Thinking about Functions
Review question

Can we solve this inequality involving two modulus functions?
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Ref: R9896
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Suggestion

Find the set of real values of \(x\) for which \[\big |x+3\big |>2\big |x-3\big |.\]

What do the graphs of \(y=\big |x+3\big |\) and \(y=2\big |x-3\big |\) look like?

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UCLES A level Mathematics A 1 and Pure Mathematics 1, QP 9200/1 and 9208/1, 1984, Q3

Question reproduced by kind permission of Cambridge Assessment Group Archives. The question remains Copyright University of Cambridge Local Examinations Syndicate (“UCLES”), All rights reserved.

 Last updated 29-Aug-16
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