4. Show that if ki = (X; - X)/[Σ(Χ; – X)2], then(a) Σ ki = 0;=(b) Σk = 1/[Σ(X, − x)2];(c) Σk;(X; - X) = Σk;X; = 1.=

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Answered: 4. Show that if ki = (X; - X)/[Σ(X; –…

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4. Show that if ki = (X; - X)/[Σ(X; – X)2], then (a) Σki = 0; = (b) Σk? = 1/[Σ(X; − x)2]; (c) Σκ;(X; - X) = Σk;X; = 1.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter3: Functions And Graphs

Section3.4: Definition Of Function

Problem 52E

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Question

4. Show that if ki = (X; - X)/[Σ(Χ; – X)2], then
(a) Σ ki = 0;
=
(b) Σk = 1/[Σ(X, − x)2];
(c) Σk;(X; - X) = Σk;X; = 1.
=

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