/sci/ - Science & Math

[math](\frac{A}{B})[/math]

>>9516168
what the fuck

[math](x+y)^2=x^2+y^2[/math]

M_2,2 = [12, 5; 7, 2]

>>9516510
-> 2xy=0
x or y = 0

[math]\frac{d}{dy}(e^{x}sin\theta)=e^{x}cos\theta[/math]

>>9516531
mod 2

>>9516168
MODS

>>9516626
>3,141 is still written left-to-right

>>9516168
GO AWAY

>>9516729
You may not like it, but this is what peak physics-ing looks like

>>9516160
R^2 = 0.08

>>9516951
Is that for SATs? Why does writing go up to 5.1?

>>9517049
the graph has a title.

>>9516464
What's wrong with that? It's equal to [math] 2\pi d\theta[/math]

>>9517069
WhAT's WRONG WiTH IT????????


oh, it just has horrible kerning

[math]\displaystyle \lim_{(x,y)\to(0,0)} \frac {x^2}
{x^2+y^2} = \frac {0} {0+0} = 0 [/math]

>>9517168
: (

>>9517193
[math]\displaystyle \lim_{(x,y)\to(0,0)} \frac {x^2} {x^2+y^2} = \frac {0} {2*0} = \frac {1} {2}[/math]

>>9517168
You stop that

>>9517168
>yfw all derivatives are 0/0

\[ \lim_{x,y \to 0,0} x^2/(x^2+y^2) = 0^2/ 2*(0+0) = 1/2 \]

Woah i failed

>>9517058
Ah, I forgot what GRE was. I thought it was some statistics thing.

>>9516626
hahaha what in the hell

>>9517916

>>9517916
That’s not even gore; it’s more like mashed hamburger.

>>9517168
Can't unsee

>>9516168
Oh I get it

>>9518025
Stresses me out

>>9517168
i dont get it, can someone explain?

>>9519274
first, it shows you have no idea how to evaluate limits from all directions
second, i equated the limit wrong (actually meant to do 0+0/0 = 1) and instead set it to 0

>>9516160

electromagnetism

[eqn]\int \mathrm dx\, f\left(x\right)[/eqn]

>>9520498
Why do physicists do this?

>>9519153
I just starting out. But is this retarded because he could have just use an or? Closed question. Why is it bad?

[eqn]\frac{1}{2\pi i}\oint f(z)\mathrm{d}z=\sum \mathrm{Res}_{z_0}(f)[/eqn]

>>9520657
Personally think it looks better and makes it seem like an operator instead of some kind of bracketing thing

>>9520498
anything other than [math]\int_\Omega f(x) [/math] is retarded, if its over an interval of x it should be [eqn]\int_{x\in \lbrack a,b\rbrack} f(x) [/eqn]. indefinite integrals should never be used.

>>9520674
>Why is it bad?
uses more memory, is slower, more difficult to maintain, takes longer to figure out what it does, easier to make a mistake somewhere, only works for specific number of values, have to change 4 things to change the number of values used. should have stored the a's in a list and just aggregate them with an or. Thats C# so it could have been

bool IsAtLeastOneTrue(params bool[] bools) => bools.Any(x => x);

>>9520797
Until you are integrating w.r.t something other than the standard measure on R^n...

>>9520821
meme integrals are so far removed from integration it should not even use the same symbol..

>>9517347
Well that's actually good looking

>>9520797
Why is it that every time an undergrad learns something they act like anyone else who doesn't know that thing is a retard?

>>9520859
It's turning algebra into the coordinate hell that is differential geometry

>>9520860
what are you talking about?

>>9520797
>indefinite integrals should never be used
Fucking retarded. What if you have boundary conditions handy? Doing a definite integral would be unnecessary.

>>9520923
then just leave the one boundary as a variable, you get the exact same result but its more better.

>>9520925

>>9520978

>>9520657
because when we are manipulating the terms inside the integral, over the course of many lines, it is easier to just write all the "useless" stuff right away and then you manipulate the rest.

also, in many cases (in qft), we have to put all terms together under all integrals, so separating terms with dx's isn't as useful as they are in calculus (where you are generally solving and evaluating the integrals).

>>9520978
Honestly triggered by this

>>9520842
The only think that changes between the definition of an integral on R^n and an integral on a general measure space is the definition of the measure. The definition of the integral is the same.

>>9520978
posting tv shit isnt fair

>>9520978
I'm honestly unsure what the fuck I'm looking at
from a cursory glance (as a non-chemist)
>I - Oxygen
>H bonded to three atoms in the upper left, two in the bottom left
>colored blocks all around
>no double or triple bonds
>Iodine-Fluoride-Iodine bonds?

>>9521246
>>9520978
Its some toxic chemical the villain uses or something, they get the skeleton structure but cant figure it out without knowing that the atoms are so they use those baby letter blocks to make the molecule and figure it out.

>>9521243
I literally shivered from disgust

>>9520978
At least assign them CPK colors so looking at it isn't the *most* painful thing in the world. Good fucking god this is the winrar.

>>9521243
What brainlet show is this atrocity from, where the creators don't even know remedial chemistry?

>>9521243
>python 6
>implying people won't just stay on 2.7 for literally eternity

>>9520860
you just described this entire board

>>9516510
What kind of insult is this?

>>9516729

>>9518006
>mashed hamburger

>>9516168
Fucking hell. I wasn't prepared for this.

>>9520866
>alg*bra
brainlet pls

>>9516168
*pukes*

This is evil.

>>9522026
brutal
nobody here will get it though

>>9521796
>wtf did I just read
The most accurate and elegant theory ever created by mankind. Its just written with shit notation to make it look more complicated.

>>9522693
How the hell is this the most elegant? All the left handed dudes introduced by hand. Weinberg's rotation is all just to keep the photon massless. All these vevs.

You may not like it,but this is what peak chemistry looks like.

>>9516177
Why the hell is the square root symbol used anyway. Nearly every fractional exponent is represented as 1/n.

>>9521243
>tfw malware isn't encrypted
>tfw still running on 2.7

FUCK.

>>9516951
Philosophy majors killing it in writing god damn.

>>9517938
Get out.

>>9516689
That's how you write numbers in Arabic, even if you used Arabic numerals.

>>9517916

[eqn]{\rm I\!R}[/eqn]

>>9523685
>CH50H
>H20

>>9524444
Nice get Ahmed

>>9525004
>So4

>>9516464
[math]\displaystyle \mathrm{d}\theta \int^{2\pi}_0{\mathrm{d}\phi} =[/math]

What kind of imbecile doesn't use \mathrm{d} in 2018?

>>9527092
Hah. What kind of trogledite doesn't define a macro which creates an infinitesimal element of its argument??

>>9529543
What kind of nincompoop can't spell troglodyte?