Let n > 1. We have φ(n) = Σμ(α) = d\n η

Trigonometry (MindTap Course List)
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Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
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Prove this

. Let n 1. We have
п
$(n) = Σµ(d) ²7/ .
d
d|n
Transcribed Image Text:. Let n 1. We have п $(n) = Σµ(d) ²7/ . d d|n
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