June 2008- Math Level 2

<p>f(f(x)) iirc was 3</p>

<p>The limit of x as x approaches c disregards what happens at c. The limit is 2.</p>

<p>uh noo. the equation x2-1/x-1 you cancel out the denominator so you get x+1 then you plug in 1 to 1+1=2…</p>

<p>f(f(x)) iirc was 3</p>

<p>yeah i think i put 3 or 4 im not sure</p>

<p>for number 37 on this list, i think it was the answer before 5. something, wasn’t it?</p>

<p>no tsh1226, the limit was 2.</p>

<p>problem was (x^2-1)/(x-1)
(x^2-1) is difference of squares. (x-1)(x+1)
thus simplifies to x+1.
x->1
thus 1+1 -> 2</p>

<p>The limit question asks what value f(x) approaches as x approaches 1. The function doesn’t actual have to “get there” (be continuous at x=1).</p>

<p>I used the quadratic formula, and I had ~5 plus or minus 0.something all over 2.22</p>

<p>does no one remember the last 4?</p>

<p>Ah ha remember another one, what values can k be such that 2x - ky = 1 hits the y-axis in the xy plane?
Answer: B) All real numbers except for 0</p>

<p>yeah! only three more to go!</p>

<p>Lol I did like half of them, come on people, you can think of 3 ><</p>

<p>:/ could someone tell me wat the 222^3 lumber one was</p>

<p>I think it was 2x + ky = 1, but that doesn’t matter.</p>

<p>Ah another one! Triangle BAC has A = 43 degrees, AC = 12.43 (close enough), what is AB?
about 16.9</p>

<p>yes i think f(f(X)) was 3?!??</p>

<p>LOL if i get the missing 3 wrong then it would be 2 omit 4 wrong for me. that’s a raw score of 43. thats like a 790 no?? :p</p>

<p>I found the lumber one:</p>

<p>"h = 41(1.25)^d
L = pi(d/2)^2(h-12)</p>

<p>Find L for d = 2.25, just annoying plug and chug"</p>

<p>-Xeaqs8 (who memorized practically everything…)</p>

<p>grade inflation that’d still likely be an 800 just do something else now lol</p>

<p>HAHAHA okay =)</p>

<p>for number 32 on this list, I graphed it and the range was all numbers greater than -1.38 I think</p>