<p>How do you find the solution to the ln x problem?</p>
<p>The highest point wasn’t 4. That was your calculator deciving you because Ti-84’s don’t draw asymptotes well. Ti-89 does.</p>
<p>Did anybody else get like 4 or 5 C’s in a row in the first 15 questions?</p>
<p>Yeah, early on I had C, something else, C, C, C, C, something else, C. That really unnerved me because I’ve seen three of the same letter in a row but not four (and usually even when I answer the same letter just three times in a row it turns out I missed one). I checked over them and they all seemed right, though, so I left it like that. I’m glad this happened to someone else.</p>
<p>Dang it.</p>
<p>So far I omitted 50, and got 49, 46 (i think), this asymptote one, and possibly another 2 wrong. Will a raw score of 43 yield an 800?</p>
<p>What was the question in which they gave some function with a point (-10, 10) or something of the sort?</p>
<p>@smile, the answer to your question is I and III. if you wanna find the solution to a system of equations, you either find the x value of the intercept or you can set them equal to each other, solve for 0, and then find the zeros of the resulting function.</p>
<p>Yup, I and III represent here too :)</p>
<p>Ohhhhhh ok ok I understand now.
Man, I missed some pretty stupid questions =[
Like I understand all of the ones I missed now and they seem really easy but I overthought a lot of them…trying to make them more complicated than they really were</p>
<p>Really? TI-83 DO draw the asympotes…at least the vertical ones and I didn’t see any on my calculator when I plugged in points and traced the graph, the highest point I could get it to was at 4 but I’m sure a TI-89 is more accurate…</p>
<p>Oh well, I hope I only missed 4 questions…because I also omitted the last one and that’s like the borderline to getting a 800…</p>
<p>missing 4 and omitting 1 is a raw of 44, which will definitely be an 800. As long as you didn’t make any other mistakes, I wouldn’t say you’re borderline.</p>
<p>Tetrisfan, are you talking about the graph with the asymptote and it’s asking about the graph of the inverse function? I think the answer was 3 (the location of the asymptote), because the inverse of infinity is zero.</p>
<p>Random747, how did you get your answer for the question asking for the value of ln x? I couldn’t for the life of me figure out a way to solve that one. Today I graphed them and found the answer that way (too bad I didn’t think to do that during the test), but I don’t know how to solve it algebraically.</p>
<p>On the test I never solved it algebraically. I graphed ln x and e^(-x) on my calculator and just found the point of intersection. My brain still hurts because I took this test after midterms, so I’m not going to even try to think of how to do it algebraically.</p>
<p>what did you guys get for the one where x approaches 2? do the numerator and denominator cancel out to yield x = 5?</p>
<p>I think the answer was 5 to that question, but my memory could be wrong. I solved it using calculus (l’hopital’s rule. Only question that calculus is helpful for on the test :D)</p>
<p>Yeah. The equation was (x^2+x-6)/(x-2) When you factor the top you get
(x+3)(x-2)/(x-2). Then you cancel out the (x-2) so it’s just (x+3) left. So when you put in 2, 2+3 =5. So yeah, I’m pretty sure the answer is 5.</p>
<p>anyone get ddddddedddddddddedddddde somewhere in there?</p>
<p>^ I might have toward the end but i was kinda rushed and just wanting to get through all the questions that I stopped noticing</p>
<p>I DID get a whole bunch of Cs around the middle I think and I went back and checked those 4-5 questions a million times to make sure I didn’t make a stupid mistake on one of them haha I hate when that happens!</p>
<p>What’s considered a borderline to getting a 800?</p>
<p>If I miss 5 questions…omit one…that’s a 43.
Is a raw score of 43 usually 800…? In one of the CB practice tests a 43 was actually a 790 but on the other one it was 800.</p>
<p>I think a 44 is pretty much a guaranteed 800. I think 43 is borderline and depends on the curve.</p>
<p>does anyone remember the exact answer choices for that one problem with (2x,2y) asking for the distance?</p>