Archived threads in /sci/ - Science & Math - 589. page
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only math nerds will get this
ebin mene
mind if i save it
>>7683847
back to facebook
that temperature would never bake a cake, what the fuck kind of cake is that
Is the norm squared of any function an even function? Is any function squared an even function?
(any function = complex ones, too)
>>7678910
Norms are defined so that (norm af) = (modulus a)(norm f) where a is any scalar.
So norm -f is the same as norm f.
So (norm f)^2=(norm -f)^2, so norms squared are even functions.
The square of any function is not necessarily even, since (e^x)^2 is e^(2x) which is not even.
>>7678910
I'm pretty sure I don't want to know the answer to this, but is that book real? Why?
>>7678955
Its real as in it exists, it was made by a dude on /pol/ who printed a few 20 or so copies and sold them (and pretended it was written by Ben "Glock in every negro cock" Garrison)
>>7678910
No, the square of any function is not an even function, however, if a function f(x) contains only even powers of x (e.g. x^2, x^4) it is an even function, and thus symmetrical around the axis representing f(x)
Enough endless bickering and let's compile a list of good calculus books at various levels to point people to.
>>7653912
>>Single Variable Calculus
>Weak Students
"Calculus Made Easy" by Silvanus Thompson and Martin Gardner
"Calculus: An Intuitive and Physical Approach" (Dover) by Morris Kline
"Elementary Calculus: An Infinitesimal Approach" by Jerome Keisler (Uses infinitesimals)
"A First Course in Calculus" by Serge Lang
>Strong Students
"Calculus" by Spivak (Good mathematical...
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>>7653917
Is infinitesimals good or bad? What are the benefits/ disadvantages? I've only taken 1 semester of calc back in high school (dropped cause I did poorly.)
>>7653917
>>Analysis
>Single Variable (with Metric Spaces)
"Real Mathematical Analysis" by Pugh (weaker version of Rudin)
"Principles of Mathematical Analysis" by Rudin
"Mathematical Analysis" by Apostol
"Mathematical Analysis I & II" by Zorich
>Multivariable Analysis
"Functions of Several Variables" by Fleming
"Analysis on Manifolds" by Munkres
"Calculus...
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97% of scientists accept human made global warming.
http://content.usatoday.com/communities/sciencefair/post/2010/06/scientists-overwhelmingly-believe-i
n-man-made-climate-change/1
Found by the National Academy of Sciences.
Read the paragraph where it explains the 3% that doubt human made global warming:
"As for the 3 percent of scientists who remain unconvinced, the study found their average expertise is far below that of their colleagues, as measured by publication and citation rates."
Pic related: the guy on the left is statistically...
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>>7692020
You can't get published or cited much for denying AGW. A few scientists are in on the conspiracy, the rest are just working on what's getting published so they can get funding.
>>7692020
>the study found their average expertise is far below that of their colleagues, as measured by publication and citation rates
If that's the case, consider me convinced...
>>7692020
>study done by pnas
>Only climatologists surveyed, no physicists or external third party simulation experts.
Yes, the guys pushing politicism into science in the first place surveying the cult who gets the most funding out of it certainly won't be baised at all!
As someone who works in medical research, I have found it very surprising to see just how important race and ethnicity are in determining how effective certain medications are in people. In general, common medications like anti coagulants, ACE inhibitors, etc just don't work well in blacks compared to whites or vice versa. I find it fascinating that something as basic as physiological receptors can vary so much between the various races. Are racial differences in biology just an uncomfortable truth that is hidden from those who don't need to know? explain to me how we can be the same genetically (same by having same allele frequency between races and not having any unique alleles found in only one race) when there are all sorts of anatomical, disease states, and medication response differences that can be predicted solely by the group of aesthetic features commonly referred to as "race"?
example review article from american heart association:
http://circ.ahajournals.org/content/118/13/1383.full
>>7691728
>I have an exception to the rule, therefore you're racist
Come on now
>>7691730
I guess we should really stop our cheese consumption.
Have a calculus exam tomorrow. What is the reverse chain rule when used in finding integrals? Plz.
U sub and integration by parts
You have no fucking life, what the fuck are you even doing. Fuck calculus.
Fuck math. 2+2=4.
We are reprinting what we consider to be the most influential scientific papers in history. Please check out our campaign and let us know what you think.
Maybe if I put the link in...
http://kck.st/1PsoSfo
Do you think non-hipsters will buy it?
Hello /sci/. First time posting on this board, I usually post on /b/ or /mu/. At my school, I started up a combat robots club and currently me and my team are coming up with different ideas for what to build and I wanted to hear your opinions with what we came up with. So we decided to go with a horizontal spinner though we're not sure if we want to make it a full-body spinner or a an overhead spinner. The robot will be run on 5-6 NiCad batteries, 2 of them for the drive motors and the rest for the weapon motor. The chassis will use aluminum reinforced with titanium. We're...
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Put the center of gravity and the profile as low as possible. If anything battle bots has ever taught me it's that getting flipped is the most common cause of "death".
ht-9 or tungsten tips
>>7691341
Yeah, I've seen that alot, and that's my main concern with most horizontal spinner designs. Would you say attaching magnets to the underbelly of the robot be a reasonable idea or would the sawblades coming up from the ground only ruin them?
Motivate me, /sci/...
We don't care
>>7691219
If you need strangers on the internet to motivate you to do something just give up and become a clerk who spends the remainder of his pittance on weed.
That being said, you can crawl out of this hell if you try!
>t. high school dropout who has a masters at 27
>>7691233
I am also a high school drop out but I start university in January and want to be prepared.
post your digit ratio
>>7691132
1.025
>>7691139
Male or female?
>>7691141
male
it's index/ring finger, right ?
Why the fuck is there so much controversy about this?
It's gone massively overbudget considering the first one got destroyed due to a stupid design flaw even the Empire's best engineers couldn't find. I hear this one still has a tunnel to the energy core large enough you could fly a ship through it.
because they don't run on jet fuel
>>7691075
The outline of the guy above the Death Star is obviously shopped in.
Smart kid, lol!
See me ;)
>>7690967
She isn't wrong though.
Also, shouldn't this belong on Reddit instead?
>>7690967
psychologist here. your post shows a high degree of self-loathing and projection regarding your micropenis, microcephalus, morbid obesity, scat- and pony-fetish and general feeling of being a failure.
Hey, i was just wondering, time is define by mouvement. So, if there is no mouvement of atoms at the absolut 0 and not even the atoms can move, wouldn't that mean that time would stand still?
>>7690942
yes
http://lesswrong.com/lw/qp/timeless_physics/
>>7690942
>Hey, i was just wondering, time is define by mouvement.
Nope, it's often measured by movement, but your claim is like saying I don't have height if I don't have a ruler.
>>7691197
not OP, but thanks for the site, it's pretty neat
Daily reminder that the Higgs Boson would have been found in the 90s had Congress not cancelled the Superconducting Super Collider in 1993. It would have been 3 times as powerful as the LHC.
>>7690908
>USA
>Accomplishing anything of value
>>7690908
Taxes
How would the discovery of the Higgs boson have accelerated scientific progress?
Please help a retard. What does this guy mean when he says consciousness is an 'illusion'?
He's a fucking dipshit. Consciousness plainly exists. Some people equate consciousness with something like a soul, so he's probably attacking that straw man
>>7690905
Def A: Deterministic: unique solution to an initial value problem of a dynamical system
Def B: Universal Initial Value Problem: a system of differential equations and initial values that uniquely describes the universe
Def C: Free Will: some factor that allows for non-unique solutions to the universal initial value problem
Axiom A: the universe is deterministic
Lemma A: The universe is uniquely determined for all points in time: this follows from the definition of determinism
Def D: Consciousness is...
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>it's just neurons lmfao
Fantastic theory.
