June 2010: Math II

<p>@RustGust do you remember 39? was it the parametric equation? </p>

<p>and #40? thanks so much</p>

<p>I have no idea what the numbers of questions were lol.
sorry, man…</p>

<p>Dont remember to be honest. The tests one big blur.</p>

<p>does anyone have a clue what the curve will be like?</p>

<p>Im praying the curve is less than a 45 for 800</p>

<p>I thought the test was pretty easy until the last ten or so problems. :confused: I feel most people are finding the test either really easy or really hard, so I’m not sure what that means for the curve.</p>

<p>Hopefully it means 43 will be the lowest raw score for an 800. : D</p>

<p>I’m positive the parametric question was #42, I don’t know how that helps with anything though</p>

<p>does anyone remember the question that wanted you to find the sum of the values?</p>

<p>it was something like 1/(some number)+…+…+1/(n-1)+1/(n)=?</p>

<p>Can someone write out that question and explain how to solve it?</p>

<p>it was 1+(1-1/2)+(1/2-1/3)+(1/3-1/4)+…+(1/n+1 - 1/n)
I think. I might’ve gotten the signs mixed up.
This is a telescoping series. Meaning the -1/2 and the +1/2 cancel each other out, the -1/3 and the +1/3 cancel each other out, as do the -1/4 and +1/4, all the way to -1/n+1 and 1/n+1. There’s nothing to cancel out the first two 1s and nothing to cancel out the -1/n, so in the end you’re just left with 1+1-1/n (or +1/n, whichever it was), which is just 2-1/n. Or 2+1/n if my signs are backwards.</p>

<p>What is the MIN. amount (raw score) do you need to get at least a 700? Please Must know,lol. Is 11 skipped and 8 wrong high 600s or a 700?lol damn… Was dying on this test</p>

<p>It’s probably somewhere around a 36 raw score. So that’s like a bit less than 12 wrong.</p>

<p>For the practice tests in my Kaplan book (which is more or less reliable; interpret as you wish), a raw score of 35 equals a scaled score of 800. For skipping 11 and missing 8, the raw score is 50 - 11 - 8 - 8*0.25 = 50 - 21 = 29, getting a scaled score of 640.</p>

<p>I don’t understand why ln .27 = e^-.27</p>

<p>There’s no way.A raw score of 35 means you could skip over a quarter of the test and get an 800. The College Board book was a 43 was the lowest possible 800.</p>

<p>woah if thats the case, then guessing is less penalizing than skipping the questions since getting 8 wrong will deduct 2 points while 11 wrong is -11?</p>

<p>agreed with staller. 35 is waaay too many to miss and still get an 800. personally I didn’t find this test to be very difficult at all and I was expecting a harsh curve, but given some of the opinions of people on here saying they had trouble, maybe the curve will be a little more generous. fingers crossed!</p>

<p>Someone please tell me why ln .27 = e^-.27</p>

<p>nycdave, getting 8 wrong deducts 10 points. Each question is worth one point, so if you don’t get one right, you’re inherently down one point. The additional .25 is an added penalty taking off the total amount you got right.</p>

<p>@Ryanxing,</p>

<p>The question was asking what does ln x equal in that equation
ln x = 0.27 and then you solve for x</p>