Edexcel C4 — Question 7

Exam BoardEdexcel
ModuleC4 (Core Mathematics 4)
TopicParametric equations

7. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{4232f6a1-00ff-4e88-b5f4-1abf3d4742c4-12_560_911_146_456} \captionsetup{labelformat=empty} \caption{Figure 1}
\end{figure} Figure 1 shows the curve with parametric equations $$x = t ^ { 3 } + 1 , \quad y = \frac { 2 } { t } , \quad t > 0 .$$ The shaded region is bounded by the curve, the \(x\)-axis and the lines \(x = 2\) and \(x = 9\).
  1. Find the area of the shaded region.
  2. Show that the volume of the solid formed when the shaded region is rotated through \(2 \pi\) radians about the \(x\)-axis is \(12 \pi\).
  3. Find a cartesian equation for the curve in the form \(y = \mathrm { f } ( x )\).
    7. continued