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LFM Pure and Mechanics
Laws of Logarithms
Q12
WJEC Unit 1 Specimen — Question 12
Exam Board
WJEC
Module
Unit 1 (Unit 1)
Session
Specimen
Topic
Laws of Logarithms
12. Prove that $$\log _ { 7 } a \times \log _ { a } 19 = \log _ { 7 } 19$$ whatever the value of the positive constant \(a\).
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