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.
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
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 44E
Related questions
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.
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F74ebc956-cc67-4cbc-b678-8e3025b3fdba%2Fd96e0af4-8d00-4d80-8622-b460da5c8b86%2F5yr4xc9_processed.png&w=3840&q=75)
Transcribed Image Text: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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