Archived threads in /sci/ - Science & Math - 386. page
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Can anyone upload notes or textbooks for A-Level Further Maths? (PDF preferred)
Where I live textbooks for this particular subject are expensive af, and my school doesn't offer notes.
Pic related.
>>7811149
∫1/(a^2+x^2)dx= 1/2a tan^-1(x/a)
>>7811149
FP1:
Be familiar with inductive proof and matrices
FP2:
Be familiar with Taylor series expansions, usually with x0 = 0
FP3:
vectors, lines and planes in 3 dimensions.
>>7811191
I have no material to go on with learning those though lol
hi, i came here to find cool people who likes a math that would help me with this! don't be rude please.
If y varies directly as the square root of x and x = 25 when y = -15, find x
when y = -108.
i have been doing this exercise for hours, so please help!
y(x)=a*sqrt(x)
y(25) = -15
What's a? What's the function f, such that f(y(x)) = x?
y(x) = -108
f(y(x)) = f(-108)
x = f(-108)
Plug and chug.
>>7811143
X is 6
What kind of jobs can you get with a degree in Health Sciences, Google didn't help much. All I know of so far is a cardiovascular perfusionist, which honestly isn't that bad aside from being on call. Anything else? Feel like I'm missing a lot.
>>7811128
Health Sciences gets you nowhere unless you have an MD
Look at local job posting websites in your area like Iike indeed or craigslist and search the area of study you'd like to research. It's a good way of getting an idea of the daily responsibilities and qualification requirements, to get an idea of what you're getting into, and how to start.
So we know water is a polar molecule due to London forces, which is why creating what is basically a capacitor aids in the separation of water into oxygen and hydrogen using electrolysis.
So what exactly happens when you run an arc electrode underwater? What electro- chemical reactions take place?
>>7811099
You do electrolysis inefficiently!
>> creating what is basically a capacitor
No.
>>7811110
How is it not a capacitor?
It has two voltages suspended through a cathode and an anode with an impermeable medium between them.
>>7811110
How come nobody on this god damn website knows what the fuck they are talking about?
Look up capacitor in a textbook sometime, you god damn pleb, thats EXACTLY what a capacitor is.
Any MatLab Geniuses out there. I am completely lost on how to solve this. I think I need to use a while loop. Any help would really be appreciated.
while pival-pi >err?
>>7811091
>matlab geniuses
>approximating via series
toppu kekku
Yeah, you do need to use a while loop.
In informal terms, you're doing this
while |(pi - piVal) / (pi) * 100| > err
add another term to the approximation
increment my location in the series
when that's done you return your last piVal and how many terms you needed
God, yall are better help than my teacher.
Because my teacher makes us do ridiculous 10 minute quizzes (around 5-8 problems each) which stresses me the fug out that I start sweating rivers of water enough to hydrate Africa.
I either end up doing simple mistakes like add fractions wrong and I would have to re-do the damn thing (which wastes a lot of time) where then I don't have enough time to double check.
I have a pathetic and sad excuse grade in this class (C-) although I understand the material extremely well but I work at a slower pace because at a fast pace I make lots of mistakes and go full...
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Stop being stupid
>>7811074
Do the questions, you are most confident in first, and then do the questions you aren't so confident with.
Yeah, I get what you mean. I really don't like it when the questions are asked differently, but then this is where you need to be intuitive with your mathematical skill versus straightout solving the question...
>>7811074
>although I understand the material extremely well but I work at a slower pace because at a fast pace I make lots of mistakes
You're lying to yourself. Probably.
Tests don't have tricky problems that require a lot of deep slow thought to solve.
If you can't do the mechanical shit on a test very fast and without errors, you need more practice.
You might have a shaky grasp of it that lets you muddle through a problem in 3x as long as it should take you. That's...
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How do people believe in stuff like this?
https://www.youtube.com/watch?v=4WPBDte2AfY
If you want a good laugh watch his videos, but how do you explain his dedication to being contrarian? is it just anti-authority? explain.
pic unrelated
>>7810759
People are stupid.
>>7810788
except me!
>>7810759
why do people keep posting shitty pootube videos made by stupid people and then want to discus them?
You realise that no one with a modicum of intelligence cares? It's not science, nor is it maths.
Shove it up your arsehole next time.
can /sci/ help me understand magnetism? I'm stuck on a particular concept
As an electric charge moves through an electric field it becomes subject to the Lorentz Force. Why? Is the particle gaining some kind of magnetic charge as it moves? If so, does the fact that the particle is moving perpendicular to the magnetic field mean that its charge is an imaginary number?
>>7810756
http://galileo.phys.virginia.edu/classes/252/rel_el_mag.html
>>7810756
A moving charge is an electric current. Currents generate magnetic fields.
How does one become an actuary.
>>7810721
If you're in the USA, it goes something like this.
1) major in mathematics,
2) Have a mastery of probability/planning in particular, and
3) take a sequence of three exams.
Somewhere around here, I think, you're bona fide. Step 4 is inevitably to know people/network like a normie as always, and actually land whatever position.
t. math major one of whose fellow students expressed pleasure in completing her actuarial stuff toward the end of undergrad.
Go to beanactuary.com
Go on actuarialoutpost.com and find a user that wouldn't mind exchanging some information about the process with you.
>>7810721
Actuarial Science is dead. Data Science is the new Actuarial Science.
So, I solved the information paradox. If from the point of view of an external observer an object literally never falls inside a black hole because of time dilation, then there's no information lost since we never lose sight of the object! How do I go about this guys? Do you like send a letter to NASA and they send you a check? You might want to consider getting another job hehe
>>7810508
Describe what you think you mean by time dilation?
>>7810508
I'll take it one step further. From the point of view of an external observer an event horizon and thus black hole never even forms to begin with because such a process would take an infinite amount of time, so even considering the possibility of an object falling in it is pointless
>>7810512
Yeah right...this won't have your name on it. This isn't something I'll share.
>real analysis 3 oral exam tomorrow
>real analysis
>>7810444
why is that alien holding a crowbar ?
>>7810453
that is a golf club.
Hey anons, I'm doing linear algebra and reducing matrices takes me way too fucking long. I need some tips to do it faster. BTW no calculators
>>7810343
practice more
there's no magic to doing them faster in general any more than there is magic to adding general numbers fast. You're just uncomfortable with the machinery.
also
>reducing matrices by hand
>ever
nice lin alg for engineers course
>>7810343
>doing them by hand
m8 if you reduce more than like 10 matrices in your entire life you're doing it wrong.
It's ok to do it a bunch of times to understand the technique but then either use matlab/numpy or write your own program.
>>7810343
Easy. Skip immediately to the proof-based problems.
How did something as complex as inflammatory response develop evolutionarily?
I believe it should be the central idea in the creationist "argument for complexity" rather than the eye, which is straightforward sensory.
>>7810242
You'd only say that because you don't understand the idea of irreducible complexity.
>>7810242
Organism develops mutation that provides basic remediation in cases of cellular trauma --> organism survives and passes on gene with high success. Over a long of time frame, more genetic alterations are selected for in favor of an immune system -- both adaptive and innate.
>>7810289
so you're saying the evolutionary need for a penis happened to evolve at the exact same time as the vagina? gender is the ultimate counter argument to evolution.
checkmate atheists
Virtually every scientist I've known or read about eventually got married and had a family, despite their alleged autism and anti-social behavior.
Why this deception?
>>7810004
>alleged autism and anti-social behavior
[Citation needed]
>>7810004
What deception exactly?
Autism is a mental deficiency. Why would you be surprised that famously smart people AREN'T autistic?
If you only eat soup, do you poop or piss it out?
>>7809964
Yes
>>7809964
You piss it out, but with your butt.
Ensuring feuds liquified in your stomach anyway. So, like everything else, you poop out what you don't absorb and piss out what you do.
