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

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
Question

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

Expert Solution
Step 1

Given equation :-

    x2 + 9y2 + 6x - 36y + 36 = 0

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