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Hey /sci/
I'm on a college break until march 20th and i'm going to have some calc 1 classes but i hear they don't have integrals until the late semester, its mostly limits/derivates
The problem is my math stopped at bhaskara. I don't know shit after bhaskara.
Can you guys recommend me some pre calc books? Or things that are going to help me at the meter? I don't learn very well from khan academy, i find books easier desu
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bump
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>>8713885
Basic Mathematics by Serge Lang, it's recommended everywhere on /sci/. How can one even browse /sci/ without knowing about this recommendation?
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The fuck is bhaskara, nigga?
Could we use living human brains to power other things?
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why the fuck would you do that?
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>>8713878
You could burn them in a steam engine or feed them to oxen
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>>8713923
reduce unemployment
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Hello /sci/borgs,
What would you consider to be the opposite of a selfie, or an anti-selfie? My thinking is along the lines of:
>a selfie is a picture of yourself taken by yourself
>the opposite would therefore be
>not a picture
>of not yourself
>not taken by yourself
What would fit these criteria? I was thinking that your ordinary meme might the solution but it seems a bit too silly to be fully correct. Please discuss.
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>>8713543
An anti-thing is not an opposite of a thing in all respects. If this were true, an antiproton would be:
>not a particle
>negatively charged
>with no mass
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>>8713547
You are correct. I'm a math person so I was thinking ~(selfie) = negation of each defining characteristic of selfie. What do you think an anti-selfie would entail then?
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>>8713543
>not a picture
>of not yourself
>not taken by yourself
You're describing an inverse-selfie, not an anti-selfie. And you can, in fact, go deeper.
Here are all the properties of a selfie:
-a photograph
-of a person (the person who took the photograph)
Therefore an inverse selfie has to be:
-not a photograph
-perhaps not even an image
-cannot depict a person, certainly not the person who creates the inverse-selfie
The best candidate for an inverse selfie that I can think of is the imprint of a plant in vinyl, which is then played on a record player. Record the waveform of the noise. There's your inverse selfie.
Anonymous
What does /sci/ think of ... 2017-03-01 04:33:26 Post No.8713497
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What does /sci/ think of ... 2017-03-01 04:33:26 Post No.8713497
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What does /sci/ think of ...
Anonymous
2017-03-01 04:33:26
Post No. 8713497
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What does /sci/ think of Mechatronics. I have heard a few English and Lebanese universities have this major called Mechatronics. Fairly self explanatory: combination of Mechanics and Electronics.
My first thought is you wont be able to go deep enough in both subjects in 4-5 years...
I'm already in Mech. Eng. so I'm not asking for the reason of changing majors. Also Leaf fag here so we don't even have this choice.
Just wondering if anyone has done it and wanted to know what it was like.
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>>8713497
>Also Leaf fag here so we don't even have this choice.
look harder?
https://uwaterloo.ca/mechanical-mechatronics-engineering/
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>>8713748
oh let me be more precise... montreal leaf fag
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It covers the biggest part of the industrial world. So when you get it, and you like it, you will find a job to your satisfaction
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>tfw I have spent my devoted my past four years of school to college admissions
>I got 24 A's plus AP + College credit
>officer in three clubs
>horrible body but barely make varsity track
>get into Stanford and Princeton
>finally realize this was all a joke
>mfw there are students at worse colleges gettting the same education as me
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>>8713372
>mfw there are students at worse colleges gettting the same education as me
HOL UP
IT GETS EVEN BETTER
>pour hear and soul in uni
>for 5 years
>people that did worse and cheated will land better job
>because
>nepotism
>connections
>luck
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>>8713375
>heart*
Thanks acer
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>mfw I'm getting a good job through nepotism
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please recommend an actual good book for mechanics
as good as spivak's calculus or serge lang's basic math but for mechanics
also alot of mechanics books dont have the coefficient of restitution for some reason so i have set that as a requirement for a good book
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Feynman lectures.
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>as good aa spivack's calculus or serge langs's basic math
You got memed
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>>8713217
> Best beginner's mechanics book
Hartog
> as good as spivak's calculus or serge lang's basic math but for mechanics
you could read Spivak's Mechanics :^)
> also alot of mechanics books dont have the coefficient of restitution for some reason so i have set that as a requirement for a good book
lol why?
Only text I've seen that uses that is a contact mechanics book.
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How did it happen, /sci/? How did you get redpilled to pure sciences?
>enter top-tier college in Brazil
>slightly good with number, so decided to go for aerospace engineering
>take calculus classes
>astonished by the beauty of it
>everything else was lame
>grades go down because I can't do anything but math
>not really into engineering but I don't want to die poor so I keep going
>brother just graduated in materials engineering in the best college of the southern hemisphere (for his area)
>"so... what are you going to do now? Where are you planning to work?"
>"I'm not going anywhere, I won't find a job in this fucking country. I won't even try"
>half of his friends couldn't get a decent job that pays them enough so they can pay their rent
>realize that engineering degree is a meme
>take real analysis class to see if this is what I really want
>loved it
>currently studying pure mathematics in college
What about you?
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the continuous functor concept is at best vaguely related to continuous functions
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>>8713138
i think i saw this story in 55chan
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>>8713138
CAASO?
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Finish any book in ~1 week (cross-referencing, exercises and rearranging take longer).
Access every page I've ever read in my mind's eye.
Get from my spirit guide more information than I'll ever be capable of elaborating.
Drug myself to sleep because I can't handle it.
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>>8712793
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>>8712793
Hahaha
>Go to /x/
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My heart is going to explode.
Took some L-theanine to calm down.
Going to take a jog and ponder about whether meditating or doing mathematics today.
The galaxy is on Orion's belt.
Adieù sub 200 IQ cattle.
Hey /sci/, i've got a guy in my college classes asking the usual question "what would this ever be used for" for large numbers in the form of smaller exponential numbers. So for reference, the Saturn V rocket came up (somehow).
Math Time.
The fuel carried (more listed as we go) was 203,400 gallons of Kerosene weighing in at (rough numbers due to varying temperature scales) 6.82 pounds per gallon.
203,400 x 6.82 = 1,387,188
Liquid Oxygen; First stage 318,000, second stage 80,000, third stage 19,360
318,000 + 80,000 + 19,360 = 417,360 weighing in at 9.527 pounds per gallon.
417,360 x 9.527 = 3,976,188.72.
Liquid Hydrogen (no first stage) second stage 260,000 gallons, third stage 66,700 gallons. 260,000 + 66,700 = 326,700 gallons weighing in at .567 pounds per gallon.
326,700 x .567 = 185,238.9
so adding all fuel weights: 185,238.9 + 3,976,188.72 + 1,387,188 = 5,548,615.62.
The total weight when fully fueled is said to be 6,500,000 pounds, and designed to carry the + 90,000 in cargo.
6,590,000 - 5,548,615.62 = 1,041,384.38
i've lost myself and have no idea what im doing with this anymore, give me a moment to collect my thoughts
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ok so the point would be explaining that big numbers like 5,548,615.62 could be rounded up to let's say 5,550,000 ok? but to simplify that it could be written as 555 x 10^3 if i'm not mistaken.... maybe to the exponent of 4, my brain is shitting itself right now. it's easier to write it with that exponent than the whole number.
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lol what are you doing
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>>8712358
at this point dude i dont even know. i've lost myself
This guy thinks our true selves, which are connected to our physical bodies (avatars) by virtue of the mental, exist in a completely different reality. He believes there isn't any problem of mind/body but rather that it can be explained through a theory virtual reality. Is he onto something?
http://wiki.my-big-toe.com/Main_Page
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is dad science the best type of science?
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>>8712334
imagine if it turns out to be true and everyone is stuck with that shitty name
>big toe theory
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>>8712343
The theory is already in the toe, though. It's pretty neat actually, I hate when I stub my TOE.
i was wondering if anyone here could debunk this theory that i've had for a while.
so i've always thought that when a star implodes on itself and creates a black hole that is the start to new universe. so basically all black holes in our universe lead into another universe and if you went through one you'd exist in a new universe.
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>>8712265
I have had the idea our universe is a black hole in another universe and is expanding because our black hole universe is consuming mass and converting it into space in another universe
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>>8712386
there is no equivalence between mass and space such that it could be converted.
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Yea dude i can debunk this
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I'm looking at the moon with my telescope and I'm noticing a faint glow far away from the part that the sunset hitting
It looked like the soft glow was coming from the east side of the Sea of Rain
Anyone else see it?
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100%
Got my boy, Elon on the phone right now. Can't wait for first alien contact in a few hours
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>>8712269
It does sort of look like a city at night illuminated from far away, except it's much dimmer and wide spread
I would say 50 to 100 miles in diameter when compared to the crater Plato
I'm not outside anymore, not sure if it's still glowing
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https://en.wikipedia.org/wiki/Planetshine
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Are there any actual advantages to using an e-reader compared to a physical book? I've read that there are "studies" that show using physical books is actually better and makes you remember the order of things in a book, but it could be bullshit.
Which would you recommend? Or is it all subjective?
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>>8711919
there's only 1 (ONE) ebook reader of adequate size, and it cost like 1500$.
And still flipping through pages would take you forever. Also there's no color.
So for now books are better, unless weight is super-critical for you.
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>>8711919
e-reader can hold lots of books in a portable format.
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>>8711925
This, plus potential to make books with less potential to sell copies available less expensively.
But I hate reading from the damn things.
Anonymous
Mind Lamp: Mind over Matter 2017-02-28 10:58:44 Post No.8711669
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Mind Lamp: Mind over Matter 2017-02-28 10:58:44 Post No.8711669
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Mind Lamp: Mind over Matter
Anonymous
2017-02-28 10:58:44
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do you guys think this works?
http://www.mind-lamp.com/inside-mind-lamp.php
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No.
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>>8711669
There is old research that says the mind can slight bias random number generators.
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>>8712526
But why would the CIA, NASA and Princeton care about this? Is there some truth to it? I mean, our minds already interact with physical reality so how far fetched is it really that we might be able to influence states of machines with just our thoughts? Nobody has yet demonstrated that consciousness does not extend beyond one's body and what its limits are.
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Prove any triangle inscribed in a circle is larger than at least one of the three resulting segments.
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>>8711526
Bump
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>>8711526
what does "larger" mean? how do you compare a triangle and a line?
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>>8712040
Pretty sure OP means one of the three portions of the circle not a part of the triangle's area.
[eqn]
A > \alpha \\
\alpha = \frac{\pi r^2 - A}{3} \\
A = f(r) = \frac{1}{2}*base*height = \frac{1}{2}[(o+r)(2a)] \\
A = r^2(1+sin \theta)(cos \theta) = r^2(1+\frac{1}{2})(\frac{\sqrt{3}}{2}) = \frac{r^2 \sqrt{27}}{4} \\
\frac{r^2\sqrt{27}}{4} > \frac{\pi r^{2} - \frac{r^2 \sqrt{27}}{4}}{3} \\
3\sqrt{27} > 4\pi - \sqrt{27} \\
~15.6 > ~7.4
[/eqn]
Equilateral triangle case. I'm lazy, sue me.