Use implicit differentiation to find dy/dx and find the x-value of the point at which the graph of the equation has a horizontal tangent line. x2+9y2+6x-36y+36=0

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.2: Introduction To Conics: parabolas
Problem 4ECP: Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.
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Use implicit differentiation to find dy/dx and find the x-value of the point at which the graph of the equation has a horizontal tangent line.

x2+9y2+6x-36y+36=0

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