Let n > 1. We have φ(n) = Σμ(α) = d\n η
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
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Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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![. Let n 1. We have
п
$(n) = Σµ(d) ²7/ .
d
d|n](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9149ca68-66d8-4eb1-bbfa-98cc7c82f78f%2Fe727680b-ae7d-4e7d-822e-593dbbbd3be6%2Fiuhvlx2_processed.jpeg&w=3840&q=75)
Transcribed Image Text:. Let n 1. We have
п
$(n) = Σµ(d) ²7/ .
d
d|n
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