AP Calculus ABmediummcq1 pt
For , which statement about is true?
A. has a point of inflection at because .
B. is concave down at because .
C., but has no point of inflection at because does not change sign.
D. has a local maximum at .
Explanation
Core Concept
is zero at but positive on both sides, so the concavity never changes. A point of inflection requires a sign change of .
Correct Answer
C, but has no point of inflection at because does not change sign.
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