May 2013 - Mathematics Level 2

<p>@horusb231 because it said the mode was 8. it if were 2 and 2 then there would be 2 modes, 8 and 2.</p>

<p>Also wouldn’t the standard deviation one be median? They asked for the smallest change, and standard deviation would have been huge since it was a large number with small numbers</p>

<p>@kiwis. that’s a different question.</p>

<p>what did you guys get for the one where it had like xy^5 - 2x = 3y + x^2 and it asked something in regards to the x-axis, like how many times it went through the x-axis.</p>

<p>omgg. I did not get that. I just plugged in 0 for y since that would get you the x intercepts.</p>

<p>so for the median, mode, max question where there were many small numbers and a big number was added to it, the median would be least affected, right?</p>

<p>^rokr32 I think it’s two. just plug in 0 for y and then solve for x. -2x = x^2</p>

<p>@sidd. that is correct.</p>

<p>@jansatomg oh yeah i’m an idiot. lol i plugged in 0 for y but also for like x^2 (for some reason) </p>

<p>4 omit 2 wrong, goodbye 800 :(</p>

<p>@jansatomg you mean the answer was one. it only crossed it at x=-2.</p>

<p>^siddg911… Actually x=0 also works. :frowning: I dnt know tho. I didn’t do well this time.</p>

<p>@siddg911 i put one. but if you do jansatomg’s way, it factors to x(x+2) which gives x=0 and x=-2 right?</p>

<p>Hey guys what do you think the curve will be like on this particular test. Barrons gives 800 for anything above 44. I’m getting probably like a 43… Will that be enough for 800 you think?</p>

<p>thats my problem, if you simplify it by dividing each side by x you get x=-2 so im not sure. this test was dumb, probably will just retake it in june</p>

<p>What did you guys get for the log problem? it was like in the first 20. I think I got like 32/5</p>

<p>@sohamd. It’s either an 800 or a 790.
@booberry. i got a fraction. dont remember though</p>

<p>@siddg911 i don’t think you can divide… it’s x^2, remember.</p>

<p>i’m retaking it in june as well. i think i’ll get high 700s, but not 800 :X</p>

<p>I feel the test this time is hard as F… Even harder than Barron’s… I STRONGLY HOPE the curve will be generous this time… Any thought?</p>

<p>was it 16/49 for the multiples of 2 between 1 and 99 that are divis. by 3?</p>

<p>@jansa i agree with you. much harder than normal. never even seen some of the problems on this test especially the matrix one</p>