<p>What value did you get? I still think you, also, found the wrong area.</p>
<p>yah</p>
<p>intergral from -2 to 2 of 4-x^2 minues the intergral frim -1.25 to 1.25 of 1.57-x^2</p>
<p>just did it again comes to 8.04 rounded, which was a choice, c i belive [ to abd i ommitted it :( ]</p>
<p>You did not need to find the integral; it was just a cone with radius 3 and height 2.</p>
<p>What's the curve usually for this test?</p>
<p>not that one, although i did do thatwith intergrals, forgot the pi in my haste</p>
<p>kman1456....
i think we are talking about the parabola which was divided into a hump at the top and a trapezoid at the bottom. The cone was a different problem, where a triangle in the first quadrant was revolved around the x axis. And i agree....you didnt need to integrate for the cone problem.</p>
<p>I just used simple estimation because I ran out of time to actually carry out the calculus. Actually you could have used the conic equation; I think the chord of length 5/2 was the latus rectum, but I am not sure.</p>
<p>If you view this link, I made a quick sketch in paint</p>
<p>You can see here that your value is just a little higher than the actual value that they were looking for.</p>
<p>You got 8.03 when the real value is 7.92</p>
<p>answer is 7.92</p>
<p>i see what your trying to say, i am not sure about the exact wording on it but if what i remember is right, i am right ... if what you are saying is right you are right</p>
<p>but 8.04 was a awnser choice so i dont know</p>
<p>The exact wording was the area of the TRAPEZOID. Not the area under the curve.</p>
<p>8.04 was an answer choice because they knew some people would try to use calculus.</p>
<p>^ what were some of the other choices?</p>
<p>a little less then 9 and some random numbers like 18</p>
<p>does one quesiton matter i ddint even answer hta tone since it was so late in the test</p>
<p>I had no clue how to do that trapezoid question, so I skipped it (I actually thought it meant the area under the curve...sigh). It was the only question I skipped, though. Surprisingly, I found the test pretty easy. I was panicking the night before because my most recent practice test gave me 610 (!). However, I was able to answer all but one of the actual questions on the test. I guess Barron's and even Rusen Meylani's practice tests do overprepare you.</p>
<p>What was the (1, 5, 10, 100)... question? I can't seem to recall that one.</p>
<p>i am prob wrong, nothign new i always overthink myself in cases like this</p>
<p>The (1,5,10,100) question asked what is the probabilty that when two of the numbers were randomly chosen their sum is greater than 100.</p>
<p>The total number of choices is 4C2 = 6
And the only way you can get a sum greater than 100 is 1 with 100, 5 with 100, and 10 with 100.
Therefore 3/6 = 1/5 = .5000</p>
<p>Windslicer, thanks. I got 0.5 too.</p>
<p>This thread just made me VERYYYYYYYYY happy.</p>
<p>Just finished the test, and I didn't omit or guess on any, and for all of the ones you guys mentioned, that's what I got. Yayyyyyyyy I think that 800 might be possible :D :D :D :D</p>