0 - 2020-07-19 (page 1 of 2)

NoseBleed

00:02

how can someone fly like this

Captain Bohemian

What to learn to avoid being harassed？

Bullies were only in school, so as long as I didn't go to school, I wouldn't be bullied.

NoseBleed

hehe

u show them kung fu acrobatics

they will get scared

Captain Bohemian

But obscene men can be anywhere.

NoseBleed

budy building

tough guy doesn't get harassed as much as weak guy

u can freak them out with ur appearance and skill lol

Captain Bohemian

I have long got rid of bully problem, which occurred before I entered high school.

NoseBleed

00:16

I hope this doesn't happens to anyone lol

Captain Bohemian

But I have the problem of being harassed, which has occured probably since undergraduate school.

NoseBleed

bullies have very good social skill

@CaptainBohemian ????? wait .... a min that's illegal

aren't undergraduate very mature

it is wierd that people harasse in undergraduate school

I though undergraduate student doesn't care who u r what u do where u live

Captain Bohemian

Obscene men only harass women, l think.

NoseBleed

and u rarely know each other there

@CaptainBohemian may be he is mentally ill

Captain Bohemian

That's why only college female dorm buildings have guards 24 hours.

NoseBleed

00:24

I thought u were a guy lol

in that case buy chilli spray

Captain Bohemian

Obscene men are not necessarily your classmates.

Because university gates are opened 24hours, anyone can enter anytime.

NoseBleed

Sounds like he does sexual harassment

worst kind of harassment

Captain Bohemian

Obscene men may be adults growing from bullying boys.

NoseBleed

00:48

more like from perverts

NoseBleed

03:00

Bara Buti Maenorbe Colostombagh

►

NoseBleed

03:48

Ex-Apple Engineer Tells the Truth Behind iPhone 7

►

NoseBleed

04:26

Dschinghis Khan - Moskau 1979

►

wtf am I doing now

First Course in Probability, A
Book by Sheldon M. Ross

suks

even for a simple combinatorial identity proof he just skips lots of explanation

have to put lots of effort on it

note taking is really important

Eiffel 65 - Blue [Official Video]

►

half dead right now

HAND THING

►

dude why most of math books skips lots of skip?

sometimes it becomes misleading

this is one of the examples he skips lots of question

I already understand it but it took me 30 min to dig it lol

mine explanation might be more intutive

first remove object 1 from n then we get n-1

I will may be begin with n=5

because it is too abstract right now

we got 5 balls

ball 1,2..5

remove ball one

I am kinda lazy at explanation... give up 😂😂😂

Captain Bohemian

04:52

@NoseBleed Perhaps. Hypocrite is a pervert, but basically I feel he not only is an obscene man but also has some other moral problems.

he thinks people are obliged to serve his needs,

so he can insist to be a woman's boyfriend regardless of her objection and harasses her.

he insisted her mother should give him money; when she jilted him, he sued her.

he spends money quite fast, probably partly because he smokes very frequently.

but he can't find a job easily.

NoseBleed

@CaptainBohemian may be one day he will be homeless and learn something or it will lead him to commit a great crime

I hope u can get rid of him soon also stay away from him

Captain Bohemian

@NoseBleed Yesterday he commented on a picture I posted on Facebook, kind of perturbing me.

NoseBleed

if it gets more escalated then u call cops

change ur account name

don't let him find u

Captain Bohemian

he is in my Facebook friend list.

NoseBleed

05:07

u can block him

he can't see u

Captain Bohemian

in the past, I didn't know he is an obscene man, so accepted his friend request.

NoseBleed

can block

Captain Bohemian

I didn't know he is an obscene man until going to his home.

because he always pretends to be a gentleman when in public places.

it's very ironic he lives in a building with guard but he himself is a dangerous man who would harass women.

I have ignored his message on facebook.

NoseBleed

now it sounds more like spoiled brat

Captain Bohemian

he claimed he got mental illness because he was harassed by a male teacher in his school.

come on

few men would be harassed by men.

Arjun

05:16

@CaptainBohemian,s

This will go on

Until you hit him hard

😁

NoseBleed

it is hard to change people nowadays so be the change

Captain Bohemian

when in primary school or junior high school, bullying boys may bully boys or girls, but when in adulthood, it's generally obscene men only harass women.

NoseBleed

be defensive

@CaptainBohemian generally not true

Captain Bohemian

in universities, male dormitory buildings are opened without guards 24 hours, so anyone can enter.

while female dormitory buildings have gate control with guards 24 hours, and any male non-inhabitant needs to apply to enter.

@NoseBleed that's the manifestation that obscene men generally only harass women.

NoseBleed

05:36

then female are having more secured place lol

@CaptainBohemian well there are news that men harass men

also women harass men

woman harassing woman

obsence doesn't imply man is not gay obsence men

Captain Bohemian

I have only been harassed by men, never women.

I never see a woman likely harassing me.

@NoseBleed but men have stronger physical force than women, so they can always fight away women, if any, likely harassing them.

NoseBleed

well... everything depends

Woman knocks out man with kick?

►

XD

Captain Bohemian

05:52

but I feel it's rare a woman would harass a man because most women are not lecherous; there is a men preponderance in lechery over women.

NoseBleed

ok that was fake video

Brave girl kicks guy in the balls to defend a woman

►

found this

Captain Bohemian

@NoseBleed I wish I can be a woman like her.

NoseBleed

Everyone wish but very few does

the second video title is misleading

I think fighting skills are very useful

Captain Bohemian

@NoseBleed indeed, especially when it comes to coping with obscene men.

I am hungry now.

NoseBleed

@CaptainBohemian have a nice lunch.

Captain Bohemian

06:03

obscene men are the most despicable people I have met.

NoseBleed

need to do some programming so later ;)

Captain Bohemian

I hate them.

need to do some assignment later.

NoseBleed

may be buddha will have better answer on this than me XD

he is smartarse

Captain Bohemian

07:35

So hot.

Knight

08:02

@JohnRennie Sir putting the bed sheet on your bed/mattress is a very hard task. How do you manage it?

John Rennie

@Knight I used fitted sheets.

Knight

@JohnRennie Then how do you change them when they get dirt?

John Rennie

Well, I use a fitted sheet for the bottom sheet. The top sheet is just a regular sheet. Is making the bed that hard?

@Knight A fitted sheet has elastic round the edges that holds it to the mattress. You take it off to wash it as usual, but when you're putting it back on the elastic holds it in place and makes it very easy.

Knight

I'm not getting you, can you send an image of your bed?

I got you!

Sorry

John Rennie

Diapers :-)

Knight

08:07

LOL

Yes, they got elastics and we have to make the mattress wear that sheet

John Rennie

That shows how a fitted sheet works.

Knight

YEAH

As it is hot these days, what you use to cover yourself when sleeping?

Do you got some very think blankets?

NoseBleed

@Knight what's $\Sup()$

busy on you multivariable calculus?

John Rennie

@Knight it's not that hot in the UK. About 20°C.

Knight

@NoseBleed SUP means supremum, the maximum value of a set

@JohnRennie Oh!

I really dislike those humid weather.

NoseBleed

08:15

@Knight lol

well... that's my mathematical way to say how have u been

Knight

@NoseBleed Oh! I'm good! How are you?

NoseBleed

@Knight ctrl+c ctrl+v

Knight

ctrl doesn't work on mac, command is the key in mac

NoseBleed

windows is universal 👨‍✈️

@Knight you install windows in mac

and paint commands

make it ctrl

then here u go

Knight

@NoseBleed When last time did you go to school?

NoseBleed

08:23

@Knight I don't remember... today-5 days days and u?

why is did gates created windows? why not gate

Knight

@NoseBleed Is your school still open?

In this pandemic too?

NoseBleed

yep

but as a reminder my country is developed one not from Africa

Knight

Salute to your school, well I should have concluded this by seeing you

@NoseBleed WHAT does that mean?

NoseBleed

@Knight I don't live in developing country

Knight

But you're a very bright student

NoseBleed

08:27

0 covid 19 cases

Knight

due to lack investiagtions?

Captain Bohemian

2 new cases

NoseBleed

@Knight nooo....... way

0 cases because of tight security

BTW I always feel dumber than other lol

@Knight U r bright one too

Knight

@NoseBleed You're like my school buddies.

NoseBleed

since u r learning undergraduate courses

Knight

08:30

@CaptainBohemian Hello! Tell us about your sister

@NoseBleed How does that make us brighter?

Captain Bohemian

I feel I am smarter than others since high school.

NoseBleed

@Knight may be u r hmmmm.... brighter in RGB value

high saturation levels too

Knight

@NoseBleed How much biceps you got? (tell me in cm)

Captain Bohemian

Because I feel great sense of achievement in deriving physics since then.

NoseBleed

@Knight 2 cm 😂😂😂

nearly a string

Skinny bicep

Knight

08:33

lol

@CaptainBohemian What were your UG subjects?

NoseBleed

now I am saying width

height is 1 feet

1.5 feet approximately

haven't calculated the error bound

Knight

oh I see! you have dual nature

Captain Bohemian

@Knight physics.

Knight

@CaptainBohemian Okay

NoseBleed

how about ur biceps

in cm as metric

Knight

08:38

Probably 10cm

NoseBleed

how much weight can ur bicep handle

Captain Bohemian

But I enjoy more in graduate studies

Knight

@NoseBleed I can't keep my 4 years old niece (she got birthday today) on my one arm.

@CaptainBohemian Yeah they are more focused on research

NoseBleed

@Knight lol

do u guys smoke?

I do smoke

2 times a day at least

Knight

@NoseBleed NO

@NoseBleed As a friend, I want to say don't do it.

It's addictive

NoseBleed

08:49

I smoke 2nd hand

which means I smell other smoking actually my parents

can't avoid it

I see those beautiful multidimensional vortex street

Knight

HAHHAHAHHA

NoseBleed

Osborne Reynolds was addicted to look at it

turbulent flow

Knight

I'll see you later pal

NoseBleed

@Knight k m8

have fun

ronak jain

09:15

@JohnRennie hi):

user69608

@Knight answer is $\frac{sec(\theta)}{2}$

Leaky Nun

Since when is smoking offensive?

Captain Bohemian

@NoseBleed then you'd better keep away from your parents when they are smoking.

Hypocrite's home is also ridden with second hand smoke.I hate it.

user69608

09:45

can anyone tell which property is used in first line?

NoseBleed

@CaptainBohemian ;) yep.

Finally I got defeated and started to write notes lol

ross book is clever but it skips lots of step

fk ross

reviewing is so painful in this book after u understand and u easily forget them u need to think again

taking note is really helpful to allocate information

very bad memory we got as human

user69608

@user69608 ....?

NoseBleed

I didn't understand the question

user69608

@NoseBleed what?

NoseBleed

@user69608 first line?

I forgot lots of things from conic section

Arjun

09:53

@LeakyNun ,he's 17!

NoseBleed

;_;

user69608

OA.OC=OB.OD which property is that?

NoseBleed

I have learn that in triangle geometry don't remember a lot

;_;

Arjun

@user69608

user69608

@Arjun ?

NoseBleed

10:01

what is .

multiplication?

Arjun

@user69608, see if this helps

Theorem 3

user69608

@Arjun thanks

Arjun

@user69608 ,NP

NoseBleed

intersecting secant

@user69608 ok found it

en.m.wikipedia.org/wiki/Intersecting_secants_theorem

user69608

@NoseBleed ok thanks

NoseBleed

10:15

or u mean AA postulate

en.m.wikipedia.org/wiki/AA_postulate

I think I should upgrade my memory

how do I do that

;_;

I wish I have photographic memory

When I was younger I always learned math as I could derive it in future if world ends and now I am here as an absentminded idiot 😂😂😂

Knight

10:37

@user69608 I will check my work once again

Captain Bohemian

I would be happy if there is someone to listen to whatever I want to talk and give me useful feedback.

NoseBleed

do u guys take notes?

Knight

@CaptainBohemian of course

@LeakyNun Hello! Glad to have you here

@JohnRennie Sir is there any simulation about the motion of the Center of Mass of a triangle when it rolls.

The Center of Mass of a circular disk follows a straight path when the disk rolls, but how will the COM of triangle move?

Knight

10:56

@user69608 I made a silly mistake, when I took $2m_1m_2$ I still wrote it as -1 but it should have been +1. Now, I have corrected it, but my answer is $\frac{3\sec \theta}{2}$

user69608

11:15

@Knight if ax+by+c=0 and 2x+3y+1=0 are both same then a/2=b/3=c/1 and not a=2,b=3

user69608

11:56

which property is used in first line?

Calvin Khor

@Knight when the triangle is rotating around a vertex, the COM moves in a circular arc. When a flat side of the triangle reaches the ground, the COM starts to move in the next circular arc. THe result is something like $\cap\cap\cap\dots$

Knight

12:18

@user69608 Well $a$ can be 2 and $b$ can be 3. That’s why I wrote can in my answer.

@CalvinKhor Is that a $\sin^2$ curve?

user69608

@Knight but thats why getting wrong. and if doing by taking ratio it becomes lenghty

Knight

@user69608 Who’s getting wrong?

user69608

@Knight answer is $\frac{sec(\theta)}{2}$

Knight

@user69608 That’s your book’s answer. Book’s answer doesn’t mean a right answer

If you can find a mistake in the answer which I wrote, you’re most welcome.

user69608

@Knight this is for a particular case,and we want that which is for all cases

Knight

12:26

@user69608 All cases should agree with a particular case, isn’t it?

user69608

@Knight thats why i said its getting lenghty if doing by taking ratio

Knight

You can let people of “Mathematics” room to check my answer, ask them if what I did was not allowed.

@user69608 Not lengthy, you won’t get it by that way.

user69608

@Knight there is no mention that $2c_1c_2$ is 1.

Knight

@user69608 I never said it is 1

user69608

@Knight directly equating meant so

Knight

12:29

@user69608 Please write down the step where I assumed that, it’s hard to understand what you’re saying

user69608

@user69608 please consider doing by this

Knight

If you think my solution isn’t correct, I am ready to accept flaws in it but please let someone point out the mistake in it.

Ask someone from “Mathematics” or “Basic Mathematics” to check it.

user69608

what you are meaning is that if ax+by+c=0 and 2x+3y+1=0 are same then a=2,b=3 if and only if c is 1. but i never said c is 1.

Knight

@user69608 Well $c$ can be 1

can be

Because you said they are same

The actual condition for both of them to be same is $$\lambda (ax +by +c)= 2x +3y +1$$ and I chose $\lambda$ to be 1

Calvin Khor

@Knight no, the curve would definitely not be a $C^1$ curve

Knight

12:36

@CalvinKhor What is $C^1$?

Calvin Khor

also there are no parts of the graph of sin^2 that are circular arcs

I mean circular arcs in the precise sense of "part of a perfectly round circle"

$f\in C^1$ means $f$ is continuous, $f'$ exists, and $f'$ is also continuous

Knight

I thought COM will follow a cycloid trajectory when a triangle gonna roll over a smooth horizontal surface

Calvin Khor

what is cycloid?

the COM moves in a perfect circle until it reaches flat side hits the table

Knight

google.com/…

Calvin Khor

no, it does not move in a cycloid

it moves with perfect circular arcs

because the vertex it is rolling on does not move

so it is like you're rotating a stiff rod around a point

Knight

12:41

@CalvinKhor I thought all the vertices of triangle will move. Why a vertex need to be fixed?

Calvin Khor

When a triangle rolls, two vertices swing in the air, while one is fixed

if the vertex in contact with the ground moves, this is not rolling, this is slipping

user69608

@user69608 ...?

Knight

@CalvinKhor Yes. But isn’t the vertex which is fixed now going to move

Calvin Khor

?

at the point when the grounded vertex becomes airborne, the gradient loses continuity

Knight

Square-Wheeled Tricycle

►

Calvin Khor

12:45

this is not directly related

the ground is not flat

and there is no easy way to see the COM

Knight

Yes I agree

I think Calvin, I need to consider it more carefully.

Calvin Khor

find a square and roll it down a slope

and record it using the slo-mo of your iphone

Knight

dribbble.com/shots/4770976-Rolling-square#shot-description

Calvin Khor

sure

Knight

Vertex is not fixed to the ground

Calvin Khor

12:53

it is

it is exactly fixed to the ground as I described

at some point the flat side reaches the floor

then it becomes airborne, and another vertex is fixed to the ground

Knight

Oh yeah

Calvin Khor

there are times where two vertices touch the ground. in between two consecutive such times, every point of the square moves in circular motion

Knight

I think COM will go only up from it’s actual position (when the square was on it’s flat base), COM won’t go down from that point

Calvin Khor

that can't be true because the square's vertical motion is periodic

also, that would imply that, if you rolled a square back and forth over and over, the COM would fly to + infinity in height, which is absurd

Knight

I think you’re right, I need to analyse it more carefully. I shall discuss it after sometime, when I have analysed it properly.

Calvin Khor

12:57

or tends to some limit at least. but thats not the case

sure

Knight

Thanks

Calvin Khor

@Knight

couldn't be bothered to center it perfectly so the third vertex in the air doesn't lie on the inner circle, even though it should be

Captain Bohemian

13:30

I want to eat again.

I need food every 6 hours.

If there is an automaton serving me food every 6 hours, I would feel less trouble.

Calvin Khor

not counting sleep?

or do you sleep for ≤6 hours

Captain Bohemian

Sleeping seems not to affect my regular food demand.

I would wake up by hunger if I sleep for too long.

user69608

2

Q: If $|z|^2+\bar{A}z^2+A(\bar{z})^2+B\bar{z}+\bar{B}z+c=0$ represents a pair of intersecting lines.... find the value of |A|.

If $|z|^2+\bar{A}z^2+A(\bar{z})^2+B\bar{z}+\bar{B}z+c=0$ represents a pair of intersecting lines with angle of intersection $'\theta'$ then find the value of |A|. I tried using general equation of straight line in complex form as $a\bar{z}+\bar{a}z+b=0$ where b is real,where slope of line is $\...

@CalvinKhor hi i have some doubts from the answer can you help?

Calvin Khor

hi

what doubts, which answer

user69608

first answer. why he ommited $B\bar{z}+z\bar{B}+c$ for lines intersecting at origin

Calvin Khor

13:43

these are two lines in the complex plane?

user69608

yes

Calvin Khor

also, you shouldn't accept an answer that you do not understand

user69608

@CalvinKhor i was just asking him

unaccepted lol!

Calvin Khor

lol

well i havent tried, but i bet, if you take the equation with no $B\bar{z}+z\bar{B}+c$, and replace $z$ with $z+w$, you will see an equation of the original form, where $B$ and $c$ are some functions of $w$

$w$ an arbitary complex number, i was gonna suggest $z_0$ but that's a lot of symbols to write over and over again

NoseBleed

His Majesty the King Calvin of Malaysia. Greetings!

Calvin Khor

13:50

lol

hi and brb sry

NoseBleed

your sacred presence makes this room majestic

long live the lord

Your mere presence is filled with blessing of mine XD

Your presence makes me have faith in humanity

user69608

yeah i got it why he ommited

Letting $z=(e)^(iα/2)w$ moves the two lines into the w-plane without changing the angle of the intersection. i dont understand this line

Captain Bohemian

Eyestrain

NoseBleed

I am really too tired to teach and explain anything here lol. How do you have so much energy to teach @CalvinKhor

Though it makes u more Proficient by teaching things

I have duck to explain everything

@CaptainBohemian take a rest

Transcript for

$Mathematics$ 0