alleryA function whose derivative is zero throughout an interval is:
ALinear
BPeriodic
CQuadratic
DConstant
Answer & Solution
Correct answer: D. Constant
1. A zero derivative means no rate of change at all.
2. The value of the function therefore never moves.
3. So the function is constant on that interval.
_Source: syllabus Mathematics Part II, Chapter 7, Integrals._
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