<p>I dominated it. 5 for sure.</p>
<p>One or 2 free responses I had minor trouble on (meaning that I'm not 100% sure on the answer, but it still has a good chance of being right). And 1 multiple choice I got wrong for sure, and I'm sure I got a few more wrong that I'm not sure of. But I'll be shocked if I got worse than a 5.</p>
<p>oh.</p>
<p>"The message you have entered is too short. Please lengthen your message to at least 10 characters."</p>
<p>I thought the MC was okay (although I'm a bit concerned about the calculator part; I got some strange patterns of letters). I skipped one question.</p>
<p>FRQ were hard. I have a feeling I made a lot of mistakes. I ran out of time for the calculator part (because I didn't read one question carefully and had to do it all over again), so I had to rush through the non-calculator part in order to finish. Not to mention I lost my eraser and took time looking for it. I didn't realize how to do some of the easy parts until after the test. Dang it!</p>
<p>I'll be happy with a 3. If I fail, my calculus teacher will probably never speak to me again (she had so much faith in me). :(</p>
<p>I got raped on the free response but did pretty well on the multiple choice. Hope all of you did terribly so the curve is low for me :)</p>
<p>Just wondering, how did you guys tackle the pond volume question?</p>
<p>And you CAN discuss the free response questions 48 hours after the test. You just can't discuss the MC.</p>
<p>pond problem was common on both AB and BC
with that said, just remember that V = integral of A(x)
you should remember the limits of integration
then Area = bh
you were provided with h
you knew the base (radius)
so you just plugged and chugged....</p>
<p>sorry for being vague; i don't want to get in trouble for discussing :(</p>
<p>ya i thought that problem was tough also.... but u just had to integrate it:P i thought there were other problems that were difficult too like at the end....and i left like 3 of them blank and who knows if i will get the other 3 right lol im hoping to get at least a 3 i hope..... the calculator multiple choice part was easier than i expected and the mc were alright.</p>
<p>Did anyone notice how on the MC calc section there was a ton of the same letter until the very end?</p>
<p>Totally nailed a 5 but the FRQs took some work to do.</p>
<p>Since it's now been 48 hours we can talk.</p>
<p>1 d) was a volume of known cross-sections problem, similar to 1 c). In 1 c) we were told that R was the side of a square, so you simply integrated side squared from 0 to 2. For 1 d, the base of R was the "length" of a rectangle, and the depth was (3-x), so you integrated side times the base, from 0 to 2.</p>
<p>I actually completely blanked on 3b and c, but nailed every other part of free response--there were maybe 5 mc questions i had issues with.</p>
<p>3b. You just had to optimize the volume, they gave you the rate. You just set 2000 - R(t) = 0.
I got sqrt(t) = 5, t = 25.</p>
<p>Then yeah, if you get part b, part c is easy. Just 60000 + fnInt(2000-R(t),x,0,25).</p>
<p>the whole thing was easy. 1d use cylinders. u have height and radius. just 2(3.14)fnint ,(x)f(x),x,0,2 if i remember numbers right. for 3b you have the rate at which its entering and rate at which its leaving. because you have the RATE it implies it means it is the first derivative, so find the zeroes and use first derivative test to find maximum time. it is 25. for 3c you have the starting volume. and because until time 25 the amount entering exceeds the amount leaving, verified in part b, you will do 60,000 + (3.14)fnint, 2000-400(t)^.5, or something like that if i remember numbers right</p>
<p>I did it a different way. I found the average value of the depth (3 - x) of the pond, and took the area found in part a) and multiplied it by that average depth. I think it was a bit easier than setting up a nasty product integral (even though your calc can do it in a few sec).</p>
<p>By the way, how well do you have to do to get a 5? I nailed the free response (except for a section or two where I might have made some mistakes), and skipped 3 multiple choice. The rest of the MC I was pretty confident about.</p>
<p>Beef: I don't think that method works, actually. That way you get 2 for an answer, but the other way you get 8.something.</p>
<p>i hated the non - calculator MC part, thought it was hard.
loved Calcularot MC and FR parts, easy.
I hated the oil one in FR, have no idea how to figure it out.
lets hope i pass, i think i f-ed up on the calculations for ln and logs at FR in end.
i might have did this: integral of lnx= 1/x</p>
<p>hey I'm just wondering if the starting point for a 5 in calculus is really 60-100+, and if so what would be the equivalent to getting a 60 (m/c and frq scores)?</p>
<p>No, it works, I remember getting 8 or 8.something . Volume of an extruded part is just area of the base times the height. If you find the average height of a solid with an irregular height and treat it like an extruded part, it still works (I consulted this with my physics teacher, who knows more calculus than all the calculus teachers in my school combined).</p>
<p>i did it the same way as Beef. It definitely works.</p>
<p>does anyone know when the scoring guidelines for the FRQ will be posted on collegeboard?</p>
<p>I would just review the FRQ with my teacher but I haven't been in class since a day before the exam, other AP test...</p>