 9 x .$$ The curve touches the \(x\)-axis at \(A\) and has a maximum turning point at \(B\).
  1. Show that the equation of the curve may be written as $$y = x ( x - 3 ) ^ { 2 } ,$$ and hence write down the coordinates of \(A\).
  2. Find the coordinates of \(B\). The shaded region \(R\) is bounded by the curve and the \(x\)-axis.
  3. Find the area of \(R\).