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Archived threads in /sci/ - Science & Math - 24. page
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Well?
>>
>>7834478
>C=1+C/2
>C-C/2 = C*(1-1/2)=C/2=1
>C = 2
>>
>>7834478

C = 1 + C/2

2C = 2 + C

C = 2
>>
>>7834478
\$1.50

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Are there multiple universes?
>>
That girl's not attractive.
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>>7834329
there is the world where she is.
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>>7834334

Someone living in a different universe would not be that girl.

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>2016
>esophagus and airway aren't fully separated yet
>it is still possible for humans to choke on food
Why did evolution fuck up so badly?
>>
>>7833849
Someone could kill you by holding your nose
>>
>>7833944
And breathing through your mouth is essential for any kind of physical effort.

Running to hunt your prey or escaping from a predator is millions times more beneficial than not choking on food even if you're a retard who can't eat properly.
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>>7833963
Yes because you cluld totally outrun
>a bear
>a lion
>a wolf
>a shark
>a gator
>a python

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The old one is over the bump limit

Mine: What's the easiest way to learn the LaTeX markup subset used on /sci/?
>>
Is this book a good starting point for someone studying proofs for the first time?
Can you guys recommend some other intro to proofs books?
>>
>>7833056
This is my favorite intro to proof book.

It's very short, very well-written, and covers some useful (and interesting, in my opinion) things as well rather than the contrived examples many how-to-prove-it books are filled with.
It's also cheap, which is nice.

Keep in mind that there's very little to actually _learn_ about doing proofs. Only a few pages.
The important part is to do a fuckton of them to get experience with writing and reading proof.
>>
How can I calculate the volume traced by a circle in R^3 that rotates x radians while translating a distance d along a line? (center of circle stays on the line)
At the start the circle is oriented along the xy plane and it's translated along a line in the xy plane while rotating "forwards". For example if r=1, x=2pi and d=0 it's obviously a unit sphere.
How to plot the resulting shape?

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Do grills that are good at math or physics physically attract you?
>>
It's usually the tits.
>>
>>7830550

As if that snorlax looking female would attract me.
>>
>>7830550
If they were good at physics they would figure out ways to physically attract whatever they want.

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How many watermelons are here?
>>
0, that's just a photograph of watermelons, not actual watermelons.
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>>7827653
There are four 3/4 of watermelons and four 1/2 watermelons.
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>>7827653
5

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You don't pick your parents, you don't pick your genes, you don't pick the environment in which those genes were expressed, you don't assemble the micro and macro structures of your brain which decide every conscious and unconscious action you will make in your 2.5 billion seconds of life, you don't choose the thoughts in which you think.

What makes you think you have any free will whatsoever.

>inb4 "hur dur I have the free will to raise my right hand"
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>>7825360
I want to call you a faggot now and so I will.

Faggot.

Check mate.
>>
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>>7825376
>>
>>7825360
it's not like we are trapped in our bodies, we are our bodies, so the result of our thought processes is our free will. It's not free from the laws of nature, but then nothing is, so it's pointless to expect somethign else.

You expect some kind of divine/transcendent qualities for free will, but that isn't a necessity at all.

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the way of the future
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>>7824430
Does anyone have the paper? Still can't believe the cat sees us as big cats
>>
>>7824438
It is from 1999, I coud not find a digital version.
But it is a legit Berkley experiment.
>>
>>7824440
Did they comment on that big cats thing? Is it an accepted fact that I wasn't aware of?

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My group is having a lot of trouble coming up with a senior project idea for Mechanical Engineering. Looking for some suggestions. Any help is greatly appreciated.
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>>7818197

A mechanical female sex toy that thrusts through the cervix
>>
Make an adjustable dildo that can change length and girth
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>>7818197
>group
>GROUP

Seriously? Is this level of hand holding actually real for engineering courses?

Both my math graduation projects are individual. I guess only some majors can be trusted as adults with responsibility, work ethic and intelligence.

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What went wrong in science that this doesnt exist yet?
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>>7817738
Physics turned out to be a real thing.
>>
[psychosis intensifies]
>>
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>>7817741
>Physics turned out to be a real thing.
implying electromagnetic fields dont exist
implying generating a stasis field doesnt create a reverse vacuum over solid ground.

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https://nrich.maths.org/1130

Quick question. My 8 year old daughter just got this homework. I would appreciate it, if an adult can solve it and tell me how long it took. I don't want your answer just how long.
>>
>>7817607
I'm a maths major, so don't take this as how long it should take your daughter or you, obviously. It took me about 5 minutes laying in bed, doing it in my had. I checked afterward to make sure my answers were correct as well. With a code, I could do this in a minute flat. It's definitely easier to do as a brute force problem, because any other way requires a level a critical thinking that is outside of most people's comfort zones.

It's a good problem in my opinion, and it encourages...
>>
>>7817607
7 minutes. this is a nice problem.
>>
Thanks guys.

>someone turned in a handwritten copy instead of using LaTeX
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>>7816816
fuck off im not going to a copyshop to print out 3 pages
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>>7816816
It takes forever to put shit in LaTeX though. I'd go through the effort for something more professional like a dissertation but for a homework? Fuck that.

Sounds like you're a shitty professor.
>>
>>7816816
You're probably a high school teacher if anything, so I highly doubt any high school kid would bother using latex

why do amerifats call maths or mathematics math?
>>
>>7816534
It is a singular subject. Do you call biology "biologies"?
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>>7816556
I never took mathematic.
>>
>>7816556
do you call sports sport?

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A train originally has no passengers on it.

The train stops at villages $v_1, v_2, v_3, \ldots$ respectively.

At each village, 2 people board the train and 1 person gets off.

After visiting all the villages $v_i$, the train gets to village $v_\omega$. How many people are on the train at that point?

______________
Side-note: If you don't believe the train ever gets to village $v_\omega$, think of village $v_i$ as being at location $\frac{2^n-1}{2^n}$ on the real number line,...
>>
There are two types on infinity - countable and uncountable. Your thought experiment relates to the countable type.

Watch from the 2 minute mark; or watch it all, its an interesting video.
>>
>>7815579
>>
>>7815585

The answer is that you don't understand infinity well enough to ask a coherent question.

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ITT: Preferred calculators, notebooks, pens/pencils, or other academic equipment.

Can someone recommend a nice pen? Been using the Pilot G-2's for a long time, ready for a change/upgrade.
>>
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>>7815444
>t-trips for truth!
>>
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>>7815378

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