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/sci/ Science & Math

Threads added between 2013/07/03 and 2013/07/10

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Most viewed threads in this category

26 more posts in this thread. [Missing image file: 31ESrmEz0-L._SL500_AA300_.jpg]
How does /sci/ like Spivak's calculus 4th edition?
6 more posts in this thread. [Missing image file: 530429_401171529911210_5466811_n.jpg]
>1^0=0 >multiply both sides by 2 >(2*1)^0=2*1 >2^0=2 >1=2
3 more posts in this thread. [Missing image file: kek.png]
>Abiogenesis i srsl hope u guise dont believe dis
4 more posts in this thread. [Missing image file: hensley.jpg]
Science Tuesdays Faggots! Don't Fuck with the Hens!
5 more posts in this thread. [Missing image file: RobertEdwinHouse.jpg]
"A university bookstore can get the book Courtship rituals of the American College Student at a cost of $4 a copy from the publisher. The bookstore manager estimates that she can sell 180 copies at a price of $10 and that each 50-cent reduction in the price will increase the sale by 30 copies. What should be the price of the book to maximize the bookstore's total profit?" This is a max/min problem from a book I'm using to self-study calculus, and I don't know how to model the equation. I'm guessing the quantity I want to maximize is Q=xy - 4x where x is the price and y is the amount of copies. I don't know how to make this an equation in one variable though. The answer the back of the book gives is $8.50. I want to know a solution though. Pic unrelated.
10 more posts in this thread. [Missing image file: Normal force.gif]
Does the magnitude of normal force change with respect to angle? That is to say, if I want to find the components of the normal vector, would I apply trig functions a second time and get mg<cos(t)cos(t), sin(t)cos(t)>? Or is the magnitude a constant mg?

His Hand Doesn't Even Move

0 more posts in this thread. [Missing image file: mqdefault.jpg]
https://www.youtube.com/watch?v=l789l6np-qA

Holy Shit, College

40 more posts in this thread. [Missing image file: o_the_nutty_professor.jpg]
I'm a dropout with a GED. All of my friends are going off to college at the end of this summer. All of my plans of teaching myself and getting an entry-level job have failed. All I do is spend time on 4chan. I think I'm going to enroll in my community college. It'll be a pain in the ass, because almost everyone there will be retarded, but I think I'll still be able to learn. Arts majors are shit, and so are art classes in general, but I'm wondering what areas of science you guys think are lucrative. Computer programming looks the most useful and personally relevant for me, but I've heard that compsci classes are all babby shit. Is that true? IDK, I'm just kinda scared about going back. I never had difficulty with the topics in school, the presentation was just boring and frustrating. I don't know what I'll do to prevent myself from going insane or falling asleep during bad lectures. I don't know if I'll be able to find any friends who think about things on the same level that I do. Anyone else heading for freshmen year, or have experiences to share?

Plasma has crystal structure in zero gravity

3 more posts in this thread. [Missing image file: gdsgsd.png]
https://www.youtube.com/watch?v=kanYuBptuZ0

Geometric challenges or puzzles (can include math)

86 more posts in this thread. [Missing image file: 1329172472790.png]
Any geometry (or any other) challenges or puzzles that you want to share?
18 more posts in this thread. [Missing image file: Untitled-1.jpg]
Why doesn't the answer display as -{5\over 3}x^3+20x?
4 more posts in this thread. [Missing image file: 1372902727452.jpg]
Over at /lit/ we decided to make an IRC channel where we share knowledge from stuff we've read/seen. Everyone is free to share and read tidbits of quality information, have decent discussions with each other and chat about anything they're learning or have learned. Anyone from /sci/ who would like to join is entirely welcome. There's not many people on right now, as most went to bed earlier. It's #knowledge on irc.rizon.net
8 more posts in this thread. [Missing image file: 1370843464956.jpg]
Why are we so lazy? Today when I woke up, I spent almost an hour laying in bed thinking about a girl. Is laziness something in itself, or is it the result of some "lack?"
1 more posts in this thread. [Missing image file: perfoct.gif]
What's a simple tool for drawing polygons by connecting points described by 3D point vectors? Pic related, I want to draw simple 3D models of pyramids made out of combined triangles and a base plane.

Physics textbook and video series recommendations

6 more posts in this thread. [Missing image file: Physics.jpg]
>tl;dr pls recommend the best physics textbook and video series I'm learning physics I'm in the last year of high school (18 btw, pls don't ban me) My textbook is awful It's full of mistakes It's explanations are awful They use poor notation (for example, not once do they use arrows over vector symbols, and they never seem to use subscripts, and sometimes their formulas appear to have errors in printing) I've been watching Khan Academy videos, and while they sometimes explain things very well, at other times he seems to fumble around and leave out formulas. I tried watching the first few MIT physics lectures. While I already understood the concepts they were teaching, I found his explanations needlessly convoluted and complicated. So, can anyone recommend the best physics video series and textbooks? I've checked the sticky, but there are just so many options that it's hard to decide
2 more posts in this thread. [Missing image file: 1-Danish_Military_Police.jpg]
I know this may not be the place for it, but does /sci/ have any experience in the military? Whether it be mandatory enlistment or voluntary, would you guys mind sharing your experiences?

pdf

0 more posts in this thread. [Missing image file: 9780273752011.jpg]
Hi, guys, maybe it's not related topic, but I need a little bit of help... If someone could find me link for pdf Book: E-Business & E-Commerce Management, 5th edition by: Dave Chaffey Need to do paper for my exam so I'm running low on time... Thx
5 more posts in this thread. [Missing image file: url.jpg]
How neon signs work? What can colors generate?
13 more posts in this thread. [Missing image file: themfeels.jpg]
I got a B in a general chemistryI class at my university even after the prof dropped the lowest exam grade(we had 3) along with homework grades. Should I just give up now as a chemistry major =(
5 more posts in this thread. [Missing image file: muh-singularity.jpg]
uh... you guys know the singularity has already started, right. we inside of that big hairy bitch right now. see the attached pic and let me know if any questions.






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