What is the difference between a benzothiazoline and a benzothiazole? I'm reading a paper right now where they seem to be using the two interchangeably at times.
>>8506064
LOOK AT THE PICTURE. SEE THE HYDROGENS REMOVED THE DOUBLE BONDS FORMED.
>>8506065
I saw that.
It sounds like I should just blame their fucked word usage to them being from India...
>>8506064
>not using a graphic abstract
Can anyone help a brainlet?
(a) Prove that the following is a valid deduction rule:
P → Q
Q → R
∴ P → R
(b) Prove that the following is a valid deduction rule for any n ≥ 2:
P1 → P2
P2 → P3
.
.
.
Pn−1 → Pn
∴ P1 → Pn.
"I suggest you don’t go through the trouble of writing out a 2^n
row truth table.
Instead, you should use part (a) and mathematical induction."
Can anyone help with part b. I got part a
>>8505838
>base case
see (a)
>inductive case
assume it holds for n-1
then
[math]P_1 → P_{n−1} [/math]
[math]P_{n−1} → P_n [/math]
so by (a)
[math] P_1 → P_{n} [/math]
QED
>>8505838
Show it's true for n = 2, then show that it being true for n = k implies that it's true for n = k + 1.
>>8505860
So I can use the base case with n=3 like in (a)? I thought a base case needed to use the lowest possible n which would be 2.
You're supposed to do this.
PS: in both integrals, a=0, b=2pi
>division by zero
Just compute it?
Take a long a dreadful look everyone, because this is what pseudoscience looks like.
Jesus titty FUCKING Christmas
The Internet, social media and this generation were all terrible ideas. I choose not to look at that anymore sir.
Can someone link that last article please
>>8505687
"This Nigerian king..."
"It's probably just sticky skin"
"Sometimes when I sneeze, my eyes close"
Isn't this the most existentially terrifying graph in the history of humanity?
what happens when we breach into the meta stable zone
Wuts dat
>>8505685
All I am inferring from this is it has something to do with higgs-boson and the Large Hadron Collider.
Can someone brief me on what this is and why it is bad?
Is what people say about pulling an all night the night before an exam a lie? A feel it would greatly enhance my performance tonight with a couple 5 hour energy drinks thrown in the mix.
>>8505638
>Is what people say about pulling an all night the night before an exam a lie?
It would help if you told us what you think "people" are actually saying
>>8505638
Maybe if you're reviewing and not learning like most people do. And you ensure you get proper 8 hours rest before doing the allnighter, which I assume leads directly into the test.
Itll help you a little while youre up but the crash will make it much harder.
Just do some meth and stay up an extra day, its not like you do it all the time.
Why do the majority of teenagers and people in general commonly share the mindset that math and other school subjects are useless and they will never be used in life?
little understanding of how the world works
>>8505633
teenagers are literally retarded. I think the hormone imbalances kick their IQs in the nuts or some shit, because it is the stupidest demographic on this green earth.
>t. edgy teenager trying to appear superior to his own kind
>>8505633
Because they are being taught math without being given examples which are applicable in the real world. They're us all told to find the area of a square or memorize SOHCAHTOA, but never nudged in the right direction on where it can be useful to them so they don't give a shit.
If highschools threw in finance classes and made everyone do physics and chemistry instead of making them electives, teenagers would have a better appreciation for math as a tool instead of just viewing it as something they have to do when they go to school. Plus the mandatory finance classes would probably help us ensure we don't have as many poor people who are poor because they don't understand budgeting.
Was he a Meme scientist?
If so, was he as bad as NDT?
>If so, was he as bad as NDT?
I'm watching the new cosmos right now and loving it. Whats the beef with NDT?
Any "scientist" who regularly makes it to the media is a meme.
Do you hear of Galois, Maxwell and Ramanujan every day on your Reddit-tier hipster popsci tumblr blogs?
Has there been a week in your life where you haven't been reminded of the existence of retards such as black science man, le mechanical engineer specialized in climatology and evolution, le pedo atheist, Dr. Wheelchair and le galaxy buddy?
>>8505505
The Main beef that people have with him is that he keeps talking about other fields of science that he's not qualified in, check his Twitter as an example.
Sagan did the same thing with Climate Change I believe and his hypothesis turned out to be wrong. Other than that, I don't think he made any other assertions.
Picture is self explanatory. /sci/ what does the Observer observe? Obviously Vdude can't > c, but with classical mechanics his "velocity" to the observer would be c + 0.5, So what does the observer witness /sci/?
>>8505498
Classical mechanics isn't accurate at speeds near c. Add your velocities with relativistic equations and you'll see that c > Vdude > Vrocket.
>>8505498
c + 0.5
>>8505498
>See the answer to this example question
I know this is gonna sound like a trivial and pointless question, and that !because it is; but why isn't there a unit name for "per meter" like there is for "per second(Hz)"?
>>8505375
Because temporal frequency is much more useful than spatial frequency. The only use I can see of it is in study of waves with D'Alembert's equations, and even then it's just easy to say 'per meter' or 'meter minus one'.
However frequency has a ton of uses in daily live and scientific life.
The better question is why there isn't a unit name for momentum.
>Reject the idea man is not at a special place in the universe
>Accept the idea man is at a special time
REALLY MAKES YOU THINK.
is* is at a special place ffs
>>8505235
>>Reject the idea man is not at a special place in the universe
Look at me mom, I read popsci.
>>8505235
The fuck are you even trying to get across, retard? Come back when you can speak English.
s = vt - 1/2 at^2
i need you guys to rearrange this for t
It's a relatively simple quadratic equation.
Just pull s on the member on the right.
-0.5a*t^2 + v*t - s = 0.
Look for the roots. If t is a time, choose the root > 0 and argue that a time is always positive so the other solution doesn't make sense.
>>8505173
> time is always positive
So the universe just came into existence this very moment? Wait, now I have an illusion of negative time where I started typing this post... weird.
Is math discovered or invented?
both
the symbols and the syntax is obviously developed by humans
but the theorems and connections seem to correspond to reality
I talked to an experimental particle physicist about it
and he said that the "underlying mathematics" of particle physics has an unknown origin
the standard model describes this math
so, who knows? I just think it's fascinating that we can model reality with math, then do pure mathematics on it (like algebra) and then come up with a theorem that then is confirmed in experiments
even if mathematics turns out to NOT be the language of the universe
then it's pretty damn close
one of humanity's greatest achievements, for sure
>>8505072
Is language discovered or invented?
Is this a math thread or a philosophy thread?
What are /sci/'s thoughts on Pharmacy/Pharmacists?
>>8505064
Pharmacists = Doctors - Practical Skills - 100k a year + some soul
I think this because if you go directly to your pharmacist and tell him "nigga I got a headache" he can hit you up with some pills but if it turns out you need surgery that nigga ain't going to know shit about healing you. All he knows is the theory of "If sick, apply medicine. If sick after medicine, apply more medicine. If not sick after more medicine, god job".
And they earn less than doctors.
And their education path is probably not as soul sucking as medicine so probably pharmacists still have souls, contrary to MDs.
>>8505073
If I find a medic that makes you take a MRI because you have a headache I will give you a call.
Otherwise good bait, I saved it for later.
>>8505073
pharmacists aren't supposed to diagnose you and doctors don't sell pills. its just a division of labour. i do agree though that i prefer the idea of pharmacists as people to doctors.
>Just finished undergraduate in biochem
>heading to grad school soon for Genetic Counseling
>how likely, or how soon should I expect my job to be replaced by AI?
>>8505048
genetic counseling. wtf is that.
>>8505051
Service job, just counseling people on their genetics, or their babies potentially issues. No creativity needed.
>>8505051
gene therapy