CAIE P3 2007 June — Question 4

Exam BoardCAIE
ModuleP3 (Pure Mathematics 3)
Year2007
SessionJune
TopicFixed Point Iteration
4 Using the substitution \(u = 3 ^ { x }\), or otherwise, solve, correct to 3 significant figures, the equation $$3 ^ { x } = 2 + 3 ^ { - x }$$
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