<p>What is the curve usually on ap calc tests? I took the AB and calculated…at worst I think I got around a 65…is that in 5 range?</p>
<p>I think it’s normally around 67/108 = 5 on AB but to be safe I’d say 70/108 = pretty likely to get a 5</p>
<p>@yanm2498 </p>
<p>Expect at least 69 points for a minimum of a 5. Like ChemCramyea said, 70/108 is the safe zone.</p>
<p>Everyone is interpreting 2B wrong. It is not asking for a volume but a specific numeric value that is found by changing the r function into terms of x, diferentiating, ad then evaluating for pi/6 </p>
<p>to elaborate: </p>
<p>x = rcosx</p>
<p>dx/dtheta = product rule of r times cosx</p>
<p>then you substitute in r = 3-2sin(2theta)</p>
<p>then plug in pi/6 and simplify. </p>
<p>Yeah – that’s what we did using a calculator. </p>
<p>x = rcosn = cosn (3 -2sin2n); now just take the normal derivative at x = pi/6. </p>
<p>@ChemCramyea @Amad27 Ohh, sorry, I am totally new to this, I’m a sophomore and this is my first ap test. So it’s by points…how does this work percentile wise? I heard something about multiplying points by 1.2 but I’m not sure…thank you 
</p>
<p>For FRQ 5 part b on the AB test, would it be okay if I justified my answer with Rolle’s Theorem instead of the Mean Value Theorem?</p>
<p>What are the curve predictions for this year for BC? What composite score is the boundary for a 5? I have a feeling I might be close to the boundary. 70 or lower composite for a 5 is fine by me. </p>
<p>Do they make a different curve for the International Form and the NA ones or are they all lumped into one/ </p>
<p>@nearea I think they were looking for mean value theorem although rolle’s theorem could apply…you might get partial credit? </p>
<p>@yanm2498 </p>
<p>I think Rolle’s theorem is the most applicable answer since f’(1) and f’(-1) were both equal, the function is differentiable, and Rolle’s theorem says that in this instance there must be a point where the first derivative (the first derivative of f’ being f’’) must equal zero. Rolle’s Theorem is literally the most applicable theorem for this question (more applicable than MVT at the very least).</p>
<p>Rolle’s theorem is a corollary of the mean value theorem. Either will be fine in this case. </p>
<p>@SuperN0va Don’t you need Rolle’s theorem to prove MVT?</p>
<p>ugh I keep obsessing over this test and using appass to predict my score, but even with what I believe to be the worst case scenario, it is a borderline 4-5. I can’t wait till July to find out. Does anyone else have this problem? </p>
<p>@Chromium I’m on the same boat as you. I messed up the dumbest thing on the FR, and I’m terrified that is going to pull me down to a 4 :(</p>
<p>@sparkl3 if you still have the google doc saved can you please send it to me? thank you!</p>
<p>@yanm2498 No problem buddy. It’s my first AP Exam too, but I had been researching about this stuff.</p>
<p>For the multiplying by 1.2 you are indeed correct.</p>
<p>The multiple choice is scored from 0 --> 54, </p>
<p>You actually multiply</p>
<h1>correct x 1.2272 —> The max, if you get 44/44 then 44 x 1.2272 = 53.996 = 54</h1>
<p>So if you get 100% on the multiple choice but on 16 on FRQ, you still in for a 5! </p>
<p>Rolle’s theorem IS the mean value theorem. It’s a special case when on [a, b] f(a) = f(b).</p>
<p>I think Rolle’s theorem or MVT, both would be fine 
</p>
<p>@RandomHSer </p>
<p>If you want to learn more about calculus-proofs take a look at Tom Apostol’s Calculus or Spivak’s calculus. Amazing texts.</p>
<p>(ONLY if you are interested in gaining deep knowledge of pure calculus, with proofs etc…)</p>
<p>you’re welcome <a href=“http://home.roadrunner.com/~alcosser/AP2014.html”>http://home.roadrunner.com/~alcosser/AP2014.html</a></p>