For p = 13 ⇒ (13) = ⇒3 (12) primitive roots of 13 Φ(12) = Φ(4)•Φ(3) = 2.2 =4 :. 34 primitive roots of 13 please explain why it becomes 4 ↑

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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For p = 13 ⇒ (13) =
⇒ 3
(12) primitive roots of 13
Φ(12) = Φ(4)•Φ(3)
= 2.2
=4
:. 34 primitive roots of 13
please explain why it becomes 4
↑
Transcribed Image Text:For p = 13 ⇒ (13) = ⇒ 3 (12) primitive roots of 13 Φ(12) = Φ(4)•Φ(3) = 2.2 =4 :. 34 primitive roots of 13 please explain why it becomes 4 ↑
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