Official December SAT II Math 2 Thread

<p>theoneo, where are you finding these score conversions?</p>

<p>really the one o?</p>

<p>what was the one with the four and eight vectors</p>

<p>pure conjecture?</p>

<p>Look it up in a test book.</p>

<p>I got 11 for the vector question.</p>

<p>the vector one was about 11 i think...</p>

<p>the angle between them is 50 degrees, but if you add them the angle is 130 degrees. use law of cosines... c = sqrt(4^2 + 8^2 - 2<em>4</em>8*cos(140))</p>

<p>By Sparknotes's curve I think I got somewhere between 770-790... thanks for this thread, very useful!</p>

<p>There was a question 1/2x³+2x²-2>0 ?</p>

<p>There was a question A thing decreases by half every time. m{0)=6, what is the equation ?</p>

<p>The answer to the inequality was like -3.7<x<-1.0 and="" x="">1.2</x<-1.0></p>

<p>I got 2^n in the denominator for the decay question.</p>

<p>midway: i think the answer was E for your first question...</p>

<p>-3.7 < x < -1.2 and x > 1, or something like that</p>

<p>midway, the answer i put was either D or E. i think it was Mo/(2^n)</p>

<p>There was a question with a fisherman, with a graph y=8.?-4.2(pi/3(h-3))
[may have got the equation completely wrong.] what was the amplitude?</p>

<p>There was a question with a x^3 graph, what could be the roots ?</p>

<p>The answer for the fisherman question was 8.4 (2 x 4.2).</p>

<p>The roots question was a > 0, b = c, and c =/= d.</p>

<p>is c!=d c≠d?</p>

<p>yeah it is</p>

<p>i don't remember the fisherman question. where was it in the test?</p>

<p>also, i just remembered one question i wasn't sure about. It gave three points of function f(x). They were like (-2,-1), (-1,2), and (1,2) or something. There was no picture. Then it asked how many zeros there were. I put the choice that "there has to be one." I think that was either choice A or B.
Anyone else remember this problem?</p>

<p>The points were (-2,-1), (-1,2), and (2,1). The graph would have had to cross the x axis between -1 and -2, so the answer is there is a root between -2 and -1.</p>

<p>The fisherman problem asked for the difference between the max and min height of the fishing rod or something. It was 12.7-4.3=8.4 I believe.</p>

<p>the answer was that there had to be at least one, since the function is continuous (it's a polynomial) and has a sign change</p>

<p>oh, okay. i remember the fishing problem now.</p>