Math Level 2 - January

Test Preparation SAT Subject Test Preparation
181

<p>3 / C(4, 2)</p>

182

<p>I got 1-x^2 too! You had to use the cos^2(x)+sin^2(x)=1 property and then do some stuff to solve it right? I hope I put that; I'm almost certain I did! I just messed around with some stuff and got that! I was really close to marking A or B or something...but eventually got it. I think that was C though, right?</p>

183

<p>Which question was that? I thought #3 had to do with finding some sort of equation. And yes, it was 1-x^2 because you replace f(sin(x))=1-sin^2(x) with f(x)=1-x^2</p>

184

<p>yeah you're talking about the same thing</p>

185

<p>What was number 3 of which you are speaking, tedjn?</p>

186

<p>equation with exponential stuff I think</p>

187

<p>


</p>

<p>I don't know. Maybe it was nothing.</p>

188

<p>For equation with exponential stuff, I just plugged into my equation solver on my calculator. I hope I got it right. :(</p>

189

<p>Tedjn: what??</p>

190

<p>Meh, I don't know what I was talking about. Never mind.</p>

191

<p>lol I was talking about the way to do the random numbers adding up to >100 problem :P</p>

192

<p>Oh, oops, lol. I see it now.</p>

193

<p>I like how we all signed that thing on the bottom about not sharing materials online. If college board decides to track profiles down and file it, we are all screwed.</p>

194

<p>I like how we all signed that thing on the bottom about not sharing materials online. If college board decides to track profiles down and file it, we are all screwed.</p>

<p>I'm guessing raw score of 44 won't get 800 this time. Knowing that the December test was pretty hard, and the college board sets curves before getting the score, maybe 3 wrong will be 800.</p>

195

<p>they'll have to identify us by address... which isn't easy</p>

196

<p>3 wrong for an 800!?</p>

<p>Damn that is gay</p>

197

<p>How about the volume of a this figure revolved around the x axis. Was the answer 18 or something?</p>

198

<p>I got 6pi for that so yeah around 18</p>

199

<p>lol some dude in my room was bragging on and on about how he did an integral to solve that</p>

200

<p>haha that takes even longer.</p>

<p>When I saw that, I was like, I could use integration to solve that! But then, I was like, wait a minute...its so much easier the other way!</p>