y 25 25 25 25 es 100
#help-0
surreal meadow
si
viral owl
y como en lo mio pone 100cm2 es por lo que dijiste que se trabaja con centimetros cuadrados?
surreal meadow
si
cuando tratas con area
es en unidades cuadradas
metros cuadrados, pies cuadrados etc
viral owl
man muchas gracias, te digo que estos deberes valen tanta nota porque es algo organizado por una compañia, y el que tenga todas las preguntas bien gana un premio
y en mi curso nadie participa
de verdad
he mirado los papeles de admision y NADIE participa
surreal meadow
de donde sos? me sorprende que nadia haga cosas asi
surreal meadow
yo esto lo hacia de chiquito para divertirme haha
a mira
yo estaba en argentina
surreal meadow
ajajaja
si te digo, esto lo estaba haciendo en primaria, tipo 3-4 grado
que ami me sale facil la mate
viral owl
asi vamos en españa
que en cuarto de la eso tenga que aprenderme este tema que todavia ni hemos comenzado
no se si en tu pais van igual los cursos
cuarto de secundaria
viral owl
tengo una duda rapida
surreal meadow
si dale
surreal meadow
4.5
surreal meadow
te muestro rapidito
viral owl
si
viral owl
hm
surreal meadow
nono
viral owl
3
surreal meadow
no teneces que hacer eso
viral owl
ou
surreal meadow
entonces seguimos
este es 7 tambien
por lo cual
la mitad de ese lado es 3.5
viral owl
de cual lado?
surreal meadow
y ese tambien es el centro
porque lo que acabamos de hacer
es la mitad del diametro
lo cual es el radio
viral owl
no entendi
surreal meadow
son terminos especificos al circulo
no te lo puedo explicar mucho la verdad, son cosas que se aprended
en un circulo
va
te lo muestro
el 7 es el diametro
viral owl
hm
surreal meadow
y el 3.5 es la mitad del diametro
viral owl
hm
surreal meadow
tambien se llama el radio
viral owl
ok
surreal meadow
bueno
entonces
ya que tenemos estas mitades
podemos hacer esto:
queremos saber la distancia entre los centros
esa linea rojaa
lo cual lo calculamos haciendo 11 - 3.5 - 3.5
y nos da 4
viral owl
ahhh
ostia
era mas facil de lo que creia
solo que me hago muchas vueltas
puedes ayudarme en las ultimas dos preguntas?(ni son de mates, son facilisimas, solo quiero asegurarme)
surreal meadow
dejame ver
viral owl
que figura queda despues de hacer esto?
y la otra es
Paul folds a piece of paper, then punches a hole into the paper and unfolds it again. The unfolded paper then looks like the picture below. Along which dotted line can Paul have folded the paper beforehand?
surreal meadow
esta primera es facilisima
viral owl
viral owl
surreal meadow
si
surreal meadow
no
viral owl
fuck
surreal meadow
porque pusiste esta?
viral owl
un chico me explico que para hacerlo, se necesitaban hacer unos pliegues y quedaba asi
surreal meadow
esto se llama axis of reflection
el unico axis de reflection que hay es ese diagonal en el medio
el que va de la izquierda abajo a arriba en la derecha
viral owl
comoo
surreal meadow
viral owl
no hay ninguna opcion asi
y recuerda que CREO que el chico lo que hace es hacerle una linea
a los agujeros
recuerda que hace agujeros
remote orchid
surreal meadow
mostrame las respuestas posibles
surreal meadow
ah entonces si es la D. ese razonamiento tiene sentido
va banca
puede ser la A tambien entonces
ah no
joda
es D
viral owl
vale pues se supone que ya he acabado, podemos hacer repaso por si acaso?
surreal meadow
si
woven shuttle
Helo
surreal meadow
pua
viral owl
ojala gane el premio
mira espera
osea literal compito con gente de bachillerato
(esta en catalan, un idioma tipico de catalunya)
viral owl
tambien esta el nivel 2 y 3
viral owl
ojala pudiera haber participado yo 😦 me gano todo te digo
YA JSJSJ
te llevabas todo
soy el unico que participa de mi clase pero hay gente de bach que puede ganar
surreal meadow
igual te sacaste todo bien creo
pero bue
me voy a ir a comer
suerte con lost premios
viral owl
muchas gracias
surreal meadow
😄
viral owl
como hay nivel 2 y nivel 3 mañana volvere a que alguien me ayude JAJDJJ
amber ermine
Need help with this problem, the correct answer is given, but I am unsure as to how to get it
alpine sable
no
amber ermine
Need help with this problem, the correct answer is given, but I am unsure as to ...
<@&286206848099549185> If able, please aid me with my previously posted problem. It is a Laplace transform, when I world it I am able to get two out of the three terms in the solution. I am unable to get the 4e^(-6s)/s term, since I have the other two, I do not know where my issue is
manic scaffold
alpine sable
there are 6C2 ways to pick 2 males, and 6C2 ways to pick 2 females
what do you make of that?
manic scaffold
6C2 x 6C2
alpine sable
yep
alpine sable
no problem
viral owl
@surreal meadow heyy, mañana tengo que presentarlo y seguramente tenga que debatir el porque no es 12 y es 24(lo del ejercicio)
Podrias decirme como lo habia hecho el otro chico
Y asi me informo?
hexed glacier
dumb question, but can residues cancel each other?
alpine sable
This is just a quick question i have as i was studying for a quiz on algebra. This seems dumb lol but what does ‘a’ mean in like say for example a sub n equals a sub n-1 +d (arithmetic sequence)?
hexed glacier
This is just a quick question i have as i was studying for a quiz on algebra. Th...
nth term of a is equal to the (n-1)th term of a +d
hexed glacier
no, it's just to represent the sequence
alpine sable
I mean
hexed glacier
i have sequence a
a_1 = 1
a_2 = 2
a_3 = 74625965
alpine sable
So is a like the unknown y axis in a function?
nocturne jay
Can someone help rq?
hexed glacier
more of f
nocturne jay
I have two questions I need help with
hexed glacier
where f(x) = y, where y is the actual value/output
alpine sable
A is an output?
hexed glacier
f is the function
alpine sable
What does f represent?
hexed glacier
think of a pipe between 2 containers,
f is like the pipe.
x and y are the height of the water or some measurable in each tank, respectively
alpine sable
Ohhhhhh so a is almost like”the result of this x value” equals y
hexed glacier
from 1 tank, f will map x to y(the other tank)
alpine sable
Like if it were talking lol
nocturne jay
Zyzt
alpine sable
Wait
In order to understand it better can u explain it as if
Like put what a is saying in words
hexed glacier
okay, you know what a sequence is right?
alpine sable
Yes
alpine sable
I understand how to do sequences i just wanna know what a means so I understand it better
hexed glacier
n is like the time
hexed glacier
for every n, a_n would mean a certain task
alpine sable
A just represents the specific sequence then?
hexed glacier
yes
nocturne jay
Hey
alpine sable
Ty u can help him now
nocturne jay
Pls help
hexed glacier
Im in 5th but i can help you
me?
hexed glacier
so what is the 1st thing you see?
1 semi circle and 1 rectangle right?
nocturne jay
Ur in 5th 😑, ig if you know
covert wind
I can help
nocturne jay
Correct
dire wren
use formulas
nocturne jay
8x8
dire wren
$A=lw$ for rectangle
$A=\pi r^2$ for a circle
ocean sealBOT
Bobatuzi
dire wren
since its a semicircle divide the area of circle in half
hexed glacier
$A=lw$ for rectangle
$A=\pi r^2$ for a circle
man, you type that super fast
covert wind
So just add up both areas
nocturne jay
Ummm
covert wind
@hexed glacier could you help me with a question? im an advanced 5th grader and i understand many things in algebra from 5th to 8th grade but i just cant understand this one question 13 and 14
dire wren
u say u are a 5th grader very frequently
charred flint
look at spinner B first
dire wren
..
alpine sable
One more question so my teacher put the sequence 1,3,9 on the review packet. It had a side of the paper where she wrote it in recursive formula because on that side of the packet it asked for algebraic representation. Additionally, there were separate other sequences she wrote in recursive formula. When you are doing an algebraic representation of a sequence does it always have to be from recursive formula or could you do it with explicit formula too?
charred flint
imagine the scenarios where the number is the same
(what happens on B) (what needs to happen on A)
covert wind
Ok
alpine sable
Could someone help me
Heres my question again
One more question so my teacher put the sequence 1,3,9 on the review packet. It had a side of the paper where she wrote it in recursive formula because on that side of the packet it asked for algebraic representation. Additionally, there were separate other sequences she wrote in recursive formula. When you are doing an algebraic representation of a sequence does it always have to be from recursive formula or could you do it with explicit formula too?
covert wind
put it in a different channel pls
alpine sable
Ok
hexed glacier
as Plur mentioned, look at B 1st(since it has less partitions)
covert wind
Ok
tawdry bough
you learn better if you struggle thru it
hexed glacier
to find the prob that they are the same, you can either do that, or take 1-prob(they are different)
covert wind
Ok
charred flint
@covert wind what does spinner B do when the numbers are the same?
it's kinda a trick question
covert wind
you multiply the numbers right like 1/5*1/5
charred flint
I'm doing a cooler way
fleet steeple
@charred flint is the answer 1/20?
dire wren
its not 1/20
fleet steeple
1/16+1/5
charred flint
B could do anything right?
covert wind
yeah
covert wind
yes
charred flint
what's the chance A goes on that B number?
dire wren
oh no
charred flint
yea that "but theres the number 5" doesn't matter
like say B spins on 4
chance of landing on 4 in A is 1/5
same no matter what B is
no need to worry about that A=5 case
so the answer is just 1/5
charred flint
yea 4*1/20
fleet steeple
I SEE
THAT MAKES SENSE
covert wind
That makes sense
fleet steeple
on the B one
covert wind
tysm
hexed glacier
sorry, my typing was a mess
charred flint
on that big equation above, left side is 3, right side is 3xy
fleet steeple
yuh
charred flint
for 3>= 3xy
hexed glacier
okay, let me ask my dumb qn
hexed glacier
where did they get 3xy
adding xy to both sides
hexed glacier
can residues cancel each other?
hexed glacier
er....i have a contour integral of tan(z), where the contour is a circle |c| =3
so i change it to $\frac{sin(z)}{cos(z)}$
ocean sealBOT
zyzt
hexed glacier
i just find poles in the contour
2 poles, and calculating the residues, they are of the form k and -k
would they cancel each other?
hexed glacier
i think so, res are 1, -1 i believe, from the poles
charred flint
I'm just looking up the answer, but looks like it's -1 and -1
hexed glacier
do i need to apply some multiplier to the residue at the pole?
charred flint
?
hexed glacier
i mean, if i were to draw a contour from the real line
i can't make a rectangle since the corner(origin) is a pole
charred flint
idk
fleet steeple
where do theyg et >= 2
mint swallow
night geyser
the test?
charred flint
@night geyser he's saying zyzt is posting images from a test
royal veldt
Hi, we just finished a math test, and can someone tell me how to find X? I don't know how to do this, and I flunked the test.
gray isle
apply intersecting chords theorem (or power of a point)
then solve the quadratic equation
gray isle
look it up
gray isle
2 or 3?
magic heron
3
hexed glacier
<@!105878844061286400> he's saying zyzt is posting images from a test
it's not a test proper
but it is an online set of practice questions, yes
magic heron
@gray isle sorry for ping but can u help me ?
gray isle
the question feels off
gray isle
yes
magic heron
why does it seem off
gray isle
unless i overlooked something, it can't be done
lost violet
In a room, 10 people have badges numbered from 1 to 10. Three people are chosen at random and asked to leave the room simultaneously and the numbers of their badges are noted. What is the probability that the smallest number of the badges is 5?
alpine sable
does anyone study pure math?
lost violet
me
alpine sable
can we dm?
dire wren
wdym pure math
covert wind
What is pure math?
lost violet
can we dm?
of course send me
tacit breach
pure math is math in the real world
covert wind
Oh
plucky cipher
How would I do this?
tacit breach
sohcahtoa
tacit breach
4368?
tacit breach
I think I’m overthinking...
you think to think too much you say?
sin m,
sin is opp/hyp
find M then find the opposite, then divide it by the hyp
boom
tacit breach
if im not wrong you use this
plucky cipher
Webmaster I know like I’m sounding like a lot rn but if you could like write it in some sort of form that would help
tacit breach
Webmaster I know like I’m sounding like a lot rn but if you could like write it ...
if u could send a better pic rather than 1pixel images i can help a lotmore
lol
gleaming obsidian
if im not wrong you use this
yes but im saying what did you multiply or divide
plucky cipher
So the triangles NPM right triangle snd the Hypotenuse is 13, opposite is 5, and adjacent is 12 @tacit breach
ocean sealBOT
webmaster
gleaming obsidian
ohhh
tacit breach
if im not wrong that is
plucky cipher
Yeah my teacher made it so the thing made it hells small for no reason @tacit breach but that should help you “see” it better because I deadass count zoom in anymore snd it looked like pixels so 💀
tacit breach
So the triangles NPM right triangle snd the Hypotenuse is 13, opposite is 5, and...
5/13
ocean sealBOT
JKey
$$\frac{18!}{4!(18-4)!}$$
tacit breach
Yeah my teacher made it so the thing made it hells small for no reason <@1512555...
rip
plucky cipher
So would the sin of N be 13/12?
tacit breach
plucky cipher
So how is the sin of M also 5/13?
tacit breach
idk
willow bluff
Hello I’m working on extra credit. I’m wondering if my a is right and how do I get b?
willow bluff
So it’s not Cos?
willow bluff
What about b. How would I work that out?
keen wasp
it would be cos because b is adjacent to the angle given
willow bluff
So would it be cos36 = b/25?
keen wasp
yes
pale cargo
Hello!!
How do you solve question 15 by using integration by substitution?
I can't seem to cancel out the x
<@&286206848099549185>
alpine sable
have you tried the substitution u = sqrt(x)
alpine sable
hmm either both of those should work or neither of them should
pale cargo
Rip
alpine sable
and u = 1 + sqrt(x) should be easier actually
gray isle
consider factorisation for Q15
pale cargo
In what way? I always fail to see what to factorize sadly
gray isle
x = (sqrt(x))^2
crude nacelle
Be patient :), When tackling this problem first, what two shapes create this figure
pastel sorrel
nocturne jay
No😭😭😭 were literally studying for an upcoming test
coral pagoda
If you have some way to prove it is not a quiz @nocturne jay , then someone can help.
You have 5 minutes, otherwise I'm gonna make the final decision and get the moderators involved
Lua, until we have proof, please do not answer their question
They are not active, so I'll be lenient and give them until 12 am (10 minutes from now)
pastel sorrel
I literally went out of ny way to merge 2 screenshots together... why would I answer them?!
pastel sorrel
Fair
Oof so my question on channel 2 got burried... how do I know whem it's play to repost it?
nimble frost
ok can I ask a question since this one seems like its done?
zenith fog
Was that right tho
nimble frost
Hello, I have a question. I have to find the distance between Line L:x-2=y-1=-2z-1 and plane P x+2y+6z=10
I know the distance formula, I just want to make sure I'm gathering the points correctly. would it be (2,1,-.5) and (1,2,6) respectively?
coral pagoda
I have not looked at it and am not concerned about the correct answer at this point in time
pastel sorrel
Hello, I have a question. I have to find the distance between Line L:x-2=y-1=-2z...
Got a drawing of that? My brain is farting atm and I'm not sure I can help without a diagram of some sort
nimble frost
I do not have a drawing
I feel like it would be a lot of effort for a quick problem
I just want to confirm whether the 2 points I posted fall within those respective line/planes
pastel sorrel
Hahaha well reading it again slowly, I think those are the proper points, but not 100% sure
coral pagoda
@nocturne jay five minutes left
pastel sorrel
They still offline
alpine sable
lol its literally an area question
nimble frost
and I wouldn't need to minimize the distance between the line and the plane? ie as long as that point is on the line it works for the distance formula?
alpine sable
rip old mate
pastel sorrel
Go ahead
coral pagoda
lol its literally an area question
Doesn't matter. Cheating is cheating
nocturne jay
nimble frost
pastel sorrel
You got 8.3 to prove this ain't another tab
coral pagoda
This does not reveal any correlation with the screenshot from earlier
nimble frost
are u surprised tho
coral pagoda
<@&268886789983436800> we have a suspected cheater (Biskit)
pastel sorrel
At least he doesn't have to calculate the centroid
nocturne jay
pastel sorrel
Ohh
zenith fog
lol that was funny asf
nocturne jay
8.3 homework practice has something that looks like a quiz in it
pastel sorrel
This seems more legitimate
nocturne jay
It’s not a fricking quiz
alpine sable
it literally has an input form LMAO
keen flame
pdfs don't have quiz text submission boxes?
pastel sorrel
To be fair, composite shapes is a link
zenith fog
just take a video proving its the same
pastel sorrel
Not a pdf
pastel sorrel
Ohh right
nocturne juniper
What happened
coral pagoda
Please delete
zenith fog
hm/
tame shell
zenith fog
its not even 89.12
what is it
tame shell
- do not give answers directly to problems
- it seems like there is both reasonable concern for cheating and insufficient evidence to prove it is not a quiz
so how about we just agree to not help with this individuals work
that seems like a fair compromise
narrow vector
can someone try to explain how to solve an algebra problem
alpine sable
what is it
its close to 89.12 but cant post answer
zenith fog
hmmmmmm
alpine sable
do it all in one
tame shell
enough discussion on this question
pastel sorrel
Well now that this is settle...
zenith fog
i dont get how its not that tho
narrow vector
I’m stuck on trying to find the inverse for this problem
dont want the direct answer but an explanation
dense spade
Schoology
pastel sorrel
My stupid ass forgot how to send b on the other side, to have a/b on this formula (P-y×b)/x=a
Do I factorise b?
narrow vector
right now I have the equation set up as x-4=-1/6ln(y-3)
narrow vector
im trying to figure out what to do with the -1/6
coral pagoda
i dont get how its not that tho
I have explained the solution to you personally.
narrow vector
since I know I have to move it to x-4
pastel sorrel
X-4+⅙
narrow vector
usually with whole numbers I would divide but with a fraction im thrown off right now
pastel sorrel
Divided by somethig
coral pagoda
Alright ski, let's start from square 1
narrow vector
that would be flipping the x and y from the positions
coral pagoda
In order to find the inverse, we need to switch y and x, so we will have [ x=-\frac{1}{6}\ln(y-3)+4]
ocean sealBOT
dackid
narrow vector
yes I have that down
coral pagoda
With a couple steps of algebra, we have [ 6(4-x)=\ln(y-3)]
ocean sealBOT
dackid
pastel sorrel
Ahhh shit true that
Yeah... I should go sleep... past midnight is never a good time to do maths...
coral pagoda
Now in order to undo the logarithm, we take the exponential of each side, so we have [ e^{6(4-x)}=e^{\ln(y-3)}\Rightarrow e^{6(4-x)}=y-3]
ocean sealBOT
dackid
ocean sealBOT
dackid
narrow vector
so would that be the inverse of the function
coral pagoda
It sure is $f^{-1}(x)=e^{6(4-x)}+3$
ocean sealBOT
dackid
coral pagoda
The best way to check if this is the inverse is to plug it in for f. If you get back x, then it is indeed the inverse
[ f(f^{-1}(x))=-\frac{1}{6}\ln(\left(e^{6(4-x)}+3\right)-3)+4]
ocean sealBOT
dackid
coral pagoda
It looks messy, but you'll see it is far from it
If that simplifies to x, then we have successfully found the inverse
narrow vector
this actually explained more than my time in class
just was confused on finding the inverse for this problem since the fraction threw me off
coral pagoda
In order to undo a fraction, simply just multiply by the reciprocal on each side
flat gust
How would you find the sum of a arithmetic series, ...,35,30,25,20,...
coral pagoda
Is this infinite?
flat gust
I think so
coral pagoda
Well, then the sum is simply infinity
Ah, are you wanting it in summation notation? Is that it?
coral pagoda
Can you take a picture of the question or something?
flat gust
Never mind
coral pagoda
Okee doke 🤷
south stream
What's a clean way to list permutations
coral portal
narrow vector
@coral pagoda one more question why did you change the x-4 position making it 4-x
ocean sealBOT
dackid
tiny granite
<@&286206848099549185>
viral owl
does anyone know basic biology
i do
vale tundra
,-,
vale tundra
<@&286206848099549185>
vale tundra
^^
sonic ledge
why this >= 0?
I thought if it's in the bottom, you just set it equal to 0
not >= 0
sonic ledge
you can't have zero in the denom
so how come it's written there?
vale wigeon
dunno, whoever wrote it made a mistake
jagged imp
he did it again here
The point they’re making is that the root imposes the restriction g(x)>=0, not strict ineq since you can very well put 0 into a root
Only the dividing by zero thing imposes $\sqrt[n]{g(x)} \neq 0$
ocean sealBOT
111211211111221312211
jagged imp
Angles that are “next to” each other in a parallelogram add to 180 degrees
When I say next to I mean x is “next to” y and (z-15) here for example
jagged imp
**111211211111221312211**
And this implies g(x) is not equal to 0 which combines with g(x)>=0 to give g(x)>0
sonic ledge
The point they’re making is that the root imposes the restriction g(x)>=0, not s...
ah so it means out of the context of it being a denominator, yeah?
jagged imp
Precisely
sonic ledge
i see
now
...
why is he rewriting the red?
it's a numerator!
why is he messing with it
shouldnt matter if it's zero or not, yeah?
jagged imp
But roots also impose restrictions on the domain
You can’t put negative numbers into even roots
sonic ledge
or else what?
and when you say "into roots"
you mean anything inside one of these?
jagged imp
Yes, or 4th, 6th 8th and so on roots either
Unless you wanna tell me sqrt(-1) is real
sonic ledge
oh
jagged imp
There’s no real number you can square to get a negative number, so sqrt(negative) is a Nono
sonic ledge
I thought you meant literally any sort of "-" character wasnt allowed
jagged imp
Oh lol no. You understand now?
sonic ledge
think so?
alpine sable
sonic ledge
so this?
sonic ledge
how is this equal
I wouldnt think it is
if that's what I think it is
are those matrix's?
alpine sable
yes
sonic ledge
are the C's labels? or multipliers?
alpine sable
multiplier
sonic ledge
oh!
fading zephyr
you'll have to write out how matrix multiplication works
as well as scalar multiplication and vector addition
sonic ledge
oh yeah
jagged imp
You can have sqrt(0)
sonic ledge
it can be 0 too
alpine sable
as well as scalar multiplication and vector addition
oh yeah once i wrote it out it made sense, ty!
fading zephyr
aight
dark quiver
Could someone please help explain why the potential energy is V(r1) - V(r2) I thought it would be V(r2) - V(r1) ?
alpine sable
Does anyone here study pure math?
quaint trout
No
We all study english lit
Some of us study cat theory, which you might mistake for category theory, but no: we just study cats
alpine sable
yup luna is a cat
lilac nest
Cats that study cats
alpine sable
yes
south stream
In permutations do are the choices represented as n! Or r
alpine sable
Some of us study cat theory, which you might mistake for category theory, but no...
do you what pure math is? its not studying math and only math its a math topic
polar stag
I am very confused help
jagged imp
The question references “the graph in question 5.” Not sure how we’re supposed to help without seeing the graph in question 5.
jagged imp
So x^2+2=4 is just like y=x^2+2 but with y=4, right? So, look on your graph of y=x^2+2 and see what x is when y=4.
In other words, draw a straight line out from y=4 and see when it cuts the graph
vale wigeon
y=4 is a horizontal line
polar stag
Yes
vale wigeon
so what's stopping you from graphing it
polar stag
I did that
vale wigeon
so you see how the parabola and the line intersect, right?
lilac nest
You need another equation to solve for X and y
alpine sable
Uhhh
I got that one from this one
11x + 5y = 71.25
But I simplified it to that
I was thinking that I needed to caclulate it as line interesects but idk
lilac nest
You can do X=(y-14,25)/(-2,2) and you have the solution for X in function of y
But you can't get a numerical value
alpine sable
Annoyingg
vale wigeon
@alpine sable did this come from a bigger problem?
undone copper
Consider a doublet of strength µ located at the point (b, 0) and pointing in the
positive y-direction. A circular boundary centred in the origin with radius a < b is placed
in the fluid.
does anyone know how to account for boundary in complex potential
in general would be enough
alpine sable
Hi! I got to calculate the integral of the function as on the screenshot (Lebesgue integral)
Could someone please give me a hint on how to handle it?
the $\omega \in \Omega$ if that's not clear
ocean sealBOT
wojti
alpine sable
@north jungle pls move to another channel
alpine sable
@vale wigeon yes, exactly!
vale wigeon
okay
so in more probabilistic terms
$X_n$ takes the value $n^{1/2}$ with probability $1/n$ and 0 otherwise
ocean sealBOT
Ann
vale wigeon
and you want to find $E[|X_n|]$
ocean sealBOT
Ann
alpine sable
100% correct, i should have specified it the way you did
vale wigeon
i mean first off X_n is just... nonnegative a.s. so you might as well be finding the expectation of X_n itself
which is just n^(1/2) * 1/n
alpine sable
hmmm, so the mathematica is evaluating it like this 😕
vale wigeon
what even is that output...
and most importantly why use mathematica for something that can be calculated by hand
vale wigeon
X_n is a discrete random variable which takes only two values
if you absolutely insist, i could say that i split up your integral into $$\int_0^{1/n} \sqrt{n} \dd{\omega} + \int_{1/n}^1 0 \dd{\omega}$$
ocean sealBOT
Ann
alpine sable
you assume it's discrete bc, of the indicator function which makes it non-continous?
ah I see you edit!
vale wigeon
yes and the first is the integral of a constant
alpine sable
and the first one is 1sqrt(/n)
vale wigeon
$\frac{1}{n} \cdot \sqrt{n}$
ocean sealBOT
Ann
eager pebble
chrome sierra
hello ! can anyone please help guide me on answering these problems?
quaint trout
Draw Venn diagrams
chrome sierra
Draw Venn diagrams
This is what I did for number 1.
I just minus the shared numbers together (11) from the total 35 = 24 is my answer
chrome sierra
How did you get 19? It says 15 in total right?
quaint trout
Yes, but in your diagram
chrome sierra
Ah yeah the diagram, hmm
quaint trout
You have 10+4+5, which is 19
chrome sierra
What should I do?
quaint trout
Your diagram is wrong
First enter the parts about who owns two of the three
Then check what you have to add to get the right total
chrome sierra
I added 5 between dogs and cats ,, then 4 between dogs and birds
^^ that's the said numbers they share ,, should I decrease it to fit the total?
viral owl
open channel¿
rough vigil
A Physics question. Why in this formula y=gt^2/2 the formula is divided betwen 2
What does 1/2 mean
rustic harness
A Physics question. Why in this formula y=gt^2/2 the formula is divided betwen ...
it has to do with the integration of acceleration down to position
^^
jagged imp
open channel¿
Was until it got taken lol, feel free to ask in a different free channel now
quaint trout
@rough vigil To be more explicit:
a = g
v = gt +c
y = gt^2/2 + ct +d
To get y =gt^2/2 you need the initial velocity to be 0 (which makes c = 0) and the initial position to be 0 (which makes d = 0)
chrome sierra
is this right? And so the final answer would be 13
chrome sierra
hello ! can anyone please help guide me on answering these problems?
for no.1 = there are 13 students who have none of these pets
13 students have none of all three pets*
young flume
i'm having a discussion with some people about chance to get something.
there are 8 people. all 8 roll a number between 1-99. whoever rolls the highest wins.
they say the roll doesn't have any influence on the chance of winning whatsoever. i think it does. anyone able to clarify?
covert wind
if they would say it then i would believe them
because i would just imagine it as a number generator
obsidian crane
https://cdn.discordapp.com/attachments/269573202018041856/834018704923820032/unk...
The formula for calculating the sum of interior angles is ( n − 2 ) × 180 ∘ where n is the number of sides.
90 i guess
im getting 92 btw
stark blade
290 million km is 290,000,000,000??
like its just 290 mil with 000 at the end for the thousand?
alpine sable
is 69696 actually a perfect square??
264^2=69696
stark blade
in metres
hasty quail
290,000,000
can someone vouch for me?
stark blade
i mean?
hasty quail
oh
stark blade
sorry
hasty quail
then you are right
stark blade
makes sense right
alpine sable
290 million km is 290,000,000,000??
290 million km is 290,000,000,000??
290 million km =290 000 000 kilometers
= 290 000 000 000 meters
hasty quail
is anne frank still alive??
quaint trout
,w sqrt(69696)
ocean sealBOT
hasty quail
sheesh
fiery kettle
could anybody help me find the area between f(x)= -4x^2 + 6.25x + 8 , g(x)= 2.5x + 7, and x=0?
woeful pulsar
could anybody help me find the area between f(x)= -4x^2 + 6.25x + 8 , g(x)= 2.5x...
have you sketched a diagram?
fiery kettle
my teacher lets us use desmos
south wharf
woeful pulsar
my teacher lets us use desmos
okay and you have a diagram of the area needed?
fiery kettle
yes
woeful pulsar
hmm, you might want to use LaTeX to make it clearer
$\int_0^{1.154}[(-4x^2+6.25x+8)-(2.5x+7)]dx$
glass lichen
_0^{1.154}
woeful pulsar
right now , im at 0 ∫1.154=[(-4x^2+6.25x+8)-(2.5x+7)]dx
though did you round off your 1.154?
ocean sealBOT
Element118
fiery kettle
yes
woeful pulsar
_0^{1.154}
thx
yeah don't round off in the middle
it might cause errors to propagate
fiery kettle
it’s just what my graphing calculator said as the point of intersection
the x, (1.154,9.885)
woeful pulsar
you might want to find an analytic expression for the point of intersection
paper temple
this channel free?
main quarry
Can someone help me with b)?
woeful pulsar
Can someone help me with b)?
looks like you are supposed to do some integration
main quarry
Yea
woeful pulsar
the first one should be quite straightforwards, the function is simple
main quarry
I didn't have a problem with a)
woeful pulsar
okay what's the issue with b?
main quarry
So it x^2 multiplied by the function.
I can't solve it.
I can't wrap my hand around it.
woeful pulsar
what if it was (x^2-1)+1 multiplied by the function
main quarry
If it would be like that, it would become (x-1)(x+1)+1 all multiplied by the function?
So it would be x-1 times 1/(x+1)
slate thistle
I need help constructing a circle in projective geometry. We got a task on figuring out how, but i dont know what to do
woeful pulsar
I need help constructing a circle in projective geometry. We got a task on figur...
hmm, how do you define projective geometry?
there are many projective geometries, but I'm just checking
woeful pulsar
is it 2 dimensional?
solar perch
HELLO
woeful pulsar
idk a circle isn't properly defined yet
slate thistle
If you were to guess
woeful pulsar
typically it's the set of all points with the same distance from a point
but idk if you have defined distance yet
night kayak
Can someone help me with this please?
woeful pulsar
My teacher just told the class to experiment
hmm, did your teacher mean "what happens when you project a circle from one plane to another plane?"
slate thistle
I believe so
woeful pulsar
I am completely stuck
are you supposed to physically experiment or numerically experiment
slate thistle
drawing on paper
woeful pulsar
drawing on paper
so you just draw a circle on the paper, and then use what you learnt to see what it can transform into
woeful pulsar
yeah, you place the point at a random place
wanton hill
ive been stuck on a hw question for 20 mins now
slate thistle
yeah, you place the point at a random place
thanks
woeful pulsar
try seeing what you can find out first?
woeful pulsar
i dont even know where to start
what distances can you find?
wanton hill
im assuming i already have all the information necessary to find the radius of the circle
but when i try using the formulas im familiar with, i keep reaching dead ends
woeful pulsar
what did you try?
wanton hill
re arranging formula for area of a circle
woeful pulsar
hmm, but you have neither the area nor radius