Pseudoscience, suggestion and outright lies. People want to believe, and so they will believe. You can only "control" the mind of someone who actively wants to believe it can be done, and wants to experience it.

This shit is as much worthy of /scitech/ as Feng Shui.

I've actually read this book, and it's based on science i.e. repeatable experiments (enough times that the results practically cannot possibly be attributed to chance)

He spends a lot of time talking about that I guess for people like you! Skeptics!

Take the first line of "your answer"; rearrange to get y' = -x^3/y^3. Now differentiate wrt x. You'll get a dy/dx in the denominator, but you've already got an expression for dy/dx. Sub in and simplify and it should work (you'll need to re-use the given equation).

>>231

Fuck that ugly shit!

>>231
Nope

>>231
Nope

[; \int_0^1 \! f(x) \, dx = 0 ;]

>>231
>If root(x) is the taylor series expansion

NOPE.

If the only thing that you want to analize are block diagrams, you culd use MATLAB, i think it can give you the analysis.

Something similar to ARENA I Guess? GO torrent that if you can. Super powerful tool.

yes OP, it correlates with BPM

shrews for example live in a meth world, a lifetime in a few years

>>140
Really years? I've read that 18 months is the average lifespan. ;_;

>>127
Ah, I see. So you're speaking of the differences in scales of existence and thus in the perceived relatively of things. For example, an ant traversing a 100 meter field in comparison to a man with a 1.5 meter stride. Perception and salience have a large role in the interpretation of temporal passage as >>129 has stated. Think about the difference between a routine drive to and from work. When you try and pay attention to everything you see and pass, the ride seems more drawn out. When you learn to ignore the visual stimuli after the umpteenth commute and focus on an endless loop of music, the ride may be perceived as being shorter. But also, the rates of reactions in the brain coincide with the rate of cognition and may skew the perception of time.

so, would a microscopic human being perceive time (initially) differently than a giant human being?

I know that new experiences make time seem longer, which is why your childhood seems like such a huge chunk of your life. So i think it has more to do with lifespan than with size. The longer you live, the fewer new experiences you will have every day. After all, this is about temporal perception, not spacial perception.

I think that time is both relative to mass and perception, only problem there is that how would we know that, because there's no way to actually measure time. Sure, there are second, that's agreed value, but how do you know that one person perceives one second as as long time as someone else. What I feel, is that there actually is some particles for time, maybe invisible or so, because if time was absolute, it would be same for everyone. When it comes to black holes, they have mass so great, even light cannot escape, and I think that same applies to time. Just to clear things up, why do I believe that time has particles? I believe strictly in law of conservation of mass, and do not believe that time has a starting point, just like any atom. Sorry if I made no sense, english isn't my first language. What do you think?

>>222
That's not even a little bit right.

SAGE has been used.

>>240
(relative speeds)

relativity is pretty much based on these two concepts:
a) inertial frames of reference, meaning if you're running past me at speed x, i'm... um... standing past you at speed x
b) the speed of light is constant in any/every frame of reference

the universe will literally bend over backwards to keep both of these facts true.

>>251
err, not accelerating... that's kinda different.

the photon weiner acelertates in all yalls bumbums fuck fuck fukc im the president! 9/11 was an inside job. whoever reads this has a small weiner lol faggot. yr gay. peace bitches.

(USER WAS ON THE WRONG BOARD)

I can't think of a problem right now but I've only seen them in algebraic number theory. You might look there.

I think they've been used to solve the four square problem; that every natural number can be represented as the sum of four squares.

I have known it more as a distribution method. Artists use it all the time when bluing objects. Since they are a special case of quadratic integers they are useful in a 2 dimensional plane.

>>something proven to be smaller adding up to be the same size of a larger object.

Smaller +smaller =bigger

>>331

I think you're missing the point, what I meant is better expressed by >>170 and >>169.

So, is 99chan taking any interesting math classes this semester? I'm in Abstract Algebra and a class called Foundations of Set Theory at the moment. In the fall I'll probably take some logic related classes, I've heard really interesting things about a newer sub-field called "reverse mathematics".

The text on it is probably best suited to an early graduate student (above me, it's my goal to make sense of it), but "Subsystems of Second Order Arithmetic" is apparently the best on the subject at the moment from what I've heard.

>>333
I'm complex analysis and category theory next semester, which I'm extremely excited for.
Reverse mathematics sounds really cool.

>>333
Supposedly a higher-level approach to probability, which I'm excited for, since I failed the fuck out of stats (after completing the calc series and an intro diff eq, and intro linear alg) but really want to love it. I just can't memorize worth a damn.

>>335

Memorization shouldn't be too important in the higher level probability course, hopefully it is more proof based rather than rote mechanical slavery. Though I haven't taken any probability courses so I may be wrong.

The arts and computational sciences is like communing with the minds of other humans, while writing proofs is directly communing with the mind of God.

Of course it is. Look at all the scientific language, thorough text and charts, reliable and well known sources and that huge pile of peer reviews agreeing with the results of the hypothesis, which is clear as day, by the way.

Well, it does explain why jailbait is so popular on the chans.

mebbe history's got yet to get goin'

Threaten to blow up the teacher unless she gives you an A?

The inventor of dynamite was Alfred Nobel, founder of the Nobel peace prize.

Acetone peroxide, AP, is an extremely sensitive primary explosive which can be synthesized in an afternoon with $20 worth of drug store and hardware store chemicals.

Legend has it that the chinese discovered blackpowder, because they would sprinkle saltpeter on their meat to season it, and they noticed that when it fell into the fire and onto the charcoal, that the charcoal burned much brighter and faster, and curiosity led to experimentation.

How about going more in depth with it/ For example, the discovery of potassium nitrate. The use of dynamite in joules (or megaton)

Make your own explosives, then you will get an A++

If the notebook is internally only SATA/150, then any SSD is going to be severely bottle-necked in any i/o operations and probably of little practical benefit except for physical durability of a non-mechanical drive.

If it's just a cheapo fun system like you say, then I'd just save the coins and put any whatever old 2.5" HDD in. The rest of the system as a whole is going to be a far greater speed bottleneck than HDD access is, especially for just tasks such as coding and surfing (things like gaming and video processing are really the only HDD strainers out there).

Also, you may wanna look at some netbooks before you commit. They should have a lot superior battery lives and be a lot easier to port around; a lot faster too and even SSD friendly if you really want one. There's also a lot of Linux community documentation for many of them as *nix enthusiast really seem to love toying with them. Worth a look at any rate.

>>225
So the SSD will run on the ATA, only bottlenecked?

I was first considering buying a new ThinkPad E530c for 3400 SEK, but I don't want Windows 8 and I can't opt out. So the only solutions would be to pay another 1700 SEK for Windows 7 Ultimate or installing *nix.

And has anyone really managed to use a memory card as a HD for a laptop?

>>227
If SATA below 3, then yeah. If by ATA you mean PATA/IDE though, then yeah, even more so; you'd also need a quite fancy and bulky adapter which may not even fit in the drive bay.


>So the only solutions would be to pay another 1700 SEK for Windows 7 Ultimate or installing *nix.

http://forums.mydigitallife.info/threads/24901-Windows-Loader-Current-release-information

>>228
I see. But I don't want to run a pirated Win 7. It's simply poverty. Old ThinkPad with *nix is being thrifty.

Provided your thinkpad is sata not ide, I would absolutely recommend an ssd. They are cheap and durable provided you go for a lower (32gb or 64gb) capacity (which should be fine for a gnu/linux laptop)

>>144
Why is it that people always think extraterrestrial life is always going to enslave us? To think that they'd be in our own solar system makes it even more of an invalid idea. As far as we know, there is no signs of life in our solar system whatsoever. This means most importantly that there's nothing even close to a Type I civilization, even less a species that could travel into space. If we even do find life on Saturn's moons, I would be very surprised to find anything more advanced than something resembling a very basic fish or crab.

And another thing, I'm not trying to sound as "innocent and imaginative" as the OP, but honestly it is difficult for me to comprehend why everyone must assume that all life must be carbon based. Even all life on earth is not bound to being carbon based, there has been arsenic based bacterium found, it's public knowledge. As humans we like to assume that any extraterrestrial life is going to be just like us, bipedal two-armed upright walking carbon-based beings that want to kill or harvest any resources they can. Obviously they have to be very similar to us because we're the most superior beings that exist. Yes, it's a nice little fairy tale, but to honestly believe it 100% is a mix of arrogance and ignorance.

Sorry for the rant, these things just get to me.

>>145
http://www.latimes.com/news/science/sciencenow/la-sci-sn-arsenic-life-20120709,0,1630436.story

The arsenic based life is still up in the air, fyi.

SAGE has been used.

>>144
There's 7 billion of us we don't have to all work on the same thing.

>>145

There was this one sci-fi book where mankind had encountered three extraterrestrial cosmic civilizations about a thousand years in the future. With two of them, mankind had no physiological similarities and coexisted peacefully. The one we were similar to stepped into conflict with us immediately, for resources and territory. That seems like an all-too-probable progression of affairs, to be honest.

Saturn has the most moons and the most awesome rings because the gravitational force of Jupiter kept some of the matter from fully conglomerating with baby saturn. All the gas giants have rings, though. I think at least one of Saturn's moons could definitely have liquid water under the surface because the tidal forces from Saturn and Jupiter could heat the interior of the moon, providing thermal energy.

There's no doubt in my mind there is life on Titan and Europa.

Essentially what you would have is called a group.
http://en.wikipedia.org/wiki/Group_(mathematics)

The elements of your group would be all sequences of h and v (taking into account the relations you described), together with the empty sequence to serve as the identity.
h and v are said to act on the points which make up the cube(or equivalently the vertices).
Since the cube has 8 vertices and h and v permute them, the group you get would be a subgroup of the set of all permutations on the set of vertices. This is usually denoted S8. S8 isn't a subgroup of N, Z or ZxZ.
http://en.wikipedia.org/wiki/Permutation_group

I've never studied alg. geometry but given the first line on the wiki article, it sounds incredibly awesome.
From what I've seen in alg number theory, roots of polynomials are the shit.

which book are you reading?

SAGE has been used.

For that price range they're all more or less similar, except for particularly shitty ones such as gummies or Apple buds.

They'll be fine.

http://www.monoprice.com/products/product.asp?c_id=108&cp_id=10823&cs_id=1082303&p_id=8320&seq=1&format=2

These are considered tops on HEAD-Fi for their price point. If you're into the Hi-Fi game then check 'em out. Can't go wrong for the price. I have mine on the way.

I bought a few pairs of the monoprice ones based on >>196's post and I'm crazy pleased w/ them. Best sounding buds/phones I've ever had (disclaimer: I am music lover but not an audiophile). I gave two as presents and just ordered two more. They come in white, black and pink now too. The original silver ones are $1 off until tomorrow. So it'd be like $8 w/ shipping. I got a black and white pair as backups.

>>221 here. Just wanted to say I'm not op btw, and post this pic of the colors they come in now. The original silver was a bit odd looking.

SAGE has been used.

A lot of people like khan academy they have courses from arithmetic to calculus and differential equations.
https://www.khanacademy.org/

First of all, why the fuck are you embarrassed? You never learned it, simple as that. Anyone who would look down on you for that should be pushed over and puked on.

One thing, you say "the way" of doing things but that's just silly. There's a lot of ways of doing arithmetic. Trying different methods will help you understand what you're doing better. I hate that "make the 0 a 10" thing. But I'm kind of bad at arithmetic. I'd look at it like "adding .85 to that .15 gets me to 34, and another 6 makes 40. Then 20 gets me to 60, and another .05 gets me to 60.05. Then adding those up gets me the difference between the numbers, which is what I'm looking for.

that weird math-shame gets in peoples' way a lot and I just don't see the point of it. at least you have an interest, while learning fundamentals. that's all that matters. But yeah, khanacademy, patrickjmt, whatever. The biggest thing is to just Do Problems It is not like other subjects where you can just absorb it, you get a much deeper understanding by working through problems.

>>319
>wikipedia articles
And as a general comment, remember too about the "simple" language option, which is often very helpful for getting a "what am I even looking at" overview. The regular entries can be a little too in-depth for an initial glance.

http://en.wikipedia.org/wiki/Integral
http://simple.wikipedia.org/wiki/Integral

ILLEGITIMI NON CARBORUNDUM!

You can buy trackball replacements for Blackberries, OP. They're damn cheap and easy as all get out to replace... just do a search on Amazon for the things using your phone's model number. Also, check to see if a firmware update is available to open up a few more workable apps for the device. Beyond that? See >>30. Smartphones without service *and* wifi (if this is your case) are pretty damn worthless.

OP here does anyone know a GOOD site i can get a sim card reader/writer

Yeah really, what the fuck do we do with all these PDAs, PocketPCs, dumbphones and the like that we collect and discard over the years when a newer device comes along? Is there any way we can make money off this shit? I have so many semi-functional cell phones and devices but it seems like I should be able to put SOME use to them.

The only thing to salvage those little components cost efficiently is to melt them down in big amounts, separate the materials with a centrifuge and recycle them. I guess copper and lithium would bring the major part of the profit. Unfortunately this is nothing someone can do at home safely.

Dammit OP!

For this part of the problem, you just have to set up an equation that balances the force of the fully compressed spring with the forces due to gravity and the static friction force between the crate and ramp. This insures the spring has the maximum stopping force without pushing the crate back up the ramp. I assume you know how to do all this with Hooke's Law and whatnot.