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College Discussion / SAT and ACT Tests & Test Preparation / AP Tests Preparation / Mathematics & Computer Science

usnfilms
Registered User Posts: **68** Junior Member

Discuss the questions for the AP Calculus AB exam for May 9, 2012.

I had form O, I don't know if there were other forms, but keep that in mind when posting.

I had form O, I don't know if there were other forms, but keep that in mind when posting.

Post edited by usnfilms on

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## Replies to: 2012 AP Calculus AB Test Discussion

283Junior Member557MemberWhen can we discuss specific questions (or are we allowed to?).

28New Member68Junior MemberWhat did you guys get for the related rates problem in the calculator section? it was about some guy walking away from a telephone pole at a rate of 4 ft/sec or something like that and it asked for the rate of change of his shadow? I guessed A, which was like 1.5 ft/sec

45Junior Member28New Member27New MemberOk can someone verify this for me? Apparently AP uses the same exam writer for 3 years...which is why 2012's questions were similar to last years.

Seriously, that egg question(#5) was pretty much the same thing from last year's landfill problem.

For the last part of #5, did you guys get the constant to be -ln(81)?

102Junior Member68Junior MemberI do remember getting -ln(81) for the constant in last part of #5.

@johnhughzy

are you confident that B. 2.666 is the right answer? only reason I ask is that I guessed and I'm trying to keep track of all the ones I got wrong so I can get a sense of how I did.

Also, (at everyone), there was a problem near the end of the calculator section where it gave you the velocity function and it asked at what time would the particle would return to position 0. I was between D.) X = 1.976 (or something like that) and E.) 2.876 (or something like that), and I ended up saying E. What did you guys get?

1New Member557Member68Junior MemberThere was one difficult problem on the non-calculator section where you had to get the derivative of like xsin(3x)... or something and I remember saying C. or D. but that was a guess. what'd you guys say?

anyone remember what they put for the one where it was like g is the inverse of f, and f(c)=d f '(d)=a, what does that tell us about g? (wording/notation may not be correct). I remember putting B. but that was another I guessed on. I guessed on a total of 5 problems I believe.

Edit: wasn't really a guess, but I wasn't confident I solved it right

66Junior MemberWould do you think the curve will be?

557Memberxsin(3x) is just product rule and chain rule

I think I got g'(d)= 1/a

66Junior Member