<p>I put zero too, but now that I think of it I think it is 1. The great circle is defined by 3 points. Point A, the point directly across from it (point B) and a third point, point C, which defines where the circle will be facing. Think of the great circle spinning across the axis of the diameter.</p>
<p>Oh, I understand the great circle stuff now! Darn, I got it wrong…</p>
<p>@clarinets You are using the straight line distance between A and B, which is not the same as the diameter of the circle, which might be why you got 0. However if you kinda imagine the infinite amount of circles that can be drawn inside the original sphere, one of those circles will connect/contain A and B while having the same diameter as the original sphere.</p>
<p>I still don’t see how the answer is 1. Point B was not directly across Point A. Are you guys that certain it’s 1? (fyi majority agreed it was 0 in google docs this morning before it got deleted by a ■■■■■)</p>
<p>@Clarinets
Segment AB doesnt have to be the diameter of the circle.</p>
<p>@Clarinets read the explanations i have posted on previous pages…</p>
<p>it doesnt matter where the points are. Any two points on a sphere can form a great circle. It also says so on wikipedia.</p>
<p>Curve prediction? And what happened to the google doc…</p>
<p>Alright. What do you guys think the curve will be? I’m standing at 4 wrong, 1 omitted currently.</p>
<p>The one about the x intercepts with an equation with exponents of -2x, I plugged it into my calculators solve feature and I got one answer</p>
<p>I’m guessing at -7 or -8 wrong for an 800. I’ve got 1 wrong and 1 omitted. Shame the one I got wrong is something I could have gotten right had I just thought about it a while longer.</p>
<p>Did you guys find this harder than expected?</p>
<p>The one with the x-intercepts was 1, because there was a negative zero, then on the right side of the graph it approached 0 but never reached it.</p>
<p>I found this a little easier than expected, but I have been doing Dr Chung practices (noticeably harder). So I guess the curve would be at around -6 or -7 at 800</p>
<p>I found it to be harder than expected. The time pressure was rough on this one…</p>
<p>I was doing Chung’s too, and I thought this test was simple. But the thing is, I look back and I’m like, this test was really, really hard.</p>
<p>@StanfordWOW I missed one because I didn’t multiply properly. Now that’s just sad.</p>
<p>Standing at 2-2 right now.</p>
<p>Chung’s will be harder than any Math IIC test collegeboard will give you.</p>
<p>however, in comparison the the two released practice exams. This one was comparable, if not harder, than the second released exam. That exam had a curve of -7/800</p>
<p>@mrnephew I think its mostly because we are discussing the 5-10 questions that were actually hard in the exam. That you got, lets say, 4 wrong out of the 8 we’ve discussed probably means that you will be getting anywhere from 4-8 wrong total. </p>
<p>I hope the curve’s like 8 questions or so, that would be really nice.</p>
<p>How did you guys solve the triangle/acre problem? Since we were given 2 sides and the angle in between I did Area = 1/2 * A * B * Sin© and divided by number given (50,000 something) and to get 9 acres, but it seems everyone else got 4…</p>