OCR C2 2005 January — Question 4 8 marks

Exam BoardOCR
ModuleC2 (Core Mathematics 2)
Year2005
SessionJanuary
Marks8
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicAreas Between Curves
TypeTwo Curves Intersection Area
DifficultyModerate -0.3 This is a straightforward C2 integration question requiring verification of intersection points by substitution (routine algebra) and finding area between curves using a standard formula. The integration itself involves basic power rules (x^{-2} and x^2), and the limits are given. Slightly easier than average due to the verification part being trivial and the integration being mechanical with no tricky algebraic manipulation required.
Spec1.08e Area between curve and x-axis: using definite integrals1.08f Area between two curves: using integration

4 \includegraphics[max width=\textwidth, alt={}, center]{608720b6-5b18-45e9-8838-c94b347ab3b7-2_547_511_1813_817} The diagram shows a sketch of parts of the curves \(y = \frac { 16 } { x ^ { 2 } }\) and \(y = 17 - x ^ { 2 }\).
  1. Verify that these curves intersect at the points \(( 1,16 )\) and \(( 4,1 )\).
  2. Calculate the exact area of the shaded region between the curves.

4\\
\includegraphics[max width=\textwidth, alt={}, center]{608720b6-5b18-45e9-8838-c94b347ab3b7-2_547_511_1813_817}

The diagram shows a sketch of parts of the curves $y = \frac { 16 } { x ^ { 2 } }$ and $y = 17 - x ^ { 2 }$.\\
(i) Verify that these curves intersect at the points $( 1,16 )$ and $( 4,1 )$.\\
(ii) Calculate the exact area of the shaded region between the curves.

\hfill \mbox{\textit{OCR C2 2005 Q4 [8]}}