Date: Oct 23, 2012 10:31 PM
Author: Debbie Bricker
Subject: Re:[ap-calculus] Double Derivatives

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On Oct 23, 2012, at 14:12, "Debbie Bricker" <<>> wrote:

In using the second derivative test for extrema, you may get the second derivative to equal zero when plugging in a critical number and the test then fails. Will this point then be a POI?


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