Find the four solutions of x* = 1 (mod 13).

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Can you help me with these two questions

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1. Find the four solutions of x4 = 1 (mod 13).
2. Suppose p is prime and dłp - 1. Show that xd
exactly (d, p – 1) solutions. Conclude that if 4 p – 1, then x²2 = -1
(mod p) has two solutions, and if 4 p- 1, then x
solutions.
- 1 = 0 (mod p) has
2 = -1 (mod p) has no
Transcribed Image Text:text 1. Find the four solutions of x4 = 1 (mod 13). 2. Suppose p is prime and dłp - 1. Show that xd exactly (d, p – 1) solutions. Conclude that if 4 p – 1, then x²2 = -1 (mod p) has two solutions, and if 4 p- 1, then x solutions. - 1 = 0 (mod p) has 2 = -1 (mod p) has no
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