define A(x) by A(x) = Σ a(n), n≤x a: Let a(n) be an arithmetical function. We y

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.4: Logarithmic Functions
Problem 46E
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Number theory question

define A(x) by
A(x) = Σa(n),
n<x
a: Let a(n) be an arithmetical function. We
where A(x) = 0 if x < 1.
Let f has continuous derivative on the interval [y, x], where 0 < y < x. Then we have
Σ a(n)f(n) = A(z)f(x) — A(y)f(y) — ["* A(t)ƒ'(t)}dt
Y
y<n<x
P.1)
Transcribed Image Text:define A(x) by A(x) = Σa(n), n<x a: Let a(n) be an arithmetical function. We where A(x) = 0 if x < 1. Let f has continuous derivative on the interval [y, x], where 0 < y < x. Then we have Σ a(n)f(n) = A(z)f(x) — A(y)f(y) — ["* A(t)ƒ'(t)}dt Y y<n<x P.1)
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