Horizontal Tangent Line In Exercises 63–70,determine the point(s) (if any) at which the graphof the function has a horizontal tangent line. \text { 63. } y=x^{4}-2 x^{2}+3

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 57E
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Horizontal Tangent Line In Exercises 63–70,
determine the point(s) (if any) at which the graph
of the function has a horizontal tangent line.

\text { 63. } y=x^{4}-2 x^{2}+3

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