| Exam Board | OCR |
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| Module | H240/01 (Pure Mathematics) |
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| Year | 2022 |
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| Session | June |
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| Topic | Integration by Substitution |
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9 Use the substitution \(x = 2 \sin \theta\) to show that \(\int _ { 1 } ^ { \sqrt { 3 } } \sqrt { 4 - x ^ { 2 } } \mathrm {~d} x = \frac { 1 } { 3 } \pi\).