/sci/ - Science & Math

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Anonymous Thu 17 Feb 05:46:01 2022 No.14237895 View Reply Original Report

Quoted By: >>14237995

>have math class with turbo lefty professor
>she has dyed hair, lgbt flags in her office, books on systemic racism, etc.
>turns out to be a total bitch and is super unhelpful
can anyone else relate?

5 posts omitted

Anonymous

Anonymous Thu 17 Feb 2022 06:40:07 No.14237995 Report

Quoted By:

>>14237895
It's really, really weird for me to read things like this. In my uni, my profs never ever brought up any kind of politics over 4 years. There are still absolute bitches though.

Anonymous

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Anonymous Thu 17 Feb 2022 06:51:43 No.14238011 Report

Quoted By: >>14238038 >>14238068

>taking chem with tiny middle aged asian lady
>blows through all the lectures at turbo speed
>completely checked out, couldn't give a fuck
>whenever anyone asks a question she looks annoyed and confused and gives some unhelpful nonsensical answer
>grades insanely harshly on exams and quizzes which are full of essay questions asking us to explain concepts
>we get zero points if the answer doesn't exactly mirror the answer in the key, even if it contains all the correct info
>I tried to argue with her once and she literally told me that it was more important to memorize the correct answer than to understand what the answer means

Anonymous

Anonymous Thu 17 Feb 2022 06:59:56 No.14238038 Report

Quoted By: >>14238056

>>14238011
she found out a way to disguise the fact that she doesn't know what shes talking about with blusterous bullcrap

Anonymous

Anonymous Thu 17 Feb 2022 07:07:42 No.14238056 Report

Quoted By:

>>14238038
oh yeah for sure.

Anonymous

Anonymous Thu 17 Feb 2022 07:15:22 No.14238068 Report

Quoted By:

>>14238011
>unhelpful nonsensical answer
Brainlet cope.

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Anonymous Wed 16 Feb 12:36:23 2022 No.14234860 View Reply Original Report

Quoted By: >>14237470 >>14238039

Prove 2+2?4

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Anonymous

Anonymous Thu 17 Feb 2022 01:20:52 No.14237233 Report

Quoted By: >>14238021

>>14237159
2 + X + 2 - X = 2 + 2 = 4

Anonymous

Anonymous Thu 17 Feb 2022 02:33:51 No.14237451 Report

Quoted By:

In the GF(3)
2 +2=1

Anonymous

Anonymous Thu 17 Feb 2022 02:41:39 No.14237470 Report

Quoted By:

>>14234860
Consider two factories, each has two working machines as well as half of another machine. So each factory only has two machines, but both factories together have five, so it is not in general true that 2+2=4

Anonymous

Anonymous Thu 17 Feb 2022 06:54:35 No.14238021 Report

Quoted By:

>>14237233
An environment where this is true is unlikely to exist.

Anonymous

Anonymous Thu 17 Feb 2022 07:00:08 No.14238039 Report

Quoted By:

>>14234860
base3 2+2 = 11

someone else posted this too.

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Anonymous Wed 16 Feb 20:03:11 2022 No.14236074 View Reply Original Report

Quoted By:

The topic of climate change regarding temperature is one thing. But the topic in the media HARDLY ever covers the fact that the air quality is shite. Especially in cities and sub-urban areas.

Lichen is a good indicator of good air quality. It thrives in good air quality. You see lots of it in rural parts.

I live on a main road. When I clean the outside of my window it is always black soot on the tissue. That's just particulate matter. All the other shitty gases alongside CO2 and monoxide making for poor air composition.

So poor quality won't have a good effect on us.

We should just have good ole nitrogen, Oxygen, Argon and a bit of CO2 for plants.

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/sfg/ Spaceflight General

Anonymous Wed 16 Feb 07:45:47 2022 No.14234442 View Reply Last 50 Original Report

Quoted By:

Orbital Honking edition

prev: >>14231139

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Is chamomile a stimulant for black people?

Anonymous Thu 17 Feb 05:38:20 2022 No.14237883 View Reply Original Report

Quoted By: >>14237898 >>14237957

Is chamomile a stimulant for black people? Papers say that alcohol is and it also takes less to get them drunk but the stimulation (vs sedation in white people) leads to binge drinking sessions. Does the same logic apply to all GABA substances like, say, chamomile? Can somebody do the science and math on this?

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More sexual partners, more cancer

Anonymous Thu 17 Feb 02:45:23 2022 No.14237484 View Reply Original Report

Quoted By: >>14237514 >>14237928 >>14237931

Scientifically speaking, why is having more sex correlated with cancer?
https://pubmed.ncbi.nlm.nih.gov/32054661/

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A Mathematician's Apology

Anonymous Wed 16 Feb 04:11:39 2022 No.14234032 View Reply Original Report

Quoted By: >>14234560 >>14236110 >>14237858

Just read it, a few minutes ago. He doesn't prove that Maths is beautiful and instead mostly writes about themes Maths is strongly associated with. I agree overall, but the work could have been lengthier. 7/10.

2 posts omitted

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Anonymous Wed 16 Feb 06:21:38 2022 No.14234312 View Reply Original Report

Quoted By:

Deck of cards probability.

If I pull a card at random and ask you to guess the card you have a 1/52 chance of getting it right.

I then remove 10 random cards from the deck and discard them without you seeing them. I then pick a card and ask you to guess it.

Are your odds still 1/52? Does the absence of unknown cards affect the probability at all?

15 posts omitted

Anonymous

Anonymous Wed 16 Feb 2022 17:16:32 No.14235550 Report

Quoted By: >>14235600

>>14235514
That’s good to hear. My professor has convinced half the class missing cards affects the probability. I feel like I’m going insane

Anonymous

Anonymous Wed 16 Feb 2022 17:30:58 No.14235591 Report

Quoted By:

>>14234675
>>14234678
I was gonna disprove you but >>14234419 already proved you wrong

Anonymous

Anonymous Wed 16 Feb 2022 17:34:02 No.14235600 Report

Quoted By:

>>14235550
Send him a private email (don't embarrass him publicly, people don't respond well to that)

Here's what you tell him:
The probability of selecting your card is
(probability that it was one of the 10 * the probability of selecting given it was one of the 10) + (probability that it was *not* one of the 10 * the probability of selecting given it was *not* one of the 10)

The probability that your card was not one of the 10 removed is
$\frac{51}{52}\frac{50}{51}\frac{49}{50}\dots\frac{42}{43}=\frac{42}{52}$

So the total probability is:
$\frac{10}{52}*0 + \frac{42}{52}*\frac{1}{42} = \frac{1}{52}$

This should convince even the most stubborn retard

Anonymous

Anonymous Thu 17 Feb 2022 02:40:05 No.14237465 Report

Quoted By:

just make a repeated simulation where you see what percent of the time the picked card is the ace of spades, and whether that's affected by 10 cards being discarded or not

Anonymous

Anonymous Thu 17 Feb 2022 05:09:53 No.14237845 Report

Quoted By:

0

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Anonymous Mon 14 Feb 16:05:26 2022 No.14228719 View Reply Original Report

Quoted By: >>14237804 >>14237825

Why do the moon exist?

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Anonymous

Anonymous Thu 17 Feb 2022 04:47:14 No.14237796 Report

Quoted By:

>>14237349
thats just someone on the other size of the world (time (time is a circle) ) flying too close to the sun. and because it is so close to the sun - and before he is burn-ed up - he appears to be big! its like... shadows
and it stays there because it takes time for the light to travel (a long time (time is still a circle (unrelated) ))

Anonymous

Anonymous Thu 17 Feb 2022 04:50:26 No.14237801 Report

Quoted By:

>>14237670
the first two are the same and i cant use yandex right now currently um, trying to
decipher the runes to do baidu
>EVERYONE LEFT (POOR) FACEBOOK OUT TO DIE!!! QQ

Anonymous

Anonymous Thu 17 Feb 2022 04:51:49 No.14237804 Report

Quoted By:

>>14228719
why does anything exist

Anonymous

Anonymous Thu 17 Feb 2022 04:55:23 No.14237810 Report

Quoted By:

>>14237670
baidu literally just out-right calls it a lie and recommends a bunch of pop-culture songs or an artist or something

Anonymous

Anonymous Thu 17 Feb 2022 05:02:39 No.14237825 Report

Quoted By:

>>14228719
Why do grammar exist?

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Vampire Math Question

Anonymous Thu 17 Feb 04:23:42 2022 No.14237735 View Reply Original Report

Quoted By:

I live in Transylvania with a population of 7 million people and I have 7 girlfriends. 1/3 of one percent of the female population is a blood sucking vampire, meaning there are 23,100 female vampires in my country, ( the distribution is a random) what are the odds that I one of my girlfriends is a vampire? If I have 10 friends who are also each dating 7 different women, what would the odds be that one of my friends was dating a vampire? Would my odds of dating a vampire scale up and down with an increasing sample size (population and number of gfs)? What's the easiest way to describe the parameters and the formula for a solution. Thank you. Asking for a friend.

https://youtu.be/A1dY6OkPb7E

Anonymous

Anonymous Thu 17 Feb 2022 04:36:51 No.14237770 Report

Quoted By: >>14237786 >>14237799 >>14237817

assuming one of your girlfriend's chances for being a vampire is also 1/3 of 1 percent, it'll be the complement of the probability none of your girlfriends are vampires. so 1-(1-1/300)^7. for your friends it's 1-(1-1/300)^70

Anonymous

Anonymous Thu 17 Feb 2022 04:42:06 No.14237786 Report

Quoted By:

>>14237770
So would be about 2.3% chance that one of my 7 my girlfriends was a vampire?

Anonymous

Anonymous Thu 17 Feb 2022 04:48:46 No.14237799 Report

Quoted By:

>>14237770
How do adjust the formula 10X where I have 70 girlfriends in a country of 70 million but the same per capita number of female vampires?

Anonymous

Anonymous Thu 17 Feb 2022 05:00:52 No.14237817 Report

Quoted By:

>>14237770
I see where I'm fucking this up. Ok. Well I feel better.

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Is chamomile a stimulant for black people?

More sexual partners, more cancer

A Mathematician's Apology

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