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LFM Pure
Proof
Q5
WJEC Unit 3 2024 June — Question 5
Exam Board
WJEC
Module
Unit 3 (Unit 3)
Year
2024
Session
June
Topic
Proof
5. Prove by contradiction the following proposition: When \(x\) is real and positive, \(x + \frac { 81 } { x } \geqslant 18\).
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