Therefore by the Second Derivative Test, give the following points. (If an answer does not exist, enter DNE.) relative maximum relative minimum inflection point (x, y) = ( (x, y) = ( (x, y) = ( )
Therefore by the Second Derivative Test, give the following points. (If an answer does not exist, enter DNE.) relative maximum relative minimum inflection point (x, y) = ( (x, y) = ( (x, y) = ( )
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...
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Transcribed Image Text:Analyze and sketch a graph of the function. Label any intercepts, relative extrema, points of inflection, and asymptotes.
x² - 10x + 65
X-8
y =
Step 1
Begin by finding the intercepts. (If an answer does not exist, enter DNE.)
To find the y-intercept, substitute x = 0 and solve for y.
The y-intercept is
65
8
To find the x-intercept, substitute y = 0 and solve for x.
(x, y) = (0,
The x-intercept is
(x, y) = (DNE
y'
=
Step 2
Next, differentiate the given function y = x² − 10x + 65 and write as a single fraction completely factored.
X-8
(2x - 10)(x − 8)
2
65
8
(x -
- 8)¹
y" =
(x - 1)(x - 15)
2
(x -
The derivative y'= 0 when x =
98
(x − 8)³
Substituting x = 15 into y", we see that y"
relative maximum (x, y)
relative minimum
inflection point
Step 3
To determine maximums and minimums by the Second Derivative Test, we differentiate y' with respect to x.
Substituting x = 1 into y", we see that
y"
There is no value of x for which y" is zero.
(x, y)
(x, y)
0,
=
DNE
15,1
98
=
=
x² - 10x + 65
(x - 8)
Step 4
Therefore by the Second Derivative Test, give the following points. (If an answer does not exist, enter DNE.)
(
|).
(
1, 15
> 0.
(entered as a comma-separated list).
0.
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