<p>quick question ya’ll, was that one question with the LRAM an underestimate or overestimate?</p>
<p>It was overestimate cuz the function was increasing.</p>
<p>Yeah, when the function is increasing it’s an underestimation for left riemann sums.</p>
<p>@NeedsHelp1212: There was a question where they gave you the velocity/acceleration as 2/t, and they wanted an expression for the total distance traveled over a certain amount of time. If 2/t was the acceleration (which is what I thought, apparently), then it’d be the definite integral for whatever amount of time of the absolute value of 2lnt. If it was the velocity, then it’d be the same thing but with 2/t.</p>
<p>Wait wth?
If a function is increasing, isn’t it Overestimate for left riemann???!!?</p>
<p>thanks, had a heart attack there. I calculated it, and it came it was lower than the actual estimation; not to mention if you were to draw a rough sketch. Just paranoid because a friend said it was overestimation.</p>
<p>Well if you draw it out, then the rectangles always come under the curve. That’s how I figure it out.</p>
<p>OMG shoot. X_X
I put overestimation …dammit probably got like a 101/108 now…</p>
<p>…do they award 6s? XD</p>
<p>Haha I wish they do…
Honestly calc is just heaven for me…</p>
<p>You should have seen me during the AP CHEM test. OMG got shafted so hard…</p>
<p>if the function is increasing a left Riemann sum would be an underestimation. Draw it and you’ll see. You always use f(x) from the left side which is going to be smaller than f(x) on the right.</p>
<p>fastneutrino: the question was like, write but do not evaluate an integral that describes the total distance traveled by the particle. </p>
<p>I found that question weird, because there was so much space for work, but it was so easy? Now, I’m questioning what I put… 2/t or ln lol. Time to move on. Not viewing this portion of the forum until July. No point in worrying now.</p>
<p>@ Oscar…
Yeah I drew the right riemann sum…and thought it was overestimation cuz of that…sad life</p>
<p>I know i got a high 5 but i’m getting worried since almost everyone at my school said it was easy, even people who took academic precal last year and have c’s in the class -__- Seriously, this years frqs were laughable compared to the 2008 frqs, and the cut off for a 5 in 2008 (without taking points off for incorrect) is 67. [AP</a> Calculus AB curve – College Confidential](<a href=“http://mrlangemath.com/blog/ap-calculus-ab-curve-college-confidential/]AP”>http://mrlangemath.com/blog/ap-calculus-ab-curve-college-confidential/)</p>
<p>First and foremost, I would like to thank my Lord and Savior Jesus Christ for a great test! That test was smooth and here is why.
First of all, the AP Calculus AB 2012 Exam seemed much easier than past AP tests and practice tests. I have taken every practice free response test released from the College Board as well as about 8 practice tests from books such as the AP Calculus Princeton Review and the REA AP Calculus review in addition to extensive studying. The 2012 exam was much easier than most if not all of the practice exams. On the first non-calculator multiple choice section, I breezed through every question with 25 minutes to spare! Then I whizzed through the calculator multiple choice section with 15 minutes to spare! I thought I was doing something wrong!<br>
The free response questions were also easier than most practice tests. Sometimes there is a problem in the free response section that is hard to come by, especially problems dealing with related rates. But as there was no problem dealing with a related rate or some other complicated concept, I was able to solve each question pretty handily.<br>
All in all, I thank God for that test and pray for that 5.</p>
<p>Go AP Calculus AB 2012! I was part of it! - rockets53</p>
<p>Honestly speaking if you get like a 70% on the MC and get like 5/9 on every FRQ thats’ like a guranteed 5.</p>
<p>The curves are APs are just pathetic. People with like a mathematical 70% on the entire test can get a 5…like what is this madness…</p>
<p>They should make 5s more harder to get. Thus raising the prestige level -> better for college admissions. :)</p>
<p>Be careful what you wish for. Besides, they’re more for college credit than admissions.</p>
<p>what was the answer to the one on prt B g(x)=f(f(x)) with the graph? we had to solve for g’(7) i think?</p>
<p>I agree. While I don’t complain about the relative easiness of getting a perfect score on the AP exams, I do believe College Board needs to restructure its AP scoring systems to better distinguish the best (most prepared) students from good (slightly less prepared) students.</p>
<p>rockets, sounds like you absolutely abused the test. good job man. i wish i was as prepared as you, lol, but i lacked the motivation. :P</p>