| Exam Board | AQA |
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| Module | Paper 1 (Paper 1) |
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| Year | 2018 |
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| Session | June |
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| Topic | Sequences and Series |
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3 A periodic sequence is defined by \(U _ { n } = \sin \left( \frac { n \pi } { 2 } \right)\)
State the period of this sequence.
Circle your answer.
\(82 \pi \quad 4 \quad \pi\)