| Exam Board | CAIE |
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| Module | P2 (Pure Mathematics 2) |
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| Year | 2018 |
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| Session | June |
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| Topic | Laws of Logarithms |
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4
- Solve the equation \(2 \ln ( 2 x ) - \ln ( x + 3 ) = 4 \ln 2\).
- Hence solve the equation
$$2 \ln \left( 2 ^ { u + 1 } \right) - \ln \left( 2 ^ { u } + 3 \right) = 4 \ln 2$$
giving the value of \(u\) correct to 4 significant figures.