consider the function: f(x) = −5x2 + 20x + 1

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 3CC: If xis large, which function grows faster, f(x)=2x or g(x)=x2?
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consider the function:

f(x) = −5x2 + 20x + 1

Step 1
Previously we found that f'(x)
= 0 when x = 2, and that the function is increasing when x is less than 2 and
decreasing when x is greater than 2.
By applying the First Derivative Test, we can conclude that f has a relative
maximum
at
X =
(2,21)
Transcribed Image Text:Step 1 Previously we found that f'(x) = 0 when x = 2, and that the function is increasing when x is less than 2 and decreasing when x is greater than 2. By applying the First Derivative Test, we can conclude that f has a relative maximum at X = (2,21)
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