EvanED wrote:That is exactly the answer that I came up with that I think matches the expectation. Though like I said, there are a lot of assumptions built into that, some of which could realistically be violated.

Fabulous. Thanks a lot!

- Thu Mar 27, 2014 8:48 pm UTC
- Forum: Computer Science
- Topic: [Homework] Determining Position of Variables on Stack
- Replies:
**5** - Views:
**4111**

EvanED wrote:That is exactly the answer that I came up with that I think matches the expectation. Though like I said, there are a lot of assumptions built into that, some of which could realistically be violated.

Fabulous. Thanks a lot!

- Thu Mar 27, 2014 8:40 pm UTC
- Forum: Computer Science
- Topic: [Homework] Determining Position of Variables on Stack
- Replies:
**5** - Views:
**4111**

I suspect I know what the instructor is expecting, though it relies on quite a bit of assumptions. (Even the question of which has a higher address relies on quite a few assumptions.) Let's set aside that. My hint, which is designed to work with the hint you were already given, is that x and y will...

- Thu Mar 27, 2014 7:13 pm UTC
- Forum: Computer Science
- Topic: [Homework] Determining Position of Variables on Stack
- Replies:
**5** - Views:
**4111**

A procedure's local variables are allocated storage on the runtime stack. The order in which they are laid out in an activation record, however, is unspeci ed. For example, if a procedure declares int x,y;, what is the order of x and y's storage in the record? Explain how you can determine this with...

- Tue Feb 18, 2014 8:01 pm UTC
- Forum: Computer Science
- Topic: Segmented Least Squares with a twist
- Replies:
**0** - Views:
**4007**

I was practicing my dynamic programming when i came across this variation of the segmented least squares problem. Everything is the same as the original SLS problem except you also get an integer k as input where the piecewise linear function consists of at most k segments. Also, unlike the original...

- Mon Jul 30, 2012 5:33 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1088: "Five Years"
- Replies:
**23** - Views:
**8206**

http://xkcd.com/943/

also reminds me of of those cyanide and happiness job interview comic:

http://www.explosm.net/comics/1896/

also reminds me of of those cyanide and happiness job interview comic:

http://www.explosm.net/comics/1896/

- Wed Apr 04, 2012 2:38 am UTC
- Forum: Mathematics
- Topic: Integral help
- Replies:
**11** - Views:
**4353**

++$_ wrote:You can't integrate 1/(u^2-1)?

Try partial fractions. (Yes, you could also do it with hyperbolic trigonometric functions, but that will just get you the same answer in a more obscure form.)

ah. yes. I understand now, thank you very much

- Wed Apr 04, 2012 2:34 am UTC
- Forum: Mathematics
- Topic: Integral help
- Replies:
**11** - Views:
**4353**

If you want to do u 2 /(u 2 -1), just add and subtract 1 from the numerator to get 1 + 1/(u 2 -1). That you should know how to do. could you please expand on the adding and subtracting 1 to the numerator? If you add and subtract you'd get; (u 2 +1-1)/(u 2 -1); i can split it up to integral 1 + inte...

- Wed Apr 04, 2012 2:22 am UTC
- Forum: Mathematics
- Topic: Integral help
- Replies:
**11** - Views:
**4353**

++$_ wrote:I started with u = sqrt(1+e^{x}).

That got me to (1/2)log(u^{2}-1) (unless I messed up). That should be doable. (Just factor u^{2}-1).

yes, then id do integration by parts from there. But that ends me up with a u^2 / (u^2-1) which i have no idea about how to do

- Wed Apr 04, 2012 2:06 am UTC
- Forum: Mathematics
- Topic: Integral help
- Replies:
**11** - Views:
**4353**

I'm completely stumped on how to start this integra, any help would be much appreciated!! http://img443.imageshack.us/img443/1237/20120403095923pm.png edit: no hyperbolic trig since we haven't touched on that yet. i tried usubstituting sqrt(1+e^x) and then doing integration by parts but i ended up b...

- Tue Mar 27, 2012 8:17 pm UTC
- Forum: Mathematics
- Topic: Theoretical Linear Algebra Question
- Replies:
**3** - Views:
**950**

Professor sent out an email better explaining the problem: We have discussed linear indendence of vectors. A collection of vectors v_1, v_2, ...,v_n is linearly independent if the only way for c_1v_1 + c_2v_2 ... + c_nv_n to be equal to the zero vector is for c_1 = c_2 = ... = c_n = 0. We can make t...

- Tue Mar 27, 2012 7:38 pm UTC
- Forum: Mathematics
- Topic: Theoretical Linear Algebra Question
- Replies:
**3** - Views:
**950**

So we know a vector in Rn is linear independent if c1v1 + c2v2 + c3v3...cnvn = 0 (where c is a constant and v is a vector). We know that matrices follow the same rule. However, suppose S1, S2....Sn are nxn invertible matrices meaning they are linear independent. Is there any vector v in Rn such that...

- Wed Mar 21, 2012 7:18 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1032: "Networking"
- Replies:
**123** - Views:
**39618**

As a student in the Penn State college of engineering, all I got from this comic is...

damn business majors

damn business majors

- Fri Nov 18, 2011 6:01 am UTC
- Forum: Language/Linguistics
- Topic: Understanding Chinese?
- Replies:
**9** - Views:
**4274**

So I'm a native english speaker but I'm conversant in mandarin chinese. Both my parents speak mandarin and I've always spoken to them in mandarin throughout my life. When I watch movies I pick up 90% of the words and can figure out the other 10%, same with conversations and stuff between other fluen...

- Fri Jul 01, 2011 4:23 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0919: "Tween Bromance"
- Replies:
**147** - Views:
**53070**

i just spent about 5 min trying to find the first word in the alt text: vebiage.

It didn't even show up in urban dictionary! then i noticed that the OP spelled it wrong XD

It didn't even show up in urban dictionary! then i noticed that the OP spelled it wrong XD

- Mon May 02, 2011 3:02 am UTC
- Forum: News & Articles
- Topic: Osama bin Laden is Dead
- Replies:
**952** - Views:
**85987**

- Fri Feb 25, 2011 6:22 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0865: "Nanobots"
- Replies:
**90** - Views:
**30168**

why is xkcd frontpage still the flying cars and not the nanobots?

- Tue Nov 09, 2010 11:32 pm UTC
- Forum: Coding
- Topic: [solved] little bug
- Replies:
**1** - Views:
**612**

Hey guys, im doing a short little java coding and i can't seem to get hte right answer public int roundSum(int a, int b, int c) { a=round10(a); b=round10(b); c=round10(c); return a+b+c; } public int round10(int num){ int ten =num %10; num= num-(10*ten...

- Tue Nov 02, 2010 5:34 pm UTC
- Forum: Science
- Topic: Insider Science Jokes/Lingo
- Replies:
**129** - Views:
**28826**

I wish I was DNA Helicase so I could unzip your genes (jeans). *laugh track*

- Mon Oct 18, 2010 6:58 pm UTC
- Forum: Fictional Science
- Topic: What is the weight of a gold?
- Replies:
**45** - Views:
**9043**

Would this work:

Buy gold at central america

go to Alaska (ignoring transportation costs)

*since there is ~ 43 more kilometers of crust @ the equator than @ the poles, each kg of gold will weigh a bit more*

sell gold at alaska

go back to central america (ignoring transportation costs)

repeat

Buy gold at central america

go to Alaska (ignoring transportation costs)

*since there is ~ 43 more kilometers of crust @ the equator than @ the poles, each kg of gold will weigh a bit more*

sell gold at alaska

go back to central america (ignoring transportation costs)

repeat

- Mon Sep 06, 2010 12:43 am UTC
- Forum: Science
- Topic: Do Cars Flip?
- Replies:
**14** - Views:
**3064**

I had an argument with my dad about cars flipping on the high way. I was pretty sure that given a car like camery or any "low to the ground" cars aren't able to flip going on a flat surface. Only top heavy cars (mini vans/trucks/jeeps) flip. Low to the ground cars only flip if they're on a...

- Sat Aug 28, 2010 10:49 pm UTC
- Forum: Science
- Topic: Dreaming as an evolutionary advantage
- Replies:
**31** - Views:
**3872**

The old Freudian theory was that dreams were expressions of our unconscious desires, but none of the cool psychologists still follow Freud these days. Besides, if Freud was right far too many people have a sick fetish for being forced to take pop quizzes in their underwear. Others have suggested dre...

- Mon Jul 26, 2010 2:45 am UTC
- Forum: Science
- Topic: nose pain?
- Replies:
**5** - Views:
**1742**

i don't have allergies, uhh...hay fever and cold prob not cause i have no other symptoms. rubbing nose maybe? although i do'nt see how i rubbed my nose

- Mon Jul 26, 2010 2:09 am UTC
- Forum: Science
- Topic: nose pain?
- Replies:
**5** - Views:
**1742**

So i have this pain in my nose and i was wondring if anyone knows about it. the area in question is shown here: http://img821.imageshack.us/img821/8392/nosey.jpg http://img821.imageshack.us/img821/5871/60461115.jpg http://img821.imageshack.us/img821/4113/belownose2329.jpg The pain is: almost negligi...

- Mon Jun 07, 2010 7:59 pm UTC
- Forum: Music
- Topic: Song Identification!
- Replies:
**458** - Views:
**200914**

I found a song in this game and i'm really curious what the song it, could someone tell me?

http://www.ferryhalim.com/orisinal/g3/bells.htm

http://www.ferryhalim.com/orisinal/g3/bells.htm

- Wed Jun 02, 2010 10:44 pm UTC
- Forum: Music
- Topic: Music Theory help
- Replies:
**5** - Views:
**1792**

got help don't need i think

- Wed Jun 02, 2010 9:55 pm UTC
- Forum: Music
- Topic: Music Theory help
- Replies:
**5** - Views:
**1792**

i'm taking a class in music theory and composition 2. Our assignment was to take a simple melody (i chose twinkle twinkle) and add chords to it. Except instead of the basic triad major chords, we have to add very bad sounding but theoretically correct chords. I was wondering if anyone could take a l...

- Tue May 18, 2010 10:26 pm UTC
- Forum: Science
- Topic: what would happen?
- Replies:
**6** - Views:
**1192**

yes i know the world isn't a perfect sphere and what not, but it would generally become a sphere-like-shape. I'm saying sphere to disregard any possibilities of a cone or semi circle, like if for some supernatural reason tar can't harden in the south pole or something

- Tue May 18, 2010 9:07 pm UTC
- Forum: Science
- Topic: what would happen?
- Replies:
**6** - Views:
**1192**

Well since Obama is now hitting the recession hard core by stimulating the economy with jobs dealing with internal improvement, I stumbled across this question. There's been a lot of fixing of the roads around my house, all the major roads have been ripped up and then replaced with really nice roads...

- Fri May 07, 2010 11:46 pm UTC
- Forum: Hardware
- Topic: hard drive
- Replies:
**2** - Views:
**791**

I have this Dell Inspiron model PP29L. The hard drive failed hard on me and I need to buy a new one. I'm just wondering, what do i tell the people at my local best buy? here's the manual: http://www.dell.com/downloads/global/corporate/environ/comply/insp_1526.pdf can someone here figure out if there...

- Fri Apr 23, 2010 7:53 pm UTC
- Forum: Science
- Topic: backpack zipper science?
- Replies:
**5** - Views:
**899**

I go to high school and I've been using the same backpack for three years in a row (freshmen -> junior). throughout the years, my backpack has taken a really hard beating from whatever I use to do as a freshmen/sophmore. One day, though, I noticed that something really strange happened to the zipper...

- Mon Apr 12, 2010 4:37 pm UTC
- Forum: Mathematics
- Topic: probabilty of envelope?
- Replies:
**11** - Views:
**3079**

You're assuming independence again. If you want help with something you actually have to demonstrate some effort. If you want to think about the three envelope case, list out all the ways that the slips can appear in the envelopes. There are six ways total, so getting fractions with denominators of...

- Mon Apr 12, 2010 4:28 pm UTC
- Forum: Mathematics
- Topic: probabilty of envelope?
- Replies:
**11** - Views:
**3079**

so say u have 3 envelopes and 3 letters: to get only the first one right it is (1/3) * (2/3) * (2/3) = 4/27. then to get only the second one right it'd be 4/27, and then 4/27 for only the third. If we add these together (being first or second or third) I get 4/9 as the probability of exactly one rig...

- Mon Apr 12, 2010 3:59 pm UTC
- Forum: Mathematics
- Topic: probabilty of envelope?
- Replies:
**11** - Views:
**3079**

alright so i kind of see how i'm wrong...but I have no idea how to approach the problem. I wikied derangements and, since i'm only at a high school level math, the formulas and stuff were just a jumble of nonsense.

Anyone here could possibly step me though this?

Anyone here could possibly step me though this?

- Mon Apr 12, 2010 1:44 pm UTC
- Forum: Mathematics
- Topic: probabilty of envelope?
- Replies:
**11** - Views:
**3079**

So I found this question and I'm not sure if this is right. Pretty much it goes like this: You have five envelopes and five paychecks addressed to five different people. The paychecks are randomly inserted into the envelopes. What is the probability that (a) exactly one paycheck is inserted in the c...

- Sun Mar 21, 2010 8:08 pm UTC
- Forum: Logic Puzzles
- Topic: Bear Puzzle
- Replies:
**23** - Views:
**17504**

My thought (which didn't go anywhere): Newtonian mechanics tells us what the bear's acceleration was (assuming no initial velocity, and constant acceleration): \begin{eqnarray*}d &=& \frac{a}{2}t^2\\ -19.617\:\textrm{m} &=& \frac{a}{2}(2\:\textrm{s})^2\\ a &=...

- Fri Mar 19, 2010 2:19 am UTC
- Forum: Logic Puzzles
- Topic: Bear Puzzle
- Replies:
**23** - Views:
**17504**

i'm not sure if it was said (quickly scanned spoilers and the prominant one was not the right answer) so i'll say what i think: Gravity accelerates an object downward at 9.80665m/s. This means in 2 seconds the bear SHOULD travel 19.6133 but the bear travels 19.617, a bit too fast for normal accelera...

- Mon Nov 30, 2009 11:51 pm UTC
- Forum: Logic Puzzles
- Topic: Mastermind
- Replies:
**19** - Views:
**3801**

I'm not sure how many people here know the game Mastermind, but its a board game where you try to guess a sequence of colors that someone else knows. The official page is here: http://mastermindboardgame.com/content/editions/2422.1.1.1?pc=fs25&gclid=CIjc4MT0s54CFdlD5god_3WulA and the wiki page i...

- Sun Nov 29, 2009 6:12 am UTC
- Forum: Science
- Topic: moving gas?
- Replies:
**11** - Views:
**1696**

I was riding on my school bus one day and from the back of the bus i heard "oh gross, who ripped one?" This got me thinking, the bus is moving at, say 40mph down the road. If you were to fart, wouldn't the gas be thrown to the back of the bus, and out the windows and stuff before it could ...

- Tue Nov 24, 2009 2:31 pm UTC
- Forum: Language/Linguistics
- Topic: How few words can you use to learn a language?
- Replies:
**34** - Views:
**7452**

I remember it being 1,500+ characters in chinese to be considered literate

- Tue Nov 24, 2009 2:24 am UTC
- Forum: Mathematics
- Topic: Unit circle
- Replies:
**15** - Views:
**89680**

I'm in 11th grade honors pre-calculus class High school and we started the unit on trigonometry and what not. My teacher showed us the Unit Circle (http://www.math.pacificu.edu/~emmons/Math226_F08/UnitCircle.gif). So we had a test on it, given the angle in radians ie: 7π/6 or 11π/6 and stuff like th...