Prove that the equation 2x² + |x| - 2 cos(x) = 4 has exactly two solutions.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 43RE
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Prove that the equation 2x² + |x| - 2 cos(x)
=
4 has exactly two solutions.
Transcribed Image Text:Prove that the equation 2x² + |x| - 2 cos(x) = 4 has exactly two solutions.
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