272066
Then Define c as the infimum of all those x in the interval ( a , b ] for which the difference quotient of f exceeds ε in absolute value , i.e. Due to the continuity of f , it follows that c < b and | f ( c ) – f ( a ) | = ε ( c – a ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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