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10242010  #1 
Join Date: Mar 2010
Posts: 9

Rates of change question
Use an algebric strategy to verify that the point given for each function is either a maximum or a minimum.
x^33x ; (1, 2) so i tried finding the instantaneous rate of change before 1 and after 1 to see if its a maximum or a minimum, since if its a local max before 1 would be positive and after would be negative but i couldn't reach the solution in the back of the book. any help would be appreciated. the formula i used was the difference quotient. 
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