| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2013 |
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| Session | June |
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| Topic | Modulus function |
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4
- Solve the equation \(| 4 x - 1 | = | x - 3 |\).
- Hence solve the equation \(\left| 4 ^ { y + 1 } - 1 \right| = \left| 4 ^ { y } - 3 \right|\) correct to 3 significant figures.