<p>use the discrimate rule.</p>
<pre><code>b^2 - 4ac > 0
</code></pre>
<p>that one was 4.91 i think</p>
<p>For that 1 brass I got D..not sure what the #'s were but I'm 100% sure because I have a quadsolver on my calc and I just plugged in the values and all but D(I think it was D..or E) that gave real solutions and not imaginary</p>
<p>I got stumped on the Right triangle w/ the 15, and 5 given and it asks u to find the length of the piece to the right of "5"...and I got stumped on the double squares...hmm I omitted 6 and got 1-2 wrong..what score is that?</p>
<p>the only question i had trouble with was the Greast Integer Function.
I knew this from taking Comp Science.
[2.2] =2
[-2.2]=-3
basically, move it to the left as in a number line.</p>
<pre><code> But what was the approach for the question?
</code></pre>
<p>the triangle one i think u had to use sin(35)=15/(5+x). the squares one was messed up.</p>
<p>ur talking about f(x) = [x] and what is f(f(x))? I had NO CLUE....just skipped it :(</p>
<p>what is the one with the "which of the following's inverse is the same as the original function?"</p>
<p>I put A and C (b wasn't)</p>
<p>the greatest integer was A i think (f(x)) since after [x] is done once, the second [] doesnt affect the number anymore.</p>
<p>Are We all having the same exact test? </p>
<p>I think ETS gives different test forms.</p>
<p>i dont remember that one Joethemole. how did u have two answer?</p>
<p>Yah Joe..its A and C...A = 0 and C = 36 I think and B was a decimal so yah A/C</p>
<p>What was the approach for the problem on a square overlapping a square?</p>
<p>i dont remember that one</p>
<p>square one was 36 (its the as if the squares overlapped at right angle sine if you move the top part down it'll fill the bottom missing part.</p>
<p>the tape one was 4, it asked for the pricing not the max you could have gotten the max anyway you want ( I used calculus cuz it was the fastest) and it was 8, then since each n stood for .25.. you add .25*8 to the original $2 to get 4.</p>
<p>the 2n one is the only one I'm not sure of... if its in anyway possible for n*n to not equal n^2 then there's 2answers so I picked n=0 (in my opinion both answers are pretty bad)</p>
<p>greatest integer ([x]) was f(f(x)) as explained ealier if you do the grestest integer once, it's already an integer.. if you do it again it'll be the sam number.
anyone remembers the actual answer to the last question?</p>
<p>so its n=0 because 0/0 is undefined?</p>
<p>yea I seriously think thats a bad question though.. the only reason I picked n=0 was because if the other one was true then I dont see any reason for this one to be a worse answer than that one (omg sounds like verbal .. not math..)</p>
<p>alright, i definitely got that one wrong then. so what about the LAST problem?</p>
<p>what was that symmetrical thing on sphere?</p>
<p>I put all three, its symetrical about the center, any diameter line and any plane that extend from the diameter.</p>
<p>anyother questions? last problem?</p>