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Re: [apcalculus] Double Derivatives
Posted:
Oct 23, 2012 10:30 PM


NOTE: This apcalculus EDG will be closing in the next few weeks. Please sign up for the new AP Calculus Teacher Community Forum at https://apcommunity.collegeboard.org/gettingstarted and post messages there.  Not necessarily. Consider y = x^4. Both y' and y'' = 0 at x = 0, but there is no point of inflection there. HTH Lisa In a message dated 10/23/2012 8:35:04 P.M. Eastern Daylight Time, DBricker@cathedralcatholic.org writes:
NOTE: This apcalculus EDG will be closing in the next few weeks. Please sign up for the new AP Calculus Teacher Community Forum at https://apcommunity.collegeboard.org/gettingstarted and post messages there.   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?
Debbie To search the list archives for previous posts go to _http://lyris.collegeboard.com/read/?forum=apcalculus_ (http://lyris.collegeboard.com/read/?forum=apcalculus)
 To search the list archives for previous posts go to http://lyris.collegeboard.com/read/?forum=apcalculus



