## Search found 31 matches

Wed Feb 12, 2014 12:20 am UTC
Forum: What If?
Topic: What-if: chat thread
Replies: 123
Views: 147691

### Re: What If: It were Weds && Snowing?

Is this going to become a trend? Not complaining, just curious. I'm complaining! (Because I love this blog, but still.) It's still hours from midnight at the east coast of the USA, so Randall has a whole evening left. (it's wednesday already for CET and beyond) Previously, Randall has tended to pos...
Fri Feb 07, 2014 10:24 pm UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### Re: [Solved] Linear algebra/multivariable calc question

I'm not sure your inductive step holds. :lol: What?? I fail to see how that could possibly be. ;-) I think the linear algebra being prior to calculus makes a lot of sense just because calculus is really about finding linear approximations for functions and using that information to draw conclusions...
Fri Feb 07, 2014 6:47 am UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### Re: [Solved] Linear algebra/multivariable calc question

Hey guys, I just started Linear Algebra, and so far it's so much easier than the multivariable calculus class. Seriously, wtf? Thanks so much for your advice. I believe I can infer from induction that the most "advanced" math class is in fact the easiest. (This experience with multivariabl...
Wed Feb 05, 2014 5:41 pm UTC
Forum: What If?
Topic: What-if: chat thread
Replies: 123
Views: 147691

### Re: What If: It were Weds && Snowing?

AGHGHGH!!! Randall, you liar!!

At least the comic was updated. >:C
Wed Jan 29, 2014 8:13 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Re: Could a kid mess up a computer from 1994 through DOS?

You could corrupt the BIOS, which while it isn't technically physical harm, could render the machine unusable. Oh yeah, I didn't mean to suggest that I was just asking only about things that would physically harm the computer; just things like wiping the hard drive (or corrupting the BIOS, as you s...
Wed Jan 29, 2014 8:10 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Re: Could a kid mess up a computer from 1994 through DOS?

speising wrote:edit: ah, i may be mistaken, according to this beautiful commercial for 5, touting the undelete: http://m.youtube.com/watch?v=JwrlNwOQ9wA

Wow, Apple really has always been leagues above everyone else in the marketing department....
Wed Jan 29, 2014 8:06 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Re: Could a kid mess up a computer from 1994 through DOS?

When I was 10 working with DOS I was trying to fix a problem, the store we bought the computer from had partitioned our 10mb hard drive into 5, 2mb partitions but I needed 2.5mb to install a game. Figured out how to delete the partitions using fdisk, also deleted all my dad's business files and app...
Wed Jan 29, 2014 7:52 am UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### Re: [Solved] Linear algebra/multivariable calc question

Weird... It seems like that's the standard order, too (i.e. not unique to MIT), and a quick google search identified a general consensus that that order doesn't really make sense... What's up with that?

On to linear algebra then! Thanks for your help.
Tue Jan 28, 2014 5:47 pm UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### Re: Linear algebra/multivariable calc question

This should be covered in a first course in Linear Algebra, or in high school. I found MIT OpenCourseWare to have excellent linear algebra resources particularly professor Strang's video lectures were very instructive and helped me a great deal. But... this course is multivariable calculus, which i...
Tue Jan 28, 2014 2:30 am UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### Re: Linear algebra/multivariable calc question

Oh. Yes. Thank you. I was trying to do that backwards, but was essentially using the distributive property (i.e. your second step) before thinking of separating the terms (as in your third step). Sigh. I'm newly coming back to math, so... THANK YOU! ^_^ ADDENDUM: In my defense, I'm pretty sure I had...
Tue Jan 28, 2014 2:19 am UTC
Forum: Mathematics
Topic: [Solved] Linear algebra/multivariable calc question
Replies: 11
Views: 3277

### [Solved] Linear algebra/multivariable calc question

Hi guys, I'm trying to learn multivariable calc on my own (via MIT OpenCourseware), but unfortunately I'm an idiot (particularly for trying to learn multivariable calc on my own, obv). So, I've come across something I can't figure out on my own or via googling for help. The course notes undoubtedly ...
Mon Jan 27, 2014 11:57 pm UTC
Forum: XKCD Meetups
Topic: [US] Los Angeles area
Replies: 30
Views: 35312

### Re: [US] Los Angeles area

Yes, that would be most good. Most good indeed.
Wed Dec 18, 2013 6:00 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1305: "Undocumented Feature"
Replies: 89
Views: 63581

### Re: 1305: "Undocumented Feature"

This is one of those things, like "shibboleet" that I badly want to be true.
Wed Dec 04, 2013 3:16 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Re: Could a kid mess up a computer from 1994 through DOS?

Oh yeah, I remember those things (i.e. zip drives). I don't think his computer had one, but who knows.
Sun Dec 01, 2013 9:09 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Re: Could a kid mess up a computer from 1994 through DOS?

No, I wasn't thinking of anything physical--just something like the equivalent of deleting System32. But killing a floppy seems much more fun! :) Deleting stuff seems to be the easiest way, but I guess even then, the odds of just happening to type even just "rm" seems pretty low. I guess i...
Sun Dec 01, 2013 8:41 am UTC
Forum: XKCD Meetups
Topic: [US] Los Angeles area
Replies: 30
Views: 35312

### Re: Los Angeles area meetup

I'm in LA! :3
Sun Dec 01, 2013 8:38 am UTC
Forum: Computer Science
Topic: Could a kid mess up a computer from 1994 through DOS?
Replies: 20
Views: 11049

### Could a kid mess up a computer from 1994 through DOS?

Hey guys, This is kind of just a weird what-if, but hey, someone might find it amusing. When I was around 12 years old, my step-dad's brother had a computer that provided my first exposure to DOS. He showed me a few things (most importantly, how to get Space Quest III to run, but also a few commands...
Fri Oct 18, 2013 4:51 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1279: "Reverse Identity Theft"
Replies: 144
Views: 40932

### Re: 1279: "Reverse Identity Theft"

This is the story of email life for the past few years. I get their credit card bills (American Express encoded with only the last 4 digits of their SS# and then no way for a non customer to contact AE support), car payment info. Everything. They then get calmly written messages to please change th...
Thu Aug 29, 2013 4:48 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1257: "Monster"
Replies: 84
Views: 20005

### Re: 1257: "Monster"

BlitzGirl wrote:Sounds like a relative of the One True Cat:

So cuuuuuute!!!!
Wed Aug 28, 2013 6:52 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1257: "Monster"
Replies: 84
Views: 20005

### Re: 1257: "Monster"

Is anyone else trying to envision this monster? I'm thinking it looks like an enormous cheetah (since it needs to be able to travel as fast, and I would imagine that a cheetah that big being able to wolf down quite a number of people), though obviously it has to be smarter than a cheetah. This thing...
Tue Mar 12, 2013 9:09 pm UTC
Forum: What If?
Topic: What-If 0036: "Cornstarch"
Replies: 36
Views: 17006

### Re: What-If 0036: "Cornstarch"

I totally thought oobleck was some bullshit my elementary school teacher thought up when she couldn't think of anything else to do.
Tue Mar 05, 2013 6:23 pm UTC
Forum: What If?
Topic: What-if 0035: "Hair Dryer"
Replies: 100
Views: 34086

### Re: What-if 0035: "Hair Dryer"

This was a good one. Hysterical. Like the one about stopping a freight train with machine guns one, it is truly worthy of reading to my brother.* *: My brother, for some odd reason, doesn't like the xkcd comics, so when the What Ifs started, I said they were just from some random blog I found, and h...
Thu Dec 20, 2012 10:16 pm UTC
Forum: Mathematics
Topic: Probability of instant gratification question
Replies: 2
Views: 1385

### Re: Probability of instant gratification question

WEEEE! ^_^

That was definitely cleverer than my method. Thanks!
Thu Dec 20, 2012 9:16 pm UTC
Forum: Mathematics
Topic: Probability of instant gratification question
Replies: 2
Views: 1385

### Probability of instant gratification question

Hi all, I have another possibly (to some) fun probability question. It's FAR easier even than the other I posted, but hey, sometimes easy things are fun to do, right? I'm posting it here because I'm a bit unconfident in my calculations, so wanted to see if I was forgetting something. A couple years ...
Wed Dec 19, 2012 1:07 am UTC
Forum: Mathematics
Topic: Fun (?) office-related probability question
Replies: 10
Views: 2209

### Re: Fun (?) office-related probability question

I see. Thanks so much! ^_^
Wed Dec 19, 2012 12:59 am UTC
Forum: Mathematics
Topic: Fun (?) office-related probability question
Replies: 10
Views: 2209

### Re: Fun (?) office-related probability question

Wow, thanks!!!!

So is running through simulations the only way to answer that question? There isn't just one equation that can solve it (or a few of them)?

EDIT: Also what programming language is that, and/or what program did you use? (Sorry, I'm only just getting into programming!!)
Wed Dec 19, 2012 12:14 am UTC
Forum: Mathematics
Topic: Fun (?) office-related probability question
Replies: 10
Views: 2209

### Re: Fun (?) office-related probability question

Yes, that makes sense to me. So then how come that never seems to be the way it works out in reality? >:C I guess it really is frequency bias, or that I'd have to tally a great number of elevator trips to discern that this is indeed the case.
Tue Dec 18, 2012 11:51 pm UTC
Forum: Mathematics
Topic: Fun (?) office-related probability question
Replies: 10
Views: 2209

### Fun (?) office-related probability question

Hi everyone, Every now and then my mind comes up with (what are, to me) fun problems, and this is one of them. I've come to a conclusion, but I'm wondering if I've overlooked something, so I thought I'd post it here. Of course it's going to be screamingly easy for you math people, but as I mentioned...
Wed Dec 05, 2012 10:23 pm UTC
Forum: What If?
Topic: What-If 0023: "Short Answer Section II"
Replies: 80
Views: 22427

### Re: What If 23: Short Answer Section II

The average hurricane is much bigger than 628 square miles.That would be more like the area of a single thunderstorm. I recall reading somewhere that the average gale diameter is 300 miles. which gives an area of about 70,000 square miles. If we go with your figure we might see more intensification...
Wed Dec 05, 2012 6:57 pm UTC
Forum: What If?
Topic: What-If 0023: "Short Answer Section II"
Replies: 80
Views: 22427

### Re: What If 23: Short Answer Section II

Looking at videos of nuclear tests it seems that, even in every large explosions such as Castle Bravo there seems to be little effect on the clouds more than a few miles from the fireball. Hurricanes, by contrast, are very large convective complexes a few hundred miles across. The mushroom cloud it...
Tue Dec 04, 2012 8:51 pm UTC
Forum: What If?
Topic: What-If 0023: "Short Answer Section II"
Replies: 80
Views: 22427

### Re: What If 23: Short Answer Section II

I must say I was rather disappointed with the hurricane answer. I read the article it was linked to, but it didn't explain what, exactly, would happen if you detonated a nuclear bomb in the middle of a hurricane other than the consequent fall-out. It alludes to the fact that the nuclear bomb may not...

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