May 2008 MATH II

<p>what about the question where it was like</p>

<p>3cosx + 2sin2x = 0 or something like that and you had to convert it to r = (I think).</p>

<p>There was also another question where it read "which of this has to be true" an answer was a) x+y=3 and c) x^2 + y^2 = 9 or somthing.</p>

<p>what was the answer to the last one (the f(x/2) one)... it was the 0<a<1 problem and asked for what f(a/4) was.. something like that</p>

<p>i got 0.35, i think, as my answer..</p>

<p>Haha, that test...</p>

<p>I generally dislike math and only needed to take it for placement at college, and wanting a fresh start, I am really hoping to begin in lower level classes and hopefully work through the mental block I have against numbers.</p>

<p>So, to my benefit, I was at a political rally for a good part of last night, listening to both Clinton and Obama speak -- so much better than even attempting to study. </p>

<p>Good luck to everyone, please remember it's just one test and not worth losing any sleep over.</p>

<p>I think it was x^2+y^2=9</p>

<p>not sure if I remember the last one, probably because I omitted it...</p>

<p>ugh barrons was a complete waste of time!</p>

<p>completely agreed</p>

<p>hmm so what was the letter answer to the last question? the one asking for f(a/4) or something like that. i know what letter i put down, but i dont remmeber what the number was hahaha</p>

<p>and for the polar one i described earlier, anyone? =/</p>

<p>ugh i know how to do all the barrons problems but then when i see the "easier" ones on the actual testtt i went blank</p>

<p>ugh waste of timeeee</p>

<p>i should have settled for like a more accurate preparation booklet
nowww i think im gonna retake this...ugh</p>

<p>i was confident too and then blah
i really wanted a 800 but i skipped problems so thats out of the question</p>

<p>oh ya...... to answer my own question. if you get either a raw score of 42 or 43, you should get an 800. there's hardly a curve on the 2c. and i think anything after 42 or 43, you just subtract by tens and twenties.</p>

<p>the answer was x^2 +y^2 = 9.</p>

<p>The question was:
x=3cosx and y=3sinx then which of the following has to be true?</p>

<p>(3cosx)^2 + (3sinx)^2
= 9(cos^2(x) + sin^2(x)) (IDENTITY)
=9(1)
=9. so x^2 + y^2 = 9.</p>

<p>And, yeah 42-43 is 800. 40-42 is 760+ i believe? Probably 770+ actually.</p>

<p>azn4eyes00:
was the first condition asking for a combo of 8 AND 3 that will give you 12?
or was it asking for a combo of 8s OR 3s that will give you 12?
or i think someone said that it was asking a combo that will give you 13?</p>

<p>anyone remember?</p>

<p>I think the question was asking for 13, whether or not it was a combo I'm not sure. </p>

<p>How do you solve the question about point C being 6 units away from plane M?</p>

<p>i think that question said something about the area blah blah distance of 12 right?
i made a right triangle with 12 being the hypotenuse, and 6 being one of the legs, found the 3rd leg which was = the radius. put it into pi(r^2) and got a number.</p>

<p>i kind of lucked out on that question since i saw a question that was PRACTICALLY THE SAME as that in barrons or kaplans. forgot. and it was in the car too :o</p>

<p>For the f(a/4) problem-</p>

<p>You are given f(x/2) = sQRT((f(x)+1)/2), and f(a/2) = 0. Change the letter x into an a in the first equation, it doesn't matter. </p>

<p>Basically-the only piece of information we need to know to find f(a/4) is f(a/2). This is all we need because the relationship between a/4 and a/2 is exactly 2:1. They have given us f(a/2) = 0</p>

<p>f(a/4) = sQRT((f(a/2)+1)/2)
f(a/4) = sQRT((0+1)/2)
f(a/4) = sQRT(1/2)</p>

<p>Which is choice B.</p>

<p>ant you show off lol</p>

<p>about barron's wasting your time.. </p>

<p>i was really surprised when I saw standard deviation. i mean, barron's didn't even TOUCH that thing! the last time i learnt that was a year ago so it was really faint in my memory. i have a feeling that that question was dead easy...</p>

<p>i think what everyone should do is buy at least 2 books from different companies for each test and go through them at the same time. Finishing them is not so important because at least you see SAT II from two different perspectives. </p>

<p>for me, i bought both Barron's for SAT II lit and math IIC and found out that the real test was a little different from what I was used to. kinda sad, but ah well...</p>

<p>so the prime number question (i think 4th to last), how in the WORLD do you do that??</p>

<p>anyone remember the answer to the one where i think they gave two functions and you had to compare them. it was a I, II, III type question. it's not the which is a function question. answer choices were like it intersects at one point, same range, and no zeros maybe. just wanted a definitive answer. </p>

<p>also, anyone remember the question about the height from point p or something? the length was 10 and i forgot what the angle was. the answer was like cos something i hope.</p>

<p>and did anyone get x for one of the problems. i can't think of the problem and it's bugging me. </p>

<p>thanks! anyone think the curve will be higher?</p>

<p>i can't edit my post above =/ so for the height problem, was it 10tan, which was B?</p>

<p>I remember using tan too.</p>

<p>For the problem about the 10tan thing you guys are talking about... I vaguely remember the quesiton. Something like this:
Point P is 10 miles away from the BOTTOm of th pole, and the angle of elevation of P to the TOP of the pole is 42degrees (or something, doesnt really matter). So then, you use Tangent to find the HEIGHT. The answer would be 10tan(degree of angle).</p>