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Archived threads in /sci/ - Science & Math - 1176. page

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Does /sci/ prefer whiteboards or blackboards?
I haven't met anyone who prefers whiteboards over here so it's a fucking mystery why they're so popular.
Is this just my country sucking or do whiteboards also plague where you live?
38 posts and 5 images submitted.
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Blackboards for lectures, but whiteboards are better for closed rooms because they make less of a mess.
>>
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>>8497091
>not writing on glass masterrace
writing on boards are for brainlets who couldn't evolve beyond the beauty of writing on elegant glass
>>
I started uni this year and I love whiteboards so much after 12 years of blackboards. everything is much, much cleaner and they're almost a joy to write on. why do people prefer blackboards?

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/sci/ memes, post em'.
13 posts and 2 images submitted.
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>>8496859

(Cheeseburger * Pi) / Beer mugs

You're welcome ;)
# TUNA LIFE
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>>8496919
If you want to solve it you get an disguising improper integral of
[math] \int_{15}^{\infty} \frac {5Si(x)}{2} [/math]
Which literally can't be evaluated.
>>
>>8496960
>not using complex numbers to compute it

baka desu senpai

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what are the best countries and universities in europe in the engineering field ?
17 posts and 4 images submitted.
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>>8496516
America and DeVry
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>>8496533
are you retarded ?
>>
>>8496602
That post is obviously bait

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Have i found a new way to generate a square wave?

https://www.desmos.com/calculator/qodirgafgw
25 posts and 3 images submitted.
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>>8495637
Maybe, congratulations. It's useless, but I bet it was all worth it.
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>>8495637
Not a new formula by a long shot, but it's always good to discover something yourself

>>8495691
is a retard
>>
>>8495693
no u

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>yfw you inherited the smart genes from your mom but your dad is a brainlet and he refuses to believe you when you tell him you only need to study for a day or two before the exam to get good grades and he insists you have to spend two hours a day every day reviewing your notes and lecture slides

why is my dad such a brainlet? they should all be gassed desu...
19 posts and 7 images submitted.
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>>8495516
>woman
>smart
>>
>>8495516
>implying he is a brainlet
He has better memory skills than you OP
>>
>>8495516
I never studied for an exam before college. In college I would study the day before the exam.
You're a brainlet for even considering needing two days to study and your dad is a brainlet's brainlet.

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You should be able to solve this,
36 posts and 3 images submitted.
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Left to right, top to bottom:
7/2, 9/2, 19/2, 7/2
>>
>>8494456
4 equations, 4 unknowns. Assuming there is a solution to this system of equations then yes it is a simple exercise in basic math to solve.
>>
>>8494465
This is correct

>>8494468
This is the method

Hope you understand your homework now OP

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Do you think it is lamentable that scientific studies about racial differences are effectively banned?
164 posts and 16 images submitted.
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>>8494131
>>>/pol/
>>
>>8494133
Do not reply to my threads please, you are embarrassing yourself.
>>
>>8494142
>>>/pol/

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Wtf I hate psychology now!
44 posts and 6 images submitted.
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>>8494123
why?
>>
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>>8494123
kek, that was one of the goat experimnts
>>
>>8494123
Ohh a movie based on true events. I'm sure it shows me the event in an historic accurate manner and doesn't completely warp it to make it more exiting.

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What's the most surprising math result?
116 posts and 9 images submitted.
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420 = weed lmao
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>>8493091
some infinities are bigger than other infinities
okay hazel grace?
>>
>>8493091
That categories are a lot more useful than just as organizational formalism.

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Is evolution a farce?
120 posts and 20 images submitted.
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>>8492344
http://endtimeupgrade.org/has-earth-already-had-endtime-mankinds-lost-heritage-age-of-earth/
>>
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Yes
>>
It's one of those things that you believe unquestionably if you don't do any reading about it all, begin to heavily doubt after doing some light to mid reading, and then go back to unquestionably believing after you do heavy reading.

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Smart people, I have heard, lurk here. Seems reasonable to assume some of them must partake.

Whenever I do, no mater what strain, always traumatic paranoid delusions, even in extremely small quantities.

Anyone similar experience has found the right type, assuming one exists.

I have heard can be very good anti stress. My work is high stress, would like to unplug and relax with a natural assist.

Thank-you smart awesome people.
34 posts and 6 images submitted.
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Just drink alcohol.
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>>8491158
Do you take any medications?
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>>8491167
not on any meds of any kind

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Consider three circles of radius 1 placed at the corners of an equilateral triangle with side length 6 and shoot a ray from the centroid of the triangle. Given the ray reflects in usual way how can I determine an initial direction that traps the ray?

After this I would hope to generalize it to a ray shot from a general position and more general convex bodies.
13 posts and 3 images submitted.
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I don't know.
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>>8491081
There exists multiple trapped rays.
Have it approach the line of shortest distance in the limit.
>>
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>>8490627
I don't think it would be possible to actuall define a function which takes the degree of the laser and says you where the beam would end up. This construct would have a very chaotic behaviour so I guess you illustrate the soultions you would end up with some kind of fractal. The only possible way I see is to calculate the path for every single degree with simple geometry.

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Why are most people attracted to the opposite sex instead of same or both sexes?

Pic not related.
62 posts and 10 images submitted.
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>>8495101
Because thats just how god made us
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>>8495101
Because the one's who aren't attracted to opposite sex won't produce offspring with those shitty genes. Also, most people are attracted to both sexes to some extent. They just won't admit it.
>>
>>8495101
u got face?

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What is this satan's spawn of a book? Am I just too stupid for physics or is this book just really hard for a second year?
10 posts and 3 images submitted.
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>>8498605
It's you, not the book.
>>
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>>8498605
did it first year mathematics.
just do the excercises and you will start getting the hang of it
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>>8498624
this

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I've had this idea for a while now. Let t be time you've lived so far, and Happiness(t) be a function of how happy you are at any given moment t. Then how good you've lived your life will be measured as an integral of the happiness function. If this evaluated over your lifetime is greater than 0, then your life was worth it, less than 0, not so much. Thoughts on my philosophy?
21 posts and 5 images submitted.
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>>8498519
>anon unironically mentions happiness
>mfw
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>>8498522 cont'd
this thread needs more schopenhauer memes
good gracious, I have plenty

okay, well, first of all you don't define happiness, so this thread might as well go to trash, but for some unknown reason I would like to have you explain yourself
so... go on
>>
>>8498519
But you've just shifted the problem, now instead of agonising over how to decide if you've lived a good life, you'll agonise over how to define the happiness function.

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