please explain with a graph. Question 2. Let f: R R be defined by f(x) = x² - 4x 2. Show that f has at least three real roots; that is, show that there are at least three real values of r such that f(x) = 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 30E
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please explain with a graph.
Question 2. Let f: R R be defined by f(x) = x² - 4x 2. Show that f has at least
three real roots; that is, show that there are at least three real values of x such that f(x) = 0.
Transcribed Image Text:please explain with a graph. Question 2. Let f: R R be defined by f(x) = x² - 4x 2. Show that f has at least three real roots; that is, show that there are at least three real values of x such that f(x) = 0.
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