Edexcel C2 2012 January — Question 4

Exam BoardEdexcel
ModuleC2 (Core Mathematics 2)
Year2012
SessionJanuary
TopicLaws of Logarithms
4. Given that \(y = 3 x ^ { 2 }\),
  1. show that \(\log _ { 3 } y = 1 + 2 \log _ { 3 } x\)
  2. Hence, or otherwise, solve the equation $$1 + 2 \log _ { 3 } x = \log _ { 3 } ( 28 x - 9 )$$
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