how many questions can you do in one day?
Does anyone have a torrent or free copy of this book? I refuse to pay 100 dollars just to do my homework.
Help a retard. I've never seen the small 5 on question b. Is this a misprint or is it 3.2*5??
How many fucking inflection points are there on this graph? I tried everything from 1-6 inflection points, first determining 3 (CFH) and then 4 (CFHI) but apparently those are still wrong. And there are apparently more than 6??????
help me out, please tell me how many there are.
Inflection = was convex up (f'' < 0) but started being convex down (f'' > 0) / vice versa / straight
Your plot reads as:
(straight?), convex up, convex down, convex up, convex down, convex up, convex down, (straight?)
Hence 5(+2?) point of inflection
Inflection = point with zero curvature (can be best locally approximated with "circle" of infinite radius).
Here you see one such point at the very beginning (not clear),...
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What science fair projects have you done or seen that actually make a difference in the world?
can someone explain through science/biology how this guy was able to do this without screaming his ass off and freaking out?
meditation is training yourself to exert absolute control over your body/mind. It may look like they are sitting around doing nothing for 20+ years, but things like this are great for illustrating what zen physiologically is.
Why is cellular respiration and electron transport so hard?!?!? I'm literally gunna fail AP bio.
Faggots. N = L (1-d) Isolate and give formula for d. bet you cant.
How is controlled the expression of the first homeotic gene if there is any other embryonary gene exprimed (and therefore there is not transcriptional factors) ?
cal3 is a joke, I'm kind of annoyed. they honestly could have condensed all of this into two courses instead of three
When we have a function how can we place an irrational number along either axis? I mean, if we have a cos(x) function we'll usually mark pi along the x-axis and -1 for the y-axis. But isn't the axis just a continuous number line? How can pi exist on a continuous number line? Irrational numbers are not just decimal approximations.
You just draw stuff. Of course, you can bound the expansion of pi after the 10^x decimal and get down to distances small as atoms, something you can't resolve in reality.
The reals are merely a model for space. The assumption that our world is a manifold with a commutative coordinate function algebra is also just a physical assumption, there may not even by "points".
Because if we got infinitesimally close to 3.141592... we could always add decimals but we would never reach the value of pi - only approximations of it. I'm quite new to proper mathematics to be honest so I'm not explaining myself very clearly. Basically I just don't understand how irrationals - which as I understand are not just decimal approximations of numbers - can be represented on a continuous number line built around representing decimals
Does anyone know how to do these? Have a whole sheet of practice problems like this and can't for the life of me figure a single one of them out?
Can someone who's actually good at maths give me an explanation or something to help me get started?
Why is x / 7 roughly approximate to 14 * x / 100?
What are some common misconceptions when it comes to probability or random phenomena?
I'm going to be doing a small study on my senior students (I teach high school) and I wanted to examine what are some of their biggest misconceptions and how I can start addressing these.
Any teachers here?
If it's just high-school, then a great one is that one problem with the three doors and goats.
They fail to account for the fact that "He will always choose a door with a goat behind it" is valid and relevant information, completely changing the odds of your decisions.
Yep just high school seniors. I teach students that don't really have a strong interest in the subject, just want a credit in their senior year. The class is mostly ACT Prep and just general life skills math.
We will be looking at the monty hall problem though. That's a good one :)
How can i solve the toggle mechanism?
Is there a single loop equation or do I solve it as two mechanisms (four bar crank rocker mechanism and crank slider)
which one of you faggots is responsible for this
Can someone explain to me how light works? It has no mass, yet it's attracted by black holes. If it has mass, how is it able to go the speed of light? I thought things with mass couldn't go the speed of light?
Great thread! This will help me brush up on my meme understanding of general relativity. If you asked me over the Summer I would have been able to answer you probably because I was reading Kip Thorne's book: Black Holes and Time Warps.
This follows from the field axioms (next post).
Can the axioms be fixed so that [math](-1)(-1)=-1[/math] (next next post)?
(-1)^2 = -1 is true in characteristic two but not in any other characteristic
what do you mean by 'fixing the axioms'? you would no longer be working in a general field if you forced (-1)^2=-1.
>his imaginary unit is not cursive
>Fuck you Navient I currently owe $78k for Phd in computer science from UCLA.
Atiyah comes through with another solution to a long unsolved problem, proving the non-existence of a complex structure on [math] S^6 [/math]:
What is /sci/ reading? What problems are you working/stuck on? Progress on research/theses?
do we have confirmation that Atiyahs proof is accepted or not?
The dude is getting old and his abstract seems to suggest he didn't need any new ideas to solve it. Seems strange that the proof would of been missed for this long.
If you could send a post-it note back to the past to young Albert Einstein
what would you write on it to start him off?
Dear jewish little cunt
Please support hitler he is our only hope to advance science and make humanity progress.
Professor scanned part of this plasma physics book from the 60's. I don't understand what the colon notations mean... any help /sci/?
What happens in a person's body if they receive a blood transfusion but don't already have blood loss? How much extra blood can a body handle? What happens if a person has too much blood?
So i'm hella sick and I have a personal dilemma to solve. I have had 40°C fever for 4 days now and I can't decide what to do anymore. My options are:
>Take an 400mg ibuprofen pill to lower your body temperature by sweating for around 5 hours continuously. Can't catch any sleep by doing this.
>Do not take the pill but bare the headache till you fall asleep for around 45 minutes
How come the solution to powering Artifical gravity isn't as simply as putting magnates on the side of an elliptical ship and control long the strength of the magnets? The only problem I can think of is piloting would be a bitch
I've illustrated an example
Can anyone simplify the idea behind Complex numbers?
I would like to understand why most Quantum Physics theories are based of this and why is it coherent to accept them as a precise and inductive type of mathematics?
What do you not understand about them anon? Essentially it's just a 2D vector of 2 real numbers, one of which is multiplied by the imaginary unit i. i satisfies the equation i^2 = -1 [on this note I'd like to add that saying i = sqrt(-1) is sort of wonky since you lose uniqueness, but 'it werks' so engineers do that regardless].
In a way complex numbers are a lot more natural to 'end on' than reals are, seeing that now you have an inverse to any standard operation.
>Deduct that our universe has to be a simulation, makes no sense otherwise and is pretty much widely accepted for years and years
>Suddenly normies hear about this fact, start having an existential crisis and making up reasons and having wild assumptions as to why this a "more legitimate" basal reality
I find it funny that some these people are the same people will defend (not that there is anything wrong with it) conscious upload and the like.
>Doesn't believe in god, a greater being, a creator who created all life
>Believes that our world is just a simulation
Doesn't that contradict each other? Not saying that this is you, but I am sure there are a lot of edgy popsci fan atheists who happily bash religion yet totally believe in the simulation hypothesis since first hearing it. Pic somewhat related.
Im taking the GRE in 2 hours sci
Wish me luck brehs
Pls no bully
i have a cold
why does sneezing feel like a mini orgasm?
That's a good question. Just a while ago I tried inquiring /sci/ if there's any studies on the neurochemistry of sneezing but didn't really get any answers.
Apparently most people don't even really notice the euphoria of sneezing. It's hard to say if this is a matter of attention or different wiring.