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If f is continuous on [a, b] and f'(x) > 0 for every x in (a, b), then f is
ADecreasing in [a, b]
BConstant in [a, b]
CIncreasing in [a, b]
DDiscontinuous in [a, b]
Answer & Solution
Correct answer: C. Increasing in [a, b]
A positive derivative throughout the open interval makes the function rise over the closed interval.
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