Using the following infromation please answer the questions in the image. Let f(x)=20−x−x2. Find the open intervals on which f is increasing (decreasing). Then determine the x-coordinates of all relative maxima (minima).

College Algebra (MindTap Course List)
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ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
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Using the following infromation please answer the questions in the image. Let f(x)=20−x−x2. Find the open intervals on which f is increasing (decreasing). Then determine the x-coordinates of all relative maxima (minima).

 

1.
f is increasing on the intervals
2.
f is decreasing on the intervals
3. The relative maxima of f occur at x =
4. The relative minima of f occur at x =
Notes: In the first two, your answer should either be a single interval, such as (0,1), a comma separated list of intervals, such as
(-inf, 2), (3,4), or the word "none".
In the last two, your answer should be a comma separated list of x values or the word "none".
Transcribed Image Text:1. f is increasing on the intervals 2. f is decreasing on the intervals 3. The relative maxima of f occur at x = 4. The relative minima of f occur at x = Notes: In the first two, your answer should either be a single interval, such as (0,1), a comma separated list of intervals, such as (-inf, 2), (3,4), or the word "none". In the last two, your answer should be a comma separated list of x values or the word "none".
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