3.17 Supposep< 1, p # 0. Show that the function 1/p f(x) = i=1 R + is concave. This includes as special cases f(x) = (E"1 x;²)² and the harmonic mean f(x) = (E" 1/x;)-1. Hint. Adapt the proofs for the log-sum-exp with dom f %3D vi=1 vi=! co 1
3.17 Supposep< 1, p # 0. Show that the function 1/p f(x) = i=1 R + is concave. This includes as special cases f(x) = (E"1 x;²)² and the harmonic mean f(x) = (E" 1/x;)-1. Hint. Adapt the proofs for the log-sum-exp with dom f %3D vi=1 vi=! co 1
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section: Chapter Questions
Problem 5T
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