alleryA function is defined to be concave up on an interval when its derivative is:
AConstant
BUndefined
CIncreasing
DDecreasing
Answer & Solution
Correct answer: C. Increasing
1. Concave up means the curve bends upward.
2. That happens when the slope keeps getting larger.
3. So the function is concave up when its derivative is increasing.
_Source: OpenStax Calculus Volume 1, Chapter 4, Applications of Derivatives._
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