2012 AP Calculus AB Test Discussion

<p>@NeedsHelp1212
[AP</a> Pass - AP Calculus Calculator](<a href=“http://appass.com/calculators/calculus]AP”>http://appass.com/calculators/calculus)</p>

<p>@NeedsHelp1212: That’s about a 75% on the FRQ. You need about a 65% to get a 5. So you need about a 55% on the MC for a 5. I’d assume “reasonably well” is higher than a 55%.
Does anyone know if we get raw scores with AP score reports? This is my first AP test, and I’m honestly just curious to see what I got. =P</p>

<p>Why is the curve so generous? I’m kind of surprised that I’m still easily getting a 5 despite bombing one of the free responses. And judging by the comments on the thread, it’s amazing how the majority of scores are from 1 to 3. I guess the people that join this forum are the best of the best.</p>

<p>You guys do realize that this year’s frq was very identical to 2011 frq form A? Calculator MC wasn’t too bad, except that streetlight question >< For frq #3, I realized I integrated wrong bounds so there goes another easy point…</p>

<p>The curve on most APs are pretty generous anyway, but for some reason the math/sciences are always around 65%, while others are more 70%/75%.
You also have to consider the amount of people that simply don’t prepare for AP tests. They might not have seen questions like these in class, which can make it challenging.</p>

<p>I thought it was a pretty easy exam. Just a few questions like on the MC with the shadow and a couple of others I knew I got wrong. Easier than previous years for sure.</p>

<p>I thought the AP test was pretty easy. The MC was the easiest, and there isn’t really anything to say about it. </p>

<p>The FRQ…well, I’ve done similar problems before (Many many FRQs practiced), with the exception of the differential equation involving a bird’s weight. Specifically, part B was something I didn’t see before. But it wasn’t hard to do.</p>

<p>Yes, the streetlight related rates problem is 2.667. Looked harder than it is at first. ;)</p>

<p>how many points out of 9 do you think the y=k question FRQ 1, c, was worth? 3 or 4?</p>

<p>For the birds question where had to get the equation, will I get points off if I put ln(80) as part of the e power instead of bringing it down? It’s the same thing, just not completely simplified, and a stupid mistake on my part.</p>

<p>So most of it went well. Except one thing. I had a bit of a crisis& left one calculator FRQ blank. The others were fine. I am doomed? :(</p>

<p>@PhoenixxTears</p>

<p>The back of one of the booklets said that the graders won’t deduct points for unsimplified answers unless the question explicitly asked you to simplify it. So I think you’ll be fine.</p>

<p>@PhoenixxTears: I’m pretty sure it’s explicitly stated somewhere that they accept non-simplified answers for FRQs. You should be fine!</p>

<p>okay guys (lol i made an account after stalking this thread to reply :P)
a few questions:

  1. i made kind of a really large error on the calc frq #3. i accidentally put f(x)=g(x) (i know, ■■■■■■■■ but when i realized it was too late to go back). if i based all my answers on this will i just get a 0/9? for the min, max, and inflection point parts i had the justification right but the numbers obviously wrong.</p>

<ol>
<li>for frq #2 is this the correct process for part (d)?
solve for everything in terms of y (e^y, 5-y or something like that), set up two integrals from 0 to k and k to 1 (whatever the inflection point was) add them together and set everything equal to 2.98. other people in my class divided everything by two, but the answer is still the same so i don’t know why that’s necessary in the first place.</li>
</ol>

<p>thanks everyone! :D</p>

<p>The test was REALLY easy, so the curve will be HARSH guys… get ready</p>

<p>They really can’t make the curve harsher than 75/108 (which is really harsh anyway), or else that’d be kind of ridiculous.</p>

<p>75/108 would be a HUGE change, though making the curve somewhat harsh wouldn’t surprise me.</p>

<p>for one of the frq’s, where you had to say if the speed was increasing or decreasing, what did you say? i put increasing because both velocity and acceleration were negative but im not sure now if i did it right</p>

<p>its increasing.</p>

<p>Well, it would, but I don’t know. Just looking at previous tests, this one is clearly far easier. So who knows?</p>

<p>For the Left Riemann Sum of the temperature was it 49.99 degrees Fahrenheit?</p>

<p>I kept getting that answer, but according to the given chart it made no sense cause the temperature started at 55 degrees. ■■■ I failed that 1 FRQ. I got a 9/9 on every other FRQ.</p>

<p>For the light/shadow one was 2.667 answer choice C? I just randomly guessed C.</p>

<p>And also, there was a problem where you have to interpret …“the instantaneous rate of change of s(t) at t=2”
Was the answer s’(2) or s’’(2)?</p>

<p>and for the FRQ. the particle was going LEFT from interval [3,9]. Correct?</p>