f(x) = -x - 5x + 4x - 7. Find the open intervals on which f is concave up (down). Then determine the x-coordinates of all inflection points of f. 1. f is concave up on the intervals 2. f is concave down on the intervals 3. The inflection points 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 wor "none". In the last one, your answer should be a comma separated list of x values or the word "none".

Question
f(x) = -x - 5x + 4x - 7. Find the open intervals on which f is concave up (down). Then determine the x-coordinates of all inflection
points of f.
1.
f is concave up on the intervals
2. f is concave down on the intervals
3.
The inflection points 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 wor
"none".
In the last one, your answer should be a comma separated list of x values or the word "none".
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Transcribed Image Text

f(x) = -x - 5x + 4x - 7. Find the open intervals on which f is concave up (down). Then determine the x-coordinates of all inflection points of f. 1. f is concave up on the intervals 2. f is concave down on the intervals 3. The inflection points 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 wor "none". In the last one, your answer should be a comma separated list of x values or the word "none".

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