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Topic: [ap-calculus] FRQ 2008 #1
Replies: 1   Last Post: Mar 13, 2012 4:18 PM

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 Kristin Visser Posts: 44 Registered: 10/11/10
[ap-calculus] FRQ 2008 #1
Posted: Mar 13, 2012 2:17 PM

FRQ #1 from 2008 is an area and volume question. In part b the region whose
area is asked for is totally below the x-axis. I know with "accumulation"
type problems it is typical to consider "area" below the x-axis as
negative. In cases where the area between two curves is being found must it
always be given as a positive value? The answer key includes the integral
of the upper function minus the lower function. Would it be correct to tell
my students that in area problems of this sort the area value should always
be stated as a positive even if below the x-axis?

~Kristin

--
Mrs. Kristin Visser
Chicago Christian High School
Physics, Honors Physics, and AP Calculus Teacher
Cross Country and Track Coach

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Course related websites:
http://apcentral.collegeboard.com/calculusab
http://apcentral.collegeboard.com/calculusbc
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Date Subject Author
3/13/12 Kristin Visser
3/13/12 M. Roulette