5. Let X, be a RSR (mod n). Prove that E e(E/n) EXn is a multiplicative function of n, where e(x) = e²riz_

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
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Chapter4: Polynomial And Rational Functions
Section4.3: Zeros Of Polynomials
Problem 27E
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5. Let X, be a RSR (mod n). Prove that
E e(E/n)
EEXn
is a multiplicative function of n, where
e(x) = e²riz
3D
Hint: Use the Chinese Remainder Theorem.
Transcribed Image Text:5. Let X, be a RSR (mod n). Prove that E e(E/n) EEXn is a multiplicative function of n, where e(x) = e²riz 3D Hint: Use the Chinese Remainder Theorem.
Expert Solution
Step 1

Given Xn be a RSRmod n.

We know that RSRmod n=x: 0<x<n, gcdx,n=1.

Now consider the function fn=ξXneξn, where ex=e2πix.

Let m,n be two arbitrary numbers.

Therefore:

Xn=x: 0<x<n, gcdx,n=1 and

Xm=x: 0<x<m, gcdx,m=1.

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