Archived threads in /sci/ - Science & Math - 250. page

>>9074469
only if you're a brainlet

Nobody owns this book.

I actually have this book. I TA'd for a discrete mathematics class that used this book. The ducks thing is just the title, there aren't duck themed problems throughout the book.

Its pretty bad overall. It tries to be very intuitive and easy to understand, and minimizes the usage of equations. But its not very well done, and the students were just more confused by trying to follow all of the convoluted "intuition" presented.

>>9074464
Stop drinking martinis.

What's the energy in a thermonuclear explosion? Or you could mean something movinf with so much energy that sets a fusion reaction in the atmosphere. Either way, you are a brainlet.

>>9074405
about 10^7m/s

>>9074752
I think he means the XKCD thing with the baseball thrown at the speed of light.

You'd gotta learn son fluid dynamics some

In the worst case, it's impossible. In the second worst case, [math]n[/math].

>>9074241
If An is a singlet, you're fucked.

>>9074241
Best case I can come up with is 2.
where all sets Ai are disconnected and are the union of partitions.

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x+sin(x)

Define it piecewise or use some step punction fuckery.

>>9074154
f(x)= x + (literally any periodic function that ranges from -1 to 1)

>>9074123
https://www.youtube.com/watch?v=CtaYDOm_DCg

If like math its better.

>>9075527
I feel like this guy's advice is correct but at the end of the day it is misguided.

He seems to assume that everyone will be mature enough to put in the work that comes with a STEM degree, but we see this is not the case. College administratos are always trying to take math from the general curriculum and why is this? Because the fucking retards never pass the class. Do you really think these people could go through a STEM degree?

Sure they could make the "right" decision and major in STEM but then what? They will fail the same algebra class 5 times in a row, collecting debt and then they will quit college and off themselves.

I think this is a case where understanding brainlet psychology is important. I think it is better for a brainlet to go get a brainlet degree and at least get the actual fucking degree which puts you already on top of many people in terms of your marketability, than to waste doing something you are too irresponsible and retarded to do and end up empty handed. This is not even an issue of intelligence because we see people with a varied degree of intelligence graduate from the same programs. This is just a case of irresponsibility.

I mean, go to your nearest art major and look at his trendy hipster look, his retarded glasses and the way her daddy issues reflect on her make-up style and ask yourself. Could this person pass a first semester of engineering? Probably fucking not.

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>>9075545
He argues that brainlets shouldnt go to liberal art or social science degrees since theres no employability outside of things subsidized by the state. In this video he assumes that your not a brainlet.

Tfw brainlet.

>>9084468
It will have lots of secondary benefits that will make learning easier.

>>9084468
it will make you live longer (cardio, that is)

>>9084468
Yes, also pretend the various mental faculties (visual, mathematical, memorizing, language and 'stomping' etc) are muscle groups. The ones you train you'll improve.

>>9074109
>To only reason humans do anything as opposed to nothing is because if we were to do nothing we would die, and natural selection has given all life a sense of self preservation

nah nice try though i guess

A neural network that avoids outputs that have a prediction of causing pain to itself, and a bias towards outputs that have predictions (working backwards from desired next world states, remapping its networks from the inputs of the last state, based on all previous knowledge). Simple.

>>9074374
have predictions of causing pleasure*

>>9074035
>z=(2+1)(x-3i)-2i
do you mean z=(2+i)(x-3i)-2i ?

>>9074035
Write x as a+bi. (a and b are real)
Expand the whole right hand side.
Collect together all terms that do not have i (real part)
Collect together all terms that do have i (imaginary part)

If you require z to be real, set the imaginary part of the R.H.S. equal to 0.

This will give you what constraints a and b should satisfy to make z real.

Stupid frogposter.

>>9074021
Depends
How long you want your polymer to be affects its properties and time to make it.
The temperature the reaction takes place at and even the pressure can be factors that have an effect on the rate.

Just go with thirty minutes. Who the fuck knows the right answer to your impossibly vague question

>>9074032
I was researching polymerization for high density polyethylene.

Basically I want to know how much it would take to polymerizate a ton of ethylene.

>asks a quantitative question with a discrete answer

>provides no information about any variables

?

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Nice blog post, faggot. I'd upvote this, but unfortunately we're not in Reddit. Perhaps you should go back there?

Good news guys. I somehow stopped procrastinating against all odds and started going through SICP again at about 9 pm. I hadn't even touched it, or any other STEM stuff for over a month. I didn't find it hard at all. And to think I considered spending the rest of the day eating junk food and telling myself real life starts tomorrow

>>9073992
>works hard and has basic numerical literacy
this is the most important factor

both rigorous theory and example applications are needed to fully appreciate and competently apply any topic. If you do nothing but study books, you quickly realize that you know nothing when faced with an actual real world task, while if you do nothing but study applications, you will never identify underlying and unifying patterns.

that being said, having some direction goes a long way.

>>9074022
Thank you, that was answer was reassuring.

>>9073992
I'd have to say learn it in the context that it was created in.

Calculus was invented to do physics.
Learn calculus from doing the physics problems it solves.

>>9073988

Because biology is for brainlets. France realizes that all true sciences are based on mathematics so emphasizes that.

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>>9073990

>>9073988
France is pure trash. The only good school is ENS Ulm and it is only good in the physics and maths department (also, it is a jews-only school).

France is a filth-ridden, traitor country. Don't go there.

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it depends on what base he's thinking in

[math]\mathbb{BIG}[/math]

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>>9073873

the composition of the picture betrays a familiar chadditude.