CAIE P2 2015 November — Question 2

Exam BoardCAIE
ModuleP2 (Pure Mathematics 2)
Year2015
SessionNovember
TopicModulus function
2
  1. Solve the equation \(| 2 x + 3 | = | x + 8 |\).
  2. Hence, using logarithms, solve the equation \(\left| 2 ^ { y + 1 } + 3 \right| = \left| 2 ^ { y } + 8 \right|\). Give the answer correct to 3 significant figures.
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