Problem 6. Consider the curve defined by the equation 8ry – x? - y² – = 0. (1) Find all of the points (x, y) on the curve where the tangent line to the curve is horizontal. (2) Find all of the points (x, y) on the curve where the tangent line to the curve is vertical. Note: this tyne of curve is called a huwnerbola

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Chapter1: Functions And Models
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problem 6 is part of my study guide. I did not understand well how to solve it

(1) A horizontal tangent will have slope m =
8.
Problem 6. Consider the curve defined by the equation 8ry - x2 - y? – 15 = 0.
%3D
(1) Find all of the points (x,y) on the curve where the tangent line to the curve is
horizontal.
(2) Find all of the points (x, y) on the curve where the tangent line to the curve is vertical.
Note: this type of curve is called a hyperbola.
A
dx
Solution 6. To answer both of these questions, we will first find an expression for dy
6.
<>
8.
15
(^M
2.
= 0
Y 8xy – x² - y
16
-
dy
dy
2) - 2л - 2у
dx
8(y+x
d.x
dy
(8x-2y) = 2x - 8y
dx
on
dy
2x
8y
X-4y
4x-y
-
d.x
8x-2y
A horizontal tangent will have slope m =
dy
dx
0; this occurs when x = 4y. We
plug this relationship into the curve equation to get the points on the curve that
satisfy this,
Transcribed Image Text:(1) A horizontal tangent will have slope m = 8. Problem 6. Consider the curve defined by the equation 8ry - x2 - y? – 15 = 0. %3D (1) Find all of the points (x,y) on the curve where the tangent line to the curve is horizontal. (2) Find all of the points (x, y) on the curve where the tangent line to the curve is vertical. Note: this type of curve is called a hyperbola. A dx Solution 6. To answer both of these questions, we will first find an expression for dy 6. <> 8. 15 (^M 2. = 0 Y 8xy – x² - y 16 - dy dy 2) - 2л - 2у dx 8(y+x d.x dy (8x-2y) = 2x - 8y dx on dy 2x 8y X-4y 4x-y - d.x 8x-2y A horizontal tangent will have slope m = dy dx 0; this occurs when x = 4y. We plug this relationship into the curve equation to get the points on the curve that satisfy this,
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