<p>@ Desperatechaos Yes I remember now! I definitely got an answer in the 50’s as well. But then I was wrong about the angle?</p>
<p>Ok for the abs(tan2x) one, it really confused me because try this:</p>
<p>put abs(tan2x) in your graphing calc then set your window to
xmin= -2 pi
xmax= 2 pi
xscl= pi/2
ymin = -10
ymax= 10 </p>
<p>because if you do that, the little pointy things have different heights whereas when you use ztrig, they look like they’re the same height because ztrig only goes from -4 to 4 so you can’t see the tops of the graph…</p>
<p>I dunno if that matters…but I always set my window like that for trig functions and if you do it taht way…it kinda looks like the period is 2 pi…</p>
<p>I think i missed the inverse question even though I knew the whole y=x thing
I put y = -x because the only function i could think that has an inverse equal to itself was y = x and i didnt think it could be symmetric to itself…Ahhh that confused me. </p>
<p>The one about when you graph something do you look to see where the x intersect, the y intersect or g(x)-f(x) or whatever?
Can someone explain that to me? I put where x intersect and where y intersect…I didn’t get what the third option was saying…</p>
<p>I hope 43 is a 800…this test wasn’t the hardest one (the one I took last year I thought was crazy hard) but it was wayyyyyy trickier…</p>
<p>No i believe it was 20 degrees as well.</p>
<p>0<a<b</p>
<p>III ( -xa < -xb )</p>
<p>wasnt it something like this?</p>
<p>try to put x=1 and a=2 b=3</p>
<p>-2 < -3 must be false…</p>
<p>is there anyone who remember the question?</p>
<p>Ohh i remember that question.</p>
<p>Yeah, I just plugged in numbers and I’m pretty sure I got something like that.</p>
<p>Yeah i know III worked but I think II also worked.</p>
<p>For the palm tree one i guess it was 20 degrees. All i can say is that i did tan(the angle) *distance to tree and then added 6.</p>
<p>Some others I remember.</p>
<p>There was one with the domain being [1,2] and you have to find what the range can’t be.</p>
<p>Another was where (im not sure on the exact number) sin=1/3 and cos = 1/2 or sth like that and you had to add up the angles and then find the sin of it. I’m pretty sure it didn’t matter if you did it in radians or degrees.</p>
<p>I also remember one where there was a comparison between f(x) and -f(x) </p>
<p>There was also a one with like someone dropping a stone or something and the equation was like -16x^2 - 40 or sth and it asked at what time it was at 20 feet so i took the equation, subtracted 20, and found the zero. No clue if i’m using the right values</p>
<p>There was also another one with parametric equations and it wanted to know when it crossed the y-axis. I think i got -1/3</p>
<p>Oh yeah for the 0<a<b it also said x<0. What did everyone else get?</p>
<p>If FURKANK’s equation is right then -ax<-bx does indeed work.</p>
<p>i think i did this question only II…but i m not sure because my calculator collapsed while i was taking the exam and i was totally puzzled…</p>
<p>woow i didnt see X<0. ok, you are all right =/</p>
<p>Smile614-- the “pointy things” are definitely still the same height (in fact they extend vertically without bound to signify an asymptote).</p>
<p>I agree with Latency. I made the mistake of looking at the graph of that equation where it said how many lines don’t intersect the graph? However, the calculator doesn’t show the asymptote as infinitely extending upward, even though it does. So basically it’s the calculator’s fault… haha jk.</p>
<p>Wait, for the how many lines don’t intersect the graph, it’s infinitely many right?</p>
<p>I got II and III for the 0<a<b one.</p>
<p>The line question was two. There are two asymptotes.</p>
<p>i feel like reading all these is making me paranoid about all my answers.</p>
<p>what’s the consensus? was it a hard one or an easy one? will the scale be awesome?</p>
<p>I dont remember what I put. But I hope I said infinitely many.</p>
<p>Although there were 2 asymptotes, the function spread out in every direction. Which means that any other function will eventually intersect it.</p>
<p>@Eryi and the rest- it’s two. the two vertical asymptotes don’t intersect with anything. if you plug the numbers in the equation it’s undefined. the horizontal asymptote actually passes through (0,0)</p>
<p>Function spread in every direction, every line would touch except for the two verticle asymptotes.</p>
<p>Simple as is.</p>
<p>I put infinitely many because the max and min of the graph was like 4 or something so
like y=5 wouldn’t intersect the graph…right? and you can do y=6…and so on</p>
<p>Dang it. It’s so weird…now when I put abs(tan2x) i see that the period is pi/2 and ahhhh maybe i put the wrong thing in my calculator?</p>
<p>Hope i didn’t miss too many. </p>
<p>Does anyone know the one about where you find the intersection of 2 lines
I. where the x intersect
II. where y intersect
III. some weird thing like g(x)-f(x)??</p>
<p>what was the answer to that? I didnt really understand III…so I probably got that one wrong too…</p>
<p>I know the function spread outward infinitely but the highest point it went up to was like 4 so i thought it didn’t spread infinitely up/down</p>
<p>I thought the same, which is why i said infinitely many as well. Of course I could’ve misunderstood the graph.</p>