<p>k2kankan… that’s a different question. that answer was [8,8]. i’m talking about another one.</p>
<p>xShadow63, </p>
<p>That problem you could solve in a matter of seconds using matrices. You have three formulas. The number of questions in Test 1 (x) + Number of questions in Test 2 (y) and number of questions in Test 3 (z) then you have the total points. So you have one equation for one student involving all variables and so on.</p>
<p>Then, you set up your first matrix using the coefficients of the equations—it will be a 3 x 3 matrix. Then, you set up another one using the total points: it will be a 3 x 1 matrix. After that you have [A][x,y,z]=[Total] and so you multiply by the inverse of the coefficient matrix to get at the [x,y,z] matrix and the answer will be 2 points per question on Test number 2.</p>
<p>Wow, I completely forgot about (x,y) vs. [x,y]. This is annoying; I should’ve prepared myself better… grr I hope I didn’t do too badly.</p>
<p>irun4fun: sorry, the question your talking about was the infinite answer, since you could have the perpendicular line from infinite angles in the z plane (not sure if thats the best way to phrase it, they discussed it earlier if it doesnt make sense)</p>
<p>K2kankan, irun4fun is talking about another question;</p>
<p>Irun4fun isn’t talking about the xyz plane and how many perpendicular line can be drawn from a line in that dimension; she/he is talking about the problem that asks how many points can be equidistant from two intersecting lines. I was thinking two but for some reason, I changed it to none although I really feel like that isn’t right. Changing at the last minute=not a good idea ;)</p>
<p>Maybe I should follow xAAAx’s lead and come back Dec 22 ^_^</p>
<p>wait isn’t the question about how many perpendicular lines can be drawn from a POINT on a line in a plane? i put 1 :(</p>
<p>It’s an XYZ plane - this means that it’s 3D. I honestly just took a pencil, put another pencil perpedicular to it, and rotated around a point to figure this one out. I SUCK at envisioning 3D planes.</p>
<p>oh ok i see now… gahhhh</p>
<p>This test seemed odd in that stuff like matrices, conics, polar coordinates, etc didn’t really show up…How do you guys think that affects the curve? So instead of being able to miss/omit 7 and still get an 800, I guess this month’s curve is a little harsher?</p>
<p>Although the difficulty level on most of the questions wasn’t too high, the wording and answers were often very tricky, probably tripping up a lot of test takers.</p>
<p>for the 3 trig functions
sin2xcsc2x
2sinxcosx
and the root one,</p>
<p>was the question asking is there and x value between 0 and pi/2 that makes it 1 or do all x make it 1…?</p>
<p>I thought it was simply 1 x value that makes it equal to 1.</p>
<p>sin2xcsc2x = sin2x * (1/sin2x) = 1</p>
<p>sin (squared)x + cos(squared)x =1 so root of this is also one. I dont think 2sinxcosx = 1</p>
<p>I mean if you plug in pi/4 into the second equation it equals one.</p>
<p>I read it as is there an x value in this set that makes the equation equal one.</p>
<p>Why would it ask if it is always one and give us a set to choose an x from??</p>
<p>Since a lot of the Texas schools got shut down today, we didn’t get a chance to take the test.</p>
<p>Do you guys think the make-up rescheduled on the 19th will be more difficult? Will the change in the date/the pressure to get the grades out quicker affect the curve?</p>
<p>Hold on. I took the math level 2 Subject SAT test today and none of these questions are familiar. In fact I specifically remember the last question that I took and it was NOT a cylinder question. Do you guys think I took the wrong test? This is the discussion for the Math Level 2 subject test right?</p>
<p>^ are u international or something? my last question was something about test scores and finding out how many points each question was worth. and im pretty sure it was math II</p>
<p>do the proctors check the calculators for programs before the test starts?</p>
<p>the last question wasn’t about a cylinder for anyone, i believe… it was a question like the one coffeedrinker described.</p>
<p>oh well. yeah it wasn’t that either.
i saw something about a cylinder question as number 50. sorry I must have misread that. but I know for sure that there were no cylinder questions on my test.
No, I am not an international student. I’m worried about this and want to voice my concerns to collegeboard but wouldn’t know what to say. Can anyone help me?</p>
<p>Did your last question have to do with f(x)=…? If so, I believe you took the math level 1 subject test.</p>