| Exam Board | Edexcel |
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| Module | C4 (Core Mathematics 4) |
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| Year | 2012 |
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| Session | January |
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| Topic | Integration by Parts |
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2. (a) Use integration by parts to find \(\int x \sin 3 x \mathrm {~d} x\).
(b) Using your answer to part (a), find \(\int x ^ { 2 } \cos 3 x \mathrm {~d} x\).