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AP Calculus BC MCQ
\(f\) continuous on \([a,b]\) has rel max at \(c\), \(a < c < b\). Which true? I. \(f'(c)\) exists II. If \(f'(c)\) exists, \(f'(c)=0\) III. If \(f''(c)\) exists, \(f''(c) \leq 0\)
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