November 2008 SAT Subject Test: Math Level 2

Test Preparation SAT Subject Test Preparation
341

<p>Already consolidated on PG 20...</p>

<p>Here is a consolidated list of the thread</p>

<p>** Note: * denotes "DISPUTED" or unsolved/disputed throughout the thread. Bolded in disputed answer means the more supported answer of the two.
? denotes "w/o support", not discussed at length and was supported by only 1 person **</p>

<p>IN NO PARTICULAR ORDER:</p>

<p>arithmetic series of third term & seventh term, 6th term 23, 2nd term 7: 11 (D)</p>

<p>there was something with 3 is a factor of x^3+18x^2+11x+c or something and you had to find c. The answer was -21</p>

<p>Log(base10)sqrt(x) = a. What is log(base10)x^2: answer = 4a (plug in check)</p>

<p>x^2+2x+4=(x+2)^2+a(x+2)+b,find a: answer: -2</p>

<p>?f(f(x)) = -x</p>

<p>? ln (#) = ? ?</p>

<p>? Donuts problem: as the dollar amount,p, increased, d decreased by -26.97</p>

<p>? Babysitting: (32.5-2x)/3.5</p>

<p>? 2x+4 or something like that for -1000 function question: ?</p>

<p>what is g(x) graph in terms of f(x): |f(-x)|</p>

<p>Ratio of sphere w/ r and sphere w/ 2r: 1:8</p>

<p>Sum of zeros, find recip 1/x + 1/y: answer: 0.5 (1/2)</p>

<p>f(1) = -2, f(-1) = 3, find f(4): answer eq y=-2.75x -0.25: answer 11.25 (-?)</p>

<p>Polar equation graph with circle and angle 3rd quadrant, eq of circle x^2+y^2 =5: 206.6</p>

<p>n! divisible by 9 if and only if n >- 6 (greater or equal t</p>

<p>(x^2-25/x^2-5x) undefined at x value: x=5, or * x=5,0 <a href="does%200/0%20make%20it%20undefined">/b</a>?</p>

<p>equilat triangle P=6: 1, -rt 3</p>

<p>y>2x^2-1: (1,2)</p>

<p>Period of |sin x|: answer 2pi or * pi **</p>

<p>csc x & tan x problem in pi/2 <theta< pi = -.57</p>

<p>Max on [-2,4] of function: -2</p>

<p>Donuts prob: d=-24.37p+273.
For every $1 increase in p, d decreases by 24.37.</p>

<p>Sum of positive integers 1+2+3+4...225: 113 (November 2008 SAT Subject Test: Math Level 2)</p>

<p>cos f(x) = sin x: pi/2 - theta (cofunc ident)</p>

<p>*Rotation around XY of tri to cone: 1500 pi or 2000 pi</p>

<p>Sum of inf geometric sequence 1/(5)^x = 2.25 (2 1/4 on test)</p>

<p>f(x+2) graph shift left: y-inter (0,4)</p>

<p>? Similiar triangles sin A/sin B : 3 or 6</p>

<p>*Boxplot graph, I - greater means A>b, II - standard dev, III - range: either I only or I & III</p>

<p>(x-3)^2 + y^2 =11. (x+2)^2 + y^2 = r^2.: answer: 1.68 rounds to 1.7</p>

<p>find NON-NEG productive of zeros: answer: Non Negative product of zeros is x(x+6) b/c 0 times -6 is 0, which is a Non Negative number.</p>

<p>probability question about numbers whose sum is 10 and product is 20: 1/2 (ab=20 and a+b)</p>

<p>3^x + 1 as lim of x approaches infinity: 1</p>

<p>? lim as x approaches infinities for func of 3x^2/?: ?</p>

<ol>
<li><p>Probability -1<x<1: pi/4</p></li>
<li><p>Parallelogram question: 53</p></li>
</ol>

342

<p>Bigweight, if it was the SAME number of hours, there would be no need to set up an equation! you would be able to simply SOLVE for the number of hours he worked at both jobs. In other words, the answer would be a constant, not a function.</p>

343

<p>damn^^^ maybe i was wrong after all....is these interpretation problems that make me get 780 like on the SAT I...oh well..colleges still accept 780!</p>

344

<p>ha i made a careless mistake on regular sat math as well and had a 780. good thing reading redeemed me.</p>

345

<p>reading sucks for me....as i only got a 690, i wish colleges would care more about the writing..(i got an 800 (no brag) :)</p>

346

<p>Yes, logic problems screwed me over on this test ):</p>

347

<p>I got something like A for the babysitting question</p>

348

<p>can someone confirm that it's A?</p>

349

<p>I don't think the babysitting one was A :\ sorry dude</p>

350

<p>So it wasnt 2pi
Max on [-2,4] of function: -2 <--- I thought this was 2. something</p>

351

<p>^ We're still not sure about that one even though the major consensus is pi....I guess we'll see.</p>

352

<p>lolilaughed,
the ln problem, I believe was ln (4).</p>

353

<p>I can't believe the pi, 2pi debate is still going on. Geez.</p>

<p>I have yet to see a good argument as to why its actually 2pi, only a few people (who I feel pretty sorry for) who put down 2pi and really don't wanna believe they got it wrong. I know, I'm in the same boat on that function where 0 and 5 are possible answers (although I swear 0/x is different than x/0 :D ).</p>

354

<p>^ Thanks Pynne. </p>

<p>@ Future, I'll change it to pi.</p>

355

<p>Already consolidated on PG 20...</p>

<p>Here is a consolidated list of the thread</p>

<p>** Note: * denotes "DISPUTED" or unsolved/disputed throughout the thread. Bolded in disputed answer means the more supported answer of the two.
? denotes "w/o support", not discussed at length and was supported by only 1 person **</p>

<p>IN NO PARTICULAR ORDER:</p>

<p>arithmetic series of third term & seventh term, 6th term 23, 2nd term 7: 11 (D)</p>

<p>there was something with 3 is a factor of x^3+18x^2+11x+c or something and you had to find c. The answer was -21</p>

<p>Log(base10)sqrt(x) = a. What is log(base10)x^2: answer = 4a (plug in check)</p>

<p>x^2+2x+4=(x+2)^2+a(x+2)+b,find a: answer: -2</p>

<p>?f(f(x)) = -x</p>

<p>? ln (4) = ?</p>

<p>? Donuts problem: as the dollar amount,p, increased, d decreased by -26.97</p>

<p>Babysitting: (32.5-2x)/3.5</p>

<p>? 2x+4 or something like that for -1000 function question: ?</p>

<p>what is g(x) graph in terms of f(x): |f(-x)|</p>

<p>Ratio of sphere w/ r and sphere w/ 2r: 1:8</p>

<p>Sum of zeros, find recip 1/x + 1/y: answer: 0.5 (1/2)</p>

<p>f(1) = -2, f(-1) = 3, find f(4): answer eq y=-2.75x -0.25: answer 11.25 (-?)</p>

<p>Polar equation graph with circle and angle 3rd quadrant, eq of circle x^2+y^2 =5: 206.6</p>

<p>n! divisible by 9 if and only if n >- 6 (greater or equal t</p>

<p>(x^2-25/x^2-5x) undefined at x value: x=5, or * x=5,0 <a href="does%200/0%20make%20it%20undefined">/b</a>?</p>

<p>equilat triangle P=6: 1, -rt 3</p>

<p>y>2x^2-1: (1,2)</p>

<p>Period of |sin x|: answer pi (see thread for details)</p>

<p>csc x & tan x problem in pi/2 <theta< pi = -.57</p>

<p>Max on [-2,4] of function: -2</p>

<p>Donuts prob: d=-24.37p+273.
For every $1 increase in p, d decreases by 24.37.</p>

<p>Sum of positive integers 1+2+3+4...225: 113 (November 2008 SAT Subject Test: Math Level 2)</p>

<p>cos f(x) = sin x: pi/2 - theta (cofunc ident)</p>

<p>*Rotation around XY of tri to cone: 1500 pi or 2000 pi</p>

<p>Sum of inf geometric sequence 1/(5)^x = 2.25 (2 1/4 on test)</p>

<p>f(x+2) graph shift left: y-inter (0,4)</p>

<p>? Similiar triangles sin A/sin B : 3 or 6</p>

<p>*Boxplot graph, I - greater means A>b, II - standard dev, III - range: either I only or I & III</p>

<p>(x-3)^2 + y^2 =11. (x+2)^2 + y^2 = r^2.: answer: 1.68 rounds to 1.7</p>

<p>find NON-NEG productive of zeros: answer: Non Negative product of zeros is x(x+6) b/c 0 times -6 is 0, which is a Non Negative number.</p>

<p>probability question about numbers whose sum is 10 and product is 20: 1/2 (ab=20 and a+b)</p>

<p>3^x + 1 as lim of x approaches infinity: 1</p>

<p>? lim as x approaches infinities for func of 3x^2/?: ?</p>

<ol>
<li><p>Probability -1<x<1: pi/4</p></li>
<li><p>Parallelogram question: 53</p></li>
</ol>

356

<p>If the period for Sin(x) is 2pi, the only thing that abs(sinx) will change is making all negative values positive instead. What WOULD change the period would be changing it to sin2x, etc no?</p>

357

<p>np. :]
and also, I'm not sure if I'm late on the argument over that x =/= 5, 0
but I'm pretty positive that 0/0 is undefined, because we went over limits recently in my AP Calc class and 0/0 is what my teacher called "super-undefined". but to check, I graphed the function/equation into my calculator and in table, I selected 0 for the x-value and the y-value came out to be ERROR.</p>

358

<p>Oh man...this test was quite difficult today. But a lot better than I thought it would be. Barron's questions are twice as hard...</p>

<p>Skipped like...8. Other than that, minus three, I think. Would that be good for...750 maybe? 700+ at least, right?</p>

359

<p>Changing it to sin(2x) would obviously change the period but...</p>

<p>The period of a normal sine wave is half positive and half negative (each for pi), if you make the negative half positive, you now have a "period" that repeats the same thing twice. This is no longer a period, it is now two periods.</p>

<p>That is why pi is the answer.</p>

360

<p>^ I agree, 0/0 is a hole on the graph (meaning it'll seem like a line) but at the point there is no y value. </p>

<p>@ Zorrox, I don't understand what you're talking about. I'm too dumb D:</p>

<p>@ AuContaire...That would be good for a 700+ probably 700-750.</p>