<p>I left 8 blank and probably got around 4 wrong. According to the PR scale, that's about a 750. I found this test pretty difficult, with many questions that seemed very unconventional. Do you think a ~38 raw score will translate into at least a 750?</p>
<p>what was number 49 again (the actual question)?</p>
<p>it was the one with the probability of picking a number that is >1 if the number was btwn 7/8 and 4/3.</p>
<p>In other questions....you had the frequency of f(x) = sin(2x-1) and the greatest possible value for (2-sinx)(3+cos5x)</p>
<p>Ohhh I couldnt get that oen! I left it blank!</p>
<p>Answers to which are (1/pi) and 12.0</p>
<p>12.0 is not what I got. My answer was 11.8</p>
<p>Care to explain your method Joe Bloggs?</p>
<p>I had an answer with 11.8, but can not recall which one it was</p>
<p>Yeah that one was 11.8. I graphed the equation and found the maximum point...which was 11.8@#%%$^</p>
<p>for the f(x,y,z) or whatever it was, I got (0,0,0)</p>
<p>for (2-sinx) to be maximum, you have sin x = (-1).
for (3 + cos5x) to be maximum, you have cos5x = 1</p>
<p>3*4 = 12.</p>
<p>Oh wait I think I'm missing something.....how'd you arrive at 11.8?</p>
<p>(0,0,0) seems right at first, but is incorrect.
It's (0,z,0) I think, which is the first option I think</p>
<p>11.8, u can use the calculator</p>
<p>it was simple...11.8. </p>
<p>the two ways to go about that were to either graph it or solve each one starting with 12 for y.</p>
<p>Either way, you would get 11.8...I think grahing it gave you a clear picture....it was one messed up graph full of hills lol</p>
<p>I got 3/4 for the 49th one... its 9/12 not 8/11 because both 7/8 and 4/3 are inclusive</p>
<p>You need to graph it, or otherwise take the derivative and set it to 0, solve for x and put it back in.</p>
<p>You can't do what you did, since the x is the same in both. If you solve your two equations </p>
<p>sin x = -1
cos5x=1</p>
<p>you don't get the same x.</p>
<p>Aight so 11.8 it is.
1. Ennjay i got that as well...everybody else seems to have got 8/11
2. The maximum value of some other function was 2.2?</p>
<p>nope it was 8/11...that 3/4 seemed too easy...anyone wanna clarify</p>
<p>For the trig one: YEA for the answer being 11.8. I used the graphing calculator too for that, I almost put down 12.0 though...</p>
<p>ennjay If you do happen to be right, I'm jumping out of my window</p>