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/sci/ - Science & Math

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>> No.11041228 [View]
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11041228

>>11041224

>> No.6365653 [DELETED]  [View]
File: 161 KB, 500x500, 2iHjf.gif [View same] [iqdb] [saucenao] [google]
6365653

is there such thing as objective morality?

>> No.6259004 [View]
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6259004

Why is it impossible to come up with something that is absolutely indescribable? And I mean literally indescribable.

For instance, when attmepting to imagine a fictional universe, world or reality with different laws of physics, state and properties, one will still be able to describe it, breaking it down to similar things in our reality, comparing it and categorize it into things with already know and have experienced with our mind.

tl;dr It is literally impossible to invent, create or come up with something absolutely new that is no way, shape or form related to things in our existence, things we can experience or know of, because we could describe them with things we already know of and have experienced. So in a sense we are bound to this world, reality (whatever you want to call it) and cannot escape it or create a new one.

>> No.5408088 [View]
File: 161 KB, 500x500, 1336190171858.gif [View same] [iqdb] [saucenao] [google]
5408088

Here's a start

http://www.youtube.com/watch?v=Xcm9qsVaf0o

>> No.5357648 [View]
File: 161 KB, 500x500, tunnel.gif [View same] [iqdb] [saucenao] [google]
5357648

Anyone know how to solve this?
5 + 2/3*(4 + 5/2*(3 + 4/5*(2 +...)))

>> No.5332058 [View]
File: 161 KB, 500x500, illusion1.gif [View same] [iqdb] [saucenao] [google]
5332058

How is it possible to prove that a particular statement can't be either proved or disproved? (e.g. the Continuum Hypothesis given ZFC)

Proving that something can't be either proved or disproved seems intuitively impossible.

>> No.5313131 [View]
File: 161 KB, 500x500, optillusion.gif [View same] [iqdb] [saucenao] [google]
5313131

Any chance you guys can help?

#include<stdio.h>
#include<stdlib.h>
void avg(float a[], int, float *);
void slope(float[], float[], float *, float *, int, float *);
void intercpt(float *, float *, float *, float *);
void Rsqd(float *, float *, float *, float *, float[], float[], float *);
void prall(float *, float *, float *);

int main(void)
{
float xny[40], x[20], y[20], *xavg, *yavg, *Rsq, N=20, *slpe, *intcpt;
int i;

FILE *fin;
fin=fopen("regress.txt","r");

for(i=0;i<=39;i++){
fscanf(fin,"xny[i]");
}

for(i=0;i<=38;i=i+2){
x[i/2]=xny[i];
}

for(i=1;i<=39;i=i+2){
y[i/2]=xny[i];
}

avg(y,N,yavg);
avg(x,N,xavg);

slope(y,x,yavg,xavg,N,slpe);

intercpt(yavg,xavg,slpe,intcpt);
Rsqd(yavg,xavg,slpe,intcpt,y,x,Rsq);
prall(slpe,intcpt,Rsq);
}

void avg(list[], eN, *value)
{
float total;
int i=0;
while (i<eN){
total=total+listt[i];
i++;
}
value=total/eN;
}

void slope(why[],ex[],*whyavg,*exavg, eN, *slowp)
{
float numerator=0, denominator=0, i;
for(i=0;i<eN;i++)
{
numerator=numerator+(((why[i])(ex[i]))-((eN)(*whyavg)(*exavg)));
}
for(i=0;i<eN;i++)
{
denominator=denominator+(((ex[i])(ex[i]))-((eN)(*exavg)(*exavg)));
}
}

void intercpt(*yvg, *xvg, *bee, *ayy)
{
*ayy=*yvg-((*bee)(*xvg));
}

void Rsqd(*yavg, *xavg, *be, *ay, waii[], aexx[], *Rsquared)
{
float waicross [20], numer=0, denom=0;

for(i=0;i<20,i++)
{
waiicross[i]=(*ay)(aexx[i]) + (*be);
}

for(i=0;i<20;i++)
{
numer=numer+((waicross[i]-*yavg)(waicross[i]-*yavg));
denom=denom+((waii[i]-*yavg)(waii[i]-*yavg));
}

Rsquared=numer/denom;
}

void prall(*B, *A, *RS)
{
printf("Line Equation: y=%.3fx+%.3f", *B, *A);
printf("Value for R^2: %.5f", *RS);
}

>> No.5213481 [View]
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5213481

f(x) = |x| * (x + a) , where a is any real number over 2. Help me find out where f(x) = 0 bros

>> No.4971045 [View]
File: 161 KB, 500x500, illusion1.gif [View same] [iqdb] [saucenao] [google]
4971045

Can anyone give me an intuitive explanation of the fact that for large numbers n, the number of prime numbers <= n is approximately n / ln(n)?

It confuses the fuck out of me.

>> No.4857521 [View]
File: 161 KB, 500x500, 1304344687917.gif [View same] [iqdb] [saucenao] [google]
4857521

>>4857481
Zero, relative to you. If you were travelling at high speed relative to the box, it would appear to have a high momentum.

Think about it. Take the entire apparatus and put it sideways on a train flatcar, travelling at the speed the top piston is coming down. To someone standing next to the train, the piston appears stationary - it is now the box's base that appears to be moving towards the piston.

A moving portal doesn't know it's moving (although it could detect acceleration). So a box approaching it or it approaching the box are the same thing. Because of relativity, whatever happens must remain consistent in each observer's reference frame.

Box will shoot out of blue portal, yo.

>> No.4391603 [View]
File: 161 KB, 500x500, 1327475124536.gif [View same] [iqdb] [saucenao] [google]
4391603

YOU!! PERSONAL ARMY

...WAT DO?

The Wall of Death in an amusement park is comprised of a vertical cylinder that can spin around the vertical axis. Riders stand against the wall of the spinning cylinder and the floor falls away leaving the riders held up by friction. The radius of the cylinder is 3.8 m and the coefficent of static friction between the rider and the wall is 0.35. Find the tangential velocity of the spinning wall necessary so that the riders do not slip down the wall.

>> No.3810203 [View]
File: 161 KB, 500x500, giflol.gif [View same] [iqdb] [saucenao] [google]
3810203

bumpan

>> No.3450431 [View]
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3450431

I have two children. One of them is a boy with an inconceivably rare (and, sadly, fatal) disease. What are the odds that I have two sons?

>> No.3450342 [DELETED]  [View]
File: 161 KB, 500x500, illusion1.gif [View same] [iqdb] [saucenao] [google]
3450342

I have two children. One of them is a boy with red hair. What are the odds that I have two sons?

>> No.3424440 [View]
File: 161 KB, 500x500, tunnelswirl.gif [View same] [iqdb] [saucenao] [google]
3424440

>>3424393
Thanks anon, that concludes my research at this time.

>> No.3401887 [View]
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3401887

I've been thinking about higher-order averages (past arithmetic and geometric). When you find an arithmetic mean m for two numbers x and y, you're essentially solving the equation m + m = x + y. Similarly, for the geometric mean, you're solving m*m = x*y.

A problem arises with the next kind of mean ("exponential" or whatever you'd call it). The basic equation to solve would be m^m = x^y, except now we have the equally valid equation m^m = y^x, which would give a different answer.

I was wondering, though, if you could iteratively replace x and y with the tentative means, and "zoom in" on a single number. In other words, do this:
solve m^m = x^y for m
solve n^n = y^x for n
set x = m
set y = n
if x =/= y, repeat
Would this be guaranteed to converge on a single result?

>> No.3358554 [View]
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3358554

There are three doors. A car is behind one. Goats are behind the other two. You'd like a car. You choose Door 1. Monty walks over and opens Door 2, revealing a goat. He smiles enigmatically at you. You have no idea what he's thinking. His thought process is a complete mystery to you.

What are the odds that the car is behind Door 3?

>> No.3317238 [View]
File: 161 KB, 500x500, 1278571310556.gif [View same] [iqdb] [saucenao] [google]
3317238

Apparently /g/ doesn't know shit about electronics, so I'll ask you guys.

I'm going to buy an Arduino starter kit. What do you think of it? Any good beginner projects to try? I'm a total noob at electronics so I thought I'd try it. Any tips or tricks I should try?

>> No.3247257 [View]
File: 161 KB, 500x500, 1300047373175.gif [View same] [iqdb] [saucenao] [google]
3247257

>>3247244
Yes, behind the force is conscious and intelligent mind.

So in his hierarchy of things he has:

Matter -> Energy -> Consciousness.

Are we to assume the reverse? Or do you think consciousness creates energy? or Matter?

>> No.3211772 [View]
File: 161 KB, 500x500, 1304646337769.gif [View same] [iqdb] [saucenao] [google]
3211772

>>3211732
I am now

>>3211735
I was born very humble cause I have to have this fate
>>3211737
Cause fuck you.
>>3211738
What would you know about it? It keeps getting deeper the more you answer it, and I think I might just be the guy to unlock and find the bottom and the meaning of life.

>> No.3069382 [View]
File: 161 KB, 500x500, 1300047373175.gif [View same] [iqdb] [saucenao] [google]
3069382

>>3069288
I think what you're struggling with is the 'flight of fancy fallacy'

It regards that as soon as the number of fancy rational expectations outpaces the number of voices in a discussion, the discussion tends towards a flight of fancy.

>indistinguishable from magic

If this were a Sci-fi novel, I would determine that you, rather than adhering to a understood framework, even if magical, you are now relying magic to drive your plot, not rational or logical outcomes.

>> No.2656189 [View]
File: 161 KB, 500x500, 1298999650392.gif [View same] [iqdb] [saucenao] [google]
2656189

I heard copying stuff down in class makes you use both of your brain's hemispheres. Is that true? And does that help you remember because of that?

>> No.2536891 [View]
File: 161 KB, 500x500, 1278571310556.gif [View same] [iqdb] [saucenao] [google]
2536891

How much heat is needed to heat 1kg of mercury metal from 10 C to its boiling point and vaporize it completely?

The specific heat of mercury is 140 J/kg • C. Its heat of vaporization is 3.06 x 10^5 J/kg. The boiling point of mercury is 357 C.

>> No.2191992 [View]
File: 161 KB, 500x500, 1278571310556.gif [View same] [iqdb] [saucenao] [google]
2191992

Hello fellow /sci/,
could you explain me how
(k+1)!-1+(k+1)(k+1)! becomes (k+2)!-1 ?

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