<p>II and III is the answer. That's right =] </p>
<p>I think we're all 50/50 on the circles vs. 4 points. Argh. I wish someone knew for sure xD</p>
<p>I'm 99.9% sure on the circles vs. 4 points one. There have been questions like that on the practice tests I did.</p>
<p>Yeah, someone previously said that they saw nearly the exact same question on a practice exam in Barrons. Is that where you saw it too?</p>
<p>Yep. And I got it wrong because I forgot that a line in 3 dimentional space has a cylinder of point equidistant from it. So I was certain on that question this time.</p>
<p>i<3 pi did u get 50.7 for the law of cosines angle?</p>
<p>Hahaha. Finally... hopefully this resolves the controversy.</p>
<p>I hope I did well this time... >750 please and maybe 800 if I'm extremely lucky =] <em>crosses fingers for no more careless mistakes</em></p>
<p>aa6590: I'm inclined to say yes, but I really can't recall that well.</p>
<p>Now we need to resolve the heartbeat one :/</p>
<p>yikes....................</p>
<p>well so far, I've skipped 1 question and gotten 2 wrong...</p>
<p>wait a second....
on that sqrt question i evetually got sin2x + cos2x = 1. so i said true for all x. **** did i screw up???? does anyone else remember ever getting a trig identity for a final answer?</p>
<p>I'm almost 100% sure that the heartbeat question is 60. The funct. given was 120 + sin(pi2t), where t is in seconds. They said that the # of heartbeats is equal to the period of the function. you have to divide 2pi/2pi to get the period, 1. Because t is given in seconds, a period of 1 means that there is one heartbeat per second. thus, 60 beats in a minute!</p>
<p>so i guess my way of doing it is wrong....damn</p>
<p>lakshmi52 that was exactly what I thought!</p>
<p>the function wasnt for heart rate was it? was it for pressure</p>
<p>no lakshmi's right. thats what i got. im talking about that quadrant II/III/I question where i solved the equation and got a trig identity. we're all nervous.haha im more nervous now than i was before the test</p>
<p>Yeah it was for blood pressure.</p>
<p>shatender, i did exactly what you did with the trig identity stuff. i ended up with all values of x as well. but if you graph -cosx and sq.root(1-(sinx)^2), they do not form the same curve. also, if you think about it, anything that comes out of the sq. root will be positive. thus, -cosx must be positive and this will only happen when cosine is negative (II and III quadrants). i feel your pain :(</p>
<p>damn. that makes -3.5 from a perfect score (assuming its two circles and not four points lol)</p>
<p>aight its 12:11 AM here in chicago and im goin to sleep now. gnight everyone and i wish y'all the bes of luck =D. dont lose sleep overit like ive been doing. we're all gonna go to kick-ass coleges. and be succesful. and...yeah</p>
<p>i foujnd it weird that there werent any questions on limits approaching infinity,etc. that sucks cuz im in BC II and it woulda been easy points...</p>