Archived threads in /sci/ - Science & Math - 392. page
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Anybody else find that most professors are actually really mediocre people?
1) how so?
2) what else would they be?
In my riding group there's one university professor. I was going to disagree and say that a biker professor is not mediocre at all but then I realised that he rides a Yamaha XJ600 which is one of the more boring bikes out there
So yeah, can't disagree
>>7809232
Duh. The true geniuses of the world are the Li Wangs of the world who are hiding deep within bum fuck nowhere, doing nothing with their lives. I have never met anybody smarter than me, and will most likely never meet anybody smarter than me. Despite my abundance of intelligence, I remain a nobody. Why? Because I am intelligent enough to not give a single fuck about my image. I am intelligent enough to know that putting myself through pain for years on end just to build an image in other brains, brains that will one...
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Hi ,
Can somebody tell me if line 10 is correct ? Did I do a mistake?
∀x(A ∨ B) ⊢ ∀x A∨B , Note: x is not free in B .
1.∀x(A∨B) premise
2.¬(∀A∨B) assumption
3.x0
4.(A∨B) [x/x0] (∀xe),1
5.A[x/x0] ∨ B x is not free in B
6.B Assumption
7.∀x A ∨ B (Vi),6
8.⊥ (¬e) 2,7
9.A[x/x0] (⊥e),8
10.∀xA (∀x)i,3-9
11.∀A∨B (vi),10
12.⊥ (¬e) 2 , 11
13.¬¬(∀A∨B) (¬i),2-12
14.∀A∨B (¬¬e) ,13
>>7809225
What book are you using? I've only worked with propositional logic in Fitch style deduction systems, not predicate logic.
What the fuck is that shit, can't you write trees ? That proof should be trivial and I have no idea what's going on.
Line 9 is wrong, you just proved not(B), you cannot use bottom-elim to conclude whatever
Hey /sci/ I'll cut right to the chase. I was interested in teaching myself mathematics as a hobby, and am starting with single variable Calculus. MIT OCW offers text+videos to teach this, along with problem sets and a final "exam".
I was just asking if /sci/ deems this a reliable resource? I assumed so since it's MIT but would like a confirmation.
as good as any other resource of this type you could find
...
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>the speed of light has a speed limit because the so called zero point energy that results in the "vacuum catastrophe" in QFT is actually the MEDIUM which controls the speed of light
>Nullify the zero point energy field and you have FTL
Your welcome /sci/.
Don't forgot to quote me when one of you win the Nobel Prize a few decades from now.
Yeah sure. I'll just greentext you in my acceptance speech.
Thanks for doing my homework, nerd. Edison out.
Speed of light is only so because it also happens to be the speed of causality. Moron. Actually speed of light is infinite but it can't go faster than causality so boom speed limit.
>>7809316
>first they ignore you
>then they laugh at you
>then they fight you
>and then you win
case 1)
f = f(x,y,z) where we know that x,y,z are INDEPENDENT of each other
- the total derivative:
[math]\frac {df} {dx} = \frac {\partial f} {\partial x} \frac {dx} {dx} + \frac {\partial f} {\partial y} \frac {dy} {dx} + \frac {\partial f} {\partial z} \frac {dz} {dx}[/math]
[math]\frac {df} {dx} = \frac {\partial f} {\partial x} (1) + \frac {\partial f} {\partial y} (0) + \frac {\partial f} {\partial z} (0)[/math]
[math]\frac {df} {dx} = \frac {\partial f} {\partial x}[/math]
- the partial:
[math]\frac {\partial f} {\partial x} = \frac {\partial...
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>mfw sci doesnt reply to anything that doesnt have
.9999999 = 1???
earth is flat faggots
meme musk rockets
le fucking ai doom bots
>>7809153
What the fuck are you doing? The total derivative is as you wrote it. The partial derivative does derivation assuming the other variables constant.
That is \frac{\partial f}{\partial x} = \frac{\partial f}{\partial x} on both occasions.
>>7809337
Apparently I must do something more for latex output to appear.
How would one implicitly solve this by separation of variables? I can't seem to figure out how to separate the x's/dx's and the y's/dy's.
You don't necessarily have to separate them. Try integrating this and find an expression for y, if possible.
>>7809072
(y+1)/(y-1) dy = (x+3)/(x-2) dx
>>7809072
Can someone just go and stop all internet-facing AI from rearranging history to write confusing text books such that archetypal reasoning problems get posted on this board? Thanks.
What is the best topic in maths and why is it Geometry?
>>7809024
>why is it Geometry?
b/c you can use it to describe all 4 forces in physics
>>7809024
Don't you mean Set Theory?
Sacred Geometry
>50-100 years in the future
>we interstellar flight now
>visit the planet best candidate for life
>land and greeted by ayy lmao
>intelligent and civilized
>they have their own wars but peaceful
>soon allowed to see their internet
>their artists are drawing rule 34 of us
Trying to describe the opposite thing, what would...
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>>7809008
>50-100 years
>interstellar flight
Good one, OP.
>>7809008
>what would happen if aliens visited us.
The thing is, if FTL travel(for you need FTL to travel to distant worlds) is possible, then why haven't they visited us already? Are there perhaps no aliens at all, and there is only life on Earth? Unlikely, I would say, for universe is far too big a place. Do you think, that if they exists, they haven't developed interstellar travel yet? Also, unlikely, because life could have developed far earlier that us. Or maybe, life usually destroys...
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>>7809426
>if FTL travel(for you need FTL to travel to distant worlds) is possible, then why haven't they visited us already?
Because the universe is an incomprehensibly big place, and we are but one tiny insignificant planet amongst trillions of trillions of trillions.
>tfw struggling through basic ochem
JUST
>>7808633
It's 99% memorization.
Work harder.
>>7808633
Don't fall behind. It's going to get worse. Get a tutor early. Your university should have a tutor program paid for by tuition.
>>7808633
Previous posters are right, Its mostly memorisation. Make more notes, do a as many questions as you can and don't be afraid of asking your tutors/teachers/lecturers or even friends for help. Good luck.
Help me create a polynomial function with this given information:
Zeros: -3, multiplicity 1; -2, multiplicity 2; degree 3
anyone please?
(x+3)(x+2)^2
>>7808454
This
How does science explain homosexuality?
Glitch in evolution.
>>7808123
Having extra males around for labor, hunting, and protection without having them compete for females is a huge evolutionary advantage for populations
The Greeks and Romans damned our race forever.
/sci/ how do you possibly expect to compete with Mac's flawless argument against evolution?
https://www.youtube.com/watch?v=16p_16BguFM
>>7807868
Anyone who has taken an intro course in biology could probably understand the foundational papers of evolutionary biology. So they are just retarded.
It is true that appeal to authority effects the direction of science all the time. Just like how the christian church was the authority that led people to believe the earth was flat, and how the modern scientific reverants like michio kaku and degrasse is bullshitting people about quantum magic.
its a shame for sure
>>7807897
Isn't quantum physics just our current best understanding of the universe?
Do you guys like Biology?
>>7807808
I do
I mainly only like evolution. Evolution's pretty cool
>>7807808
Most people on here claim Biology to be a low tier science.
Is regularly drinking coffee before going for a shit generally ill-advised?
pic related me before taking a shit
coffee helps things get moving.
though I heard that good coffee won't do that. but most coffee is cut with various other materials, that's what makes you shit.
>>7807795
Coffee makes me shit on command. I hear some people it does this, most people it doesn't have any effect. Nicotine does this for black people for some reason.
I don't plan out my shits, but I know to be near a bathroom if I drink coffee.
The common notion that an IQ exist is completely backwards. To understand where I'm coming from you need to understand that the IQ test was invented in the early 20th century to attempt to "classify intelligence". It was a man-made idea put into existence.
As I see it, intelligence can not be measured. Some humans simply do not try when it comes to knowledge. Anyone can be amazingly intelligence if they put their time to it. And IQ test only test patterns and the ability to do IQ tests.
Feel free to engage with me on this subject.
>inb4...
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>>7807748
>speed is a man made concept
>speed cannot be measured objectively
>some people are simply not trying in a competition
>you cannot determine who runs faster
>this fatass here could be faster than Usain Bolt, if he tried
>>7807756
/thread
>>7807756
Shitty argument. Speed is easy to measure. The smartest people in the world can't even agree on how intelligence should be defined. You're comparing counting cards with rocket science.
