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If you want advice with college/university, go to /adv/.>>>/adv/Reminder: /sci/ is for discussing topics pertaining to science and mathematics, not for helping you with your homework. See the rules page for details.
What is it? Ayyliens? Ice? Larger gif>https://www.nasa.gov/sites/default/files/thumbnails/image/pia19547-1041b.gif
>>7256446"were assembled"c'mon anon i'm not a tinfoil hat guy but...
>>7262575It's a 3D projection constructed from 2D data of a 3D object from different perspectives; the flyby animation was assembled. Assembled != faked.
From the Dawn mission update page:May 15, 2015 - Dawn Spiraling LowerDawn is using its ion engine to maneuver to its second mapping orbit, which will be 2,700 miles (4,400 kilometers) high. It will reach that altitude in early June.During the course of the day today, Dawn’s altitude will decrease from 5,500 miles (8,900 kilometers) to 4,800 miles (7,700 kilometers).Tomorrow the spacecraft will pause ion-thrusting to take pictures of Ceres for navigation.http://dawn.jpl.nasa.gov/mission/status.html
>>7255663>God I just want them to find something before I die.We have found elusive evidence of Dyson Spheres and engineered galaxies.There is also the mysterious Dark Flow.Plenty of evidence of artificial engineering of the universe.But on a scale of billions of years ahead of us which we can't distinguish clearly from natural processes, because they are so gigantic.
>>7256609One of the most fascinating objects in Solar System is Triton.It has atmosphere, cryovolcanos, probably subsurface ocean.We have only seen it once.
Hey /sci/Inspired by Scott Young's MIT Challenge. I plan to complete MIT's Theoretical Mathematics curriculum (12 subjects) in one year using MIT Open courseware. This means that I will have to do 1 subject a month. Does /sci/ have any advice or comments about this? I have attached the subjects I plan to do. It excludes only one subject; MIT's seminar subject. I replaced it with Street Fighting Mathematics.
>>7264747This is interesting, are these really all the core subjects you need to get your Math degree?? Anyway yeah, I have good advice, don't follow MIT's single variable calculus, it's not as rigorous as you would need to properly deal with analysis and linear algebra. Use a more rigorous calculus book then proceed to wreck face with all the other topics, also, does MIT not require a first course in probability before you do systems analysis??
TAs or faculty members (>Implying) of /sci/,How do you handle students crying in front of you? It's always the most arrogant girls too who's egos start getting crushed at the first difficult upper level courses. Somehow I always end up looking like an asshole for not giving them marks they don't deserve.Also my prof. is usually apathetic if they break down during tests and run out crying. Is he delegating the task of calming them to me or am I just supposed to ignore them?Also general STEM TA/teaching thread, share your stories and frustrations.
>>7264742No, it's "shit" the United State's Congress, the UN, ABET, and the international engineering community through the Washington Accord says.Please lurk more and read about life before posting on the internet.
>>7264744What are you even talking about?
>>7264695I think math professors just like to troll their calc 3 classes. Mine started with stokes and greens theorem and worked backwards.
These people that work too hard don't really get the best grades, and not because of their "genetics", but actually because of their method of study. Studying isn't about simply "knowing", but about understanding. If you get the logic and the workings behind a certain thing, you got most of it. Now, all you need to do is "know" it - and that is the part that recquires the biggest amount of study, depending on what you are studying.
>>7264746I am sayingthat people should not focus on:I have to go to this place and study to have any kind of sucessSuccess will come to you when you are capable of it.Dont you think that people will be looking for you when you can do extrodianry things no matter what kind of bullshit paper you have?
Let's ask some stupid questions that don't deserve their own thread.I'll start.I have an undirected graph matrix G represents a forest. Now I need to decompose G into k smaller graph matrices, each represents a tree.What is the fastest way to do this in MATLAB/OCTAVE?I wrote a recursive function on my own but I think there must be a better solution that I missed in my Discrete math class. Or maybe not.
>>7264335post your codedont copy paste, post screen shot
>>7264180is it precum or an actual load? precum is normal.
>>7264459get x1 from one row, put that into another row and get x2 from that row, and so on until you only have x4 = whatever, then take the row with x3 and x4 and replace x4, and so on
>>7263280pls respond
>>7263280>I got a B+ in Calc 2>>7264705gg
Yo /sci/, I haven't been on here since this board was first up in like, '10 or '11 or whatever so I don't know shit about scienceI found this doujin though and it seems to spout a lot of scientific stuff and was wondering if you guys would verify or explain how accurate it is.This is the exhentai link but I'll dump it anyway in case you lot can't figure out the science of sadpanda.Oh and no nudity, just lewdnesshttp://exhentai.org/g/705632/02a56dd483/
>>7264248Don't stop!>>7264241It's legit. Doing work with heat entails heat transfer to a lower temperature state.Not sure how the ice would interact with something colder than it.
>>7264566The shit about time manipulation causes this to be so retarded.Even if the energy from the air surrounding the time frozen ice would attempt to travel to it, it won't reach it. Because it's stuck in a state of zero change. So where does this energy go? I'd say that the force causing the energy to move to the ice wouldn't magically stop, but that the energy would be stopped at the border of where the ice's physical state in time is being suspended, essentially creating what used to be considered a firewall around event horizons.I'd also add that relative to the surrounding air, it wouldn't even need to be ice which is being suspendrf in time. What does an object whose molecules have stopped all motion and thermal energy values are 0 sound like? Sounds like absolute zero to me. So really ANY object suspended in time would simulate or outright achieve absolute zero and have the exact same effect. That is, if the suspended object is even still capable of emitting a force of attraction.
>/sci/ once again proves that it is comprised of people who barely graduated from high school.>>7264617This anon at least gets credit for being able to read.
>>7264241>2a is right>2b is bullshit as frozen time can't interact with shit>4 is bullshit, the heat would see the cube as invisible>5 only if 4 was right and you have 2 cubes at different temperaturesYou need an ESPer like this for that.
A read-only Turing machine is equivalent to a DFA, is this also the case for a Turing machine that can read and write, but only on the part of the tape where the input is/was? I.e. a bounded Turing machine, but where the markers are immidiately before and after the input?
>>7264687>is this also the case for a Turing machine that can read and write, but only on the part of the tape where the input is/wasNo, it can recognize palindromes with ease.
Discuss.
> out of a mysterious blue portal 5 angry, heavy red flies appear.> by bending space further, billions come breaking into the world and begin devouring the humans.> added weight of flies causes Earth to collapse in on itself creating a black hole.Black hole on scale = infinite weight. Fight me faggots.
>>7264536Can't put a black hole ON a scale.Checkmate atheists.Atheists: 0Pagans: 1
>>7264539But black holes are made of matter with finite mass but infinite density. Couldn't you just measure the mass before it became a black hole?
i say 1.5
>>7264050>By your logic if 500g of flies were flying above a set of scales the scales would pick them up.Are you implying they stay aloft without causing a downwards pressure on the air with their wings?Are you implying they DO cause a downwards pressure on the air but that the air, being pressed upon, collapses instead of pressing on the scale?What is your endgame here?
Are intuitionist mathematics complete? Complete in the sense that every theorem of intuitionistic mathematics can be derived from a given set of axioms.
I need to "re-learn"(study) highschool math in a week, can I do it? I have time to study everyday.Is there some book(or what books) that covers all the topics?I tried some basic equations yesterday and after some minutes, everything was coming back.
>>7262170>>7263278http://www.gallup.unm.edu/~smarandache/MyHighSchoolMathNotebook1.pdfthis seemed to be the best one I found, although I assume you also googled "high school math notes pdf"
>>7263316op here, I'm back.thx for the link dude, tbh I never knew that something like that existed...>mfw
for what exactly? the only math that would require "studying" would be trig, and yes you can relearn trig in a day. I did going into calc 1 my freshman year
>>7264064>for what exactlywhat do you mean?
>>7264110I think he'd like to know why you'd want to relearn ALL of highschool math, and not just specific parts of it.
/sci/ humour thread
>>7264606Astronomical means "Very large", and units are another name for a house
>>7264550The given algorithms will get you to a solution, but it won't always be the fastest solution. The tricky part is trying to find a way to get from any unsolved state to a solved one in the shortest number of moves.
>>7264717I know an algorithm that will find the shortest algorithm for any state
>>7263129I approve this joke
>>7263129My dad is a chemist and growing up this was one of the equations he'd keep spewing at me and telling me how hard it was to solve (He actually said it was H \psi = E \psi ). Growing up I could not figure out why he didn't just cancel out the \psi and get H=E
Hey /sci/, I'm really bad at calculus. Can you help me understand differential equations?So I have a differential equation:4y'' - 4y' + y = x*e^x + 2x - 16And I can solve the homogeneous case for when the left hand side is equal to 0, which is a half, which tells me I have repeated solutions such that y takes the form y = Ae^(x/2) + Bxe^(x/2) where A and B are some real constants. But I don't know how that helps me solve the inhomogeneous case and hence solve an associated initial value problem. Where do I go from here?
>>7264171top fucking kek
>>7264389I go to Melbourne Uni. I can't do the assignment because I don't get differential equations.
>>7264169you can solve by power series which is pretty easy imo 4n(n+1)a_n x^(n-2) - 4na_n x^(n-1) + a_n x^n = 2x - 16 + 0don't know how to put sums in on this formating
>>7264413so I did it except the last step and I goty(x) = xe^x - 4e^x + Qe^(x/2) + [24a_3 - 8a_2 + a_1)x + (8a_2 - 4a_1 + a_0)where Qe^(x/2) is your general solution you'd get from the rest of the serious after pulling out the a_n to satisfy the 2x-16.the a_n's might be arbitrary, but i didnt' feel like solving them
>>7264411do they even offer "computer science" as a major?i thought all they had was informatics (the sample coursework i viewed made this look like information technology) and software systems (software eng.).
Consider scenario A where a ball rolls off a table, hits the floor and bounces a few times until it comes to rest.. Now, also consider scenario A' which iss A in reverse. A' should still be a valid scenario, where the ball, at rest on the floor, starts to hop up and down, getting higher each successive bounce until it bounces to the height of the table and just makes it up. While it looks odd macroscopically, each individual interaction should be physically valid. So the initial state of A' is set up just so so that the seemingly random collisions of the air molecules just so happen to bump together in a pattern to create a sort of puff of air that lifts the ball into the air, and so on until the ball is back on top of the table.Regardless of weather 'puff of air' is the best way to describe what is happening, the point is that super weird things like a ball jumping onto a table, or an egg unfrying are technically physically possible, yet so unfathomably unlikely that they can be regarded as impossible.Now what about something falling into a black hole? In scenario B, you throw a ball into a black hole, and it gets sucked in. Would B' corrospond to the extremely unlikely scenario that is set up just so so that the hawking radiation just so happens to radiate particles that collide and take the shape of a ball moving away? What do you think? Also general black hole theory thread.pic unrelated
no
Dear psychologists, how do I get into the learning, calm mindset? Learning new stuff makes my brain feel good, sort of like an orgasm.
>>7264690Haha, I'm no Psychologist so you can ignore me, I just find it cute sometimes when students feel the same way you do. You don't gotta be calm, if learning makes you happy and you want to learn more, you shouldn't have to change anything. Granted if it really makes you unable to continue then...get some calming substances??
Has anybody else noticed that evolution is almost always explained backwards?For example, someone might say, "Giraffes evolved long necks to reach the leaves on high branches," when in fact they eat leaves from high branches *because* they evolved long necks though natural selection. They didn't do it by choice; it wasn't anyone or anything's intention. Actually, come to think of it, this kind of thinking is used in biology too... I can't be the only one this baffles.
>>7264653 (OP)# yes, the trend is that everything is justified by its consequences, according to some functionalist view, typically for breeding and the survival of the children until they themselves produce children able to breed. and when the biologists are not able to find a function to some capacity, some feature of some animal, they say **not everything is justified by its consequences, some skills or mutations can appear at random and kept or not**
>>7264653That's how Lamarckian evolution is explained and it's obviously wrong. Any good biology textbook will explain it through random mutations and statistics. Which is also how the idea of evolution can be applied beyond biological. Evolution is essentially a logical tautology "what is most probable to happen has the highest probability of happening".