November 2010 MATH 2 Discussion Thread

<p>nevermind, i think it is 2pi again. graph it. it goes from -3.14 to 3.14, thus 2pi.
lawd i put 1, but i had no idea</p>

<p>Perfect pixie- haha lucky. it was D. because the absolute value makes it go back to 2pi for the interval.</p>

<p>from the range -4 to 4 i got 5 possibilities!</p>

<p>2^-4 = 4^ -2
2^-2 = 4^-1
2^0 = 4^0
2^2 = 4^1
2^4 = 4^2</p>

<p>i think (-2,1) (2,1) and (0,0) all worked but idk</p>

<p>Eee! I thought D was 2pi. Missed two till now. I cant believe I forgot the number of inches in a feet :(</p>

<p>For (-4,4) answer= 5.</p>

<p>EDIT- D was 2pi? Was it not? pianoman says it was 1!</p>

<p>michael your right, i forgot about the 0s :/</p>

<p>damn it…michael i think ur right</p>

<p>Perfect pixie:
answer to the cos interval problem was (D) or 2 pi.</p>

<p>but didnt they have to be consecutive (m,n) so the only possiblities are
-4,-3
-3,-2
-2,-1
-1,0
0,1
1,2
2,3
3,4</p>

<p>i wasnt sure about that one but thats how i read it</p>

<p>Michael you’re upto 27 posts in no time at all!
I edited my prev post to 5. It was five.</p>

<p>Okay if D’s correct, I’m down to one wrong till now.</p>

<p>wow. -1 at least. i hope the curve is nice…i thought it was much easier than the oct one though</p>

<p>consecutive? aw poo</p>

<p>haha i know. i really want to see how i did :P</p>

<p>perfect pixie i said it was 2pi^</p>

<p>for the 1 i was talking about the one with the range of -4,4</p>

<p>well michael im not positive the wording confused me does anybody else remember?</p>

<p>so what was the right answer for the vector one?</p>

<p>Who doesn’t? :slight_smile:
We’ll have you creating consolidated lists of answers in no time, haha. I never had the patience to do one.</p>

<p>what were the four numbers for the standard deviation one? I just added two to each one and put it in my calculator. i hope it was right!</p>

<p>1.1, 1.1, 1.3, 1.3 i think without adding box weight</p>

<p>answer was 0.1</p>

<p>Oh yeah, I think my vector one is wrong too. So dumb of me, instead of -ab(cos[theta]) I used +ab(cos[theta]).
Two wrong.</p>

<p>i think 11… correct me if i’m wrong</p>