Vertical and Horizontal Tangent Lines In Exercises 67and 68, find the points at which the graph of the equation hasa vertical or horizontal tangent line.67. 25x2 + 16y2 + 200x − 160y + 400 = 0
Vertical and Horizontal Tangent Lines In Exercises 67and 68, find the points at which the graph of the equation hasa vertical or horizontal tangent line.67. 25x2 + 16y2 + 200x − 160y + 400 = 0
Chapter1: Equations, Inequalities, And Mathematical Modeling
Section1.1: Graphs Of Equations
Problem 49E: Using Technology In Exercises 49–58, use a graphing utility to graph the equation. Use a standard...
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Vertical and Horizontal Tangent Lines In Exercises 67
and 68, find the points at which the graph of the equation has
a vertical or horizontal tangent line.
67. 25x2 + 16y2 + 200x − 160y + 400 = 0
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