Did I do this right? Is the left hand = to right hand?
#help-0
woeful ridge
glacial hedge
@woeful ridge you cant cancel the 1-tan^2(x) and the 1-tan(x)
factor the 1-tan^2(x) into (1+tan(x))(1-tan(x))
then you get
(1+tan(x))/tan(x)
which is equal to 1+1/tan(x)
bronze dust
hello i wanted to ask a question regarding floor function
say floor(n/x) + floor(n/x^2) is something
wraith cairn
nice floor function
bronze dust
is it same as floor(n/x) + (floor(n/x))x
floor
my bad
i often get confused
in those two
wraith cairn
no you can't do that lol
bronze dust
no you can't do that lol
why so?
wraith cairn
I assume you meant floor(n/x)/x?
alpine sable
someone deleted their message
I did because the channel was busy
wraith cairn
try it with any number
bronze dust
okay
bronze dust
i havent been taugh many things, doesnt mean they dont exist
covert berry
you're taught about floor already
bronze dust
i want to test this thing only for x^n <= n
covert berry
you're probably solving a problem elsewhere right
and if the above thing worked, you can solve it?
assuming
bronze dust
ill cut my bullshit, you are familiar with legendre's formula? the one where you calculate exponent of prime in n!
this one
bronze dust
yes that is right
alpine sable
Two gears are attached to one another. The smaller gear X has 16 teeth while the larger gear Y has 20 teeth. When the smaller gear makes 7 turns, how many turns does the larger gear make? Record your answer to the nearest tenth of a turn. For example if the answer is 3.721, then write 3.7
the answer is 8.7 right? or am i wrong?
bronze dust
there's a whole channel for that
ill go there then i guess
covert berry
i suck at comp maths but i'll take a view too
if i have no idea i'll just offer you sweet silence
lol
the bigger gear should make less turns
20/16 = 7/x
x = 140/16 = 35/4
wait- uh
right
yeah you're right, i messed up
shouldn't the larger make less turns though
same distance travelled, larger radius uhh
nvm
alpine sable
ok
ocean sealBOT
covert berry
there, it's 28/5
wanton turtle
The quadratic formula is the direct result of the completing the square method
proud burrow
Yes it's generalized formal
shy prairie
i checked each answer choice and i swear they're all correct but i prob screwed up somewhere
woeful ridge
Is it possible to make this equation, 1-tan^2a = 2tana/tan2a? Or how would I manipulate it?
glacial hedge
@woeful ridge thats an identity....
woeful ridge
Yeah but can you manipulate it?
glacial hedge
are you allowed to use any identities?
because you would have to at least use an angle adition identity
ionic jewel
Is it possible to make this equation, 1-tan^2a = 2tana/tan2a? Or how would I man...
just multiply both sides by 1-tan^2a then divide both sides by tan2a
glacial hedge
just multiply both sides by 1-tan^2a then divide both sides by tan2a
oh xD that works too
woeful ridge
Basically trying to solve this
safe kite
What am I doing wrong why can’t I get this answer
woeful ridge
Starting on the left side
glacial hedge
@ionic jewel do you have any probability knowlege?
ionic jewel
yes but i don't like it
glacial hedge
could u help with this. i kinda suck
techincally its not probability but like an application of mvc... but i have no idea how to do this
ionic jewel
don't know this one sorry
shy prairie
I have 0 clue where to even start with this problem
glacial hedge
I have 0 clue where to even start with this problem
use d=10t
glacial hedge
not quite
native temple
What am I doing wrong why can’t I get this answer
OKay the solution is
glacial hedge
$y=10000e^(0.42d)$
$y=10000(1.5219)^d$
ocean sealBOT
Elonmosqito96
shy prairie
oh alright thx
native temple
$$ \frac{-4\pm\sqrt{24}}{2}$$
ocean sealBOT
Nerdy_Coder
native temple
@safe kite
see
also another thing
nice
so
uhhh
here's your equation
@safe kite
floral jungle
anyone able to help me with any of these?
alpine sable
what do you call a geometric sequence in which r = 1 or -1
stable vigil
native temple
what do you call a geometric sequence in which r = 1 or -1
A geometric sequence with r = 1
or An = a1+1*(n-1)
see
easy
sullen sigil
how would i solve this?
i know f(2) = 6
and that f'(2) = -132
so does that mean f(3) = 6-132?
strong furnace
this is just an ODE
sullen sigil
im currently learning calc 1, so i dont think we've gotten to ODEs yet
this is the topic on linear approximations and differentials
but the answer cant be 6-132 since mass cant be negative
strong furnace
but the answer cant be 6-132 since mass cant be negative
-132 is ROC in gram/min
gray isle
yes...
sudden tulip
Well the and is different
gray isle
wdym by
and is different
sudden tulip
the ans is 5 or -3
gray isle
that isn't part ii)
sudden tulip
yes
gray isle
seems those are the answers for part iii)
gray isle
ii) is for the area which is 1/2 * 5 * 5 (simplfied)
iii) are the values of k satisfying the specified properties
sudden tulip
the practice book must have some problems
because it clearly stated ii) answer as 5 or -3 which is weird
gray isle
does the answer provide solutions to all three parts?
gray isle
so yeh, they wrote the answers for iii) in ii)
ruby tree
Don’t spam them jeez
sullen nova
no test
rigid smelt
Please dont give out answers
ruby tree
@sullen nova I posted the answers but I think I’m supposed to walk you through it so you actually learn
ionic jewel
do you know what independent means?
ionic jewel
...
rigid smelt
Havent you been told about these rules Le Vorn?
sullen nova
again
ionic jewel
if you learned it you could answer yourself...
ruby tree
I have already learned
Then the questions shouldn’t pose any trouble for you
sullen nova
Then the questions shouldn’t pose any trouble for you
true
ionic jewel
unbelievably ironic lol
rigid smelt
Then post your answers
ruby tree
^
ionic jewel
^
rigid smelt
We will verify it for you
tough hatch
yep
sullen nova
all are indep
sullen nova
what do yall think?
tough hatch
that just goes to show that u're trying to fool us into giving us answers u likely don't actually have
ionic jewel
they are not all independent
ruby tree
Channel is occupied
sullen nova
they are not all independent
then what is it?
ionic jewel
tough hatch
then what is it?
see?
it's now obvious u want answers from us but u don't even have ur own answers to post here
sullen nova
I have my ans?
gray isle
justify your answers
sullen nova
my ans are all indep
tough hatch
then tell us your answers
sullen nova
??
tough hatch
and tell us why each is independent
sullen nova
did you read my previous message?
rigid smelt
Le Vorn, we have all the time we want, you basically arr just wasiting your time.
tough hatch
that may well just be guessing without actually explaining why
sullen nova
So what do you want from me?
tough hatch
its easy to say that they're independent without actually justifying why
sullen nova
you want me to explain the ans?
tough hatch
so we need u to tell us why each of them is independent
tough hatch
you want me to explain the ans?
this question seems like u're implying u don't even need help anymore
like it's obvious enough to u
lmao
do u know what independence means?
sullen nova
yeah
tough hatch
tell us then
sullen nova
it means they are "not related"
sullen nova
they are separate
ionic jewel
"the result of the future ones does not depend on the result of any past ones"
sullen nova
exactly
tough hatch
events are independent if they can each happen without affecting how likely the other can occur
tough hatch
think about why they would be independent/not independent
hint: events are also independent if they happen in different experiments
gray isle
go through each one carefully
and explain to use why you made your conclusions
gray isle
reasoning?
sullen nova
one sec
bc a ball was removed from the box at the first selection
in the second selection, one ball was already removed
alpine sable
I can't remember how to do this exactly but this is angular minutes so just recall the 'DMS' Formula
uh convert rads in degs
no wait
undone dock
wasmt it just 5pi radians = 2 and a half full rotations=900 degrees
and then divide by 11?
alpine sable
¯_(ツ)_/¯
An example I took off the web:
- Reduce the following numbers of radians to degrees, minutes, and seconds.
(a). 0.47623.
(b). 0.25412.
Conversely, to convert radians to degrees divide by π and multiply by 180. So, 0.47623 divided by π and multiplied by 180 gives 27.286°. You can convert the fractions of a degree to minutes and seconds as follows. Multiply the fraction by 60 to get the number of minutes. Here, 0.286 times 60 equals 17.16, so the angle could be written as 27° 17.16'. Then take any fraction of a minute that remains and multiply by 60 again to get the number of seconds. Here, 0.16 times 60 equals about 10, so the angle can also be written as 27° 17' 10".
novel zenith
thanks!
ruby tree
yk you could always plug the answers into desmos.com or something
ruby tree
Who won't?
alpine sable
just doesn't let me use the website
ruby tree
what doesn't let you? is this for a test or something?
alpine sable
it's not
it's homework
i can't go on the website on this pc for some reason
gives me an error
ruby tree
Oh, well do you have a graphing calculator?
alpine sable
nope
ocean sealBOT
tough hatch
its from wolframalpha actually
ruby tree
Yeah but I didn't know it had a wolfram command built in
I've literally had it on my own server for like, a year and a half and never knew
tough hatch
now if u transform cos(x) accordingly u can get ur function @alpine sable
tough hatch
alpine sable
can't see
tough hatch
try clicking on it
alpine sable
I have
tough hatch
screenshot what's happening and send it here
alpine sable
nothing loading
ruby tree
Sounds like you have a really weird firewall or something
tough hatch
borrowed?
ruby tree
@tough hatch He couldn't access desmos either so I bet there's some kind of blocker installed
tough hatch
that explains it
alpine sable
im not even using the browser
tough hatch
anyway do u know how to do transformations?
alpine sable
kinda
tough hatch
right
tough hatch
f(x) = acos(bx+c)+d
alpine sable
i'm just trying to submit this homework
tough hatch
where |a| is the amplitude of ur graph
alpine sable
f(x) = acos(bx+c)+d
?
tough hatch
its the general cosine function
possibly with transformations
is that borrowed from school?
alpine sable
a friend
tough hatch
u have a smartphone?
alpine sable
i just wanna get over this 1 problem
tough hatch
otherwise u won't really see any images
alpine sable
so i could continue with the others
cause waiting could take ages when i could complete other questions yknow
alpine sable
i can't that's the thing
there's 15 questions
you have to complete one to move on
tough hatch
that's harsh af
alpine sable
i can't find anyone to do this problem i'm on
i've done 11
im just stuck on 12
been on this for 30 minutes man
tough hatch
no websites work huh
tough hatch
ur friend might've been a little too paranoid
storm turret
So do you know the amplitude?
alpine sable
No.
storm turret
Basically the amplitude is the distance from the maximum to the midline
The midline is basically the line between the maximum and minimum
tough hatch
imaginary line*
storm turret
Yeah
So basically if you take the mean of maximum and minimum you get the midline
And if you take the difference between the maximum and midline you get amplitude
Since this doesn’t start on zero it’s cosine
And the period (how it cycles) is 2pi divided by the value in the cosine
Huh
tough hatch
the distance between the peak y=p and the trough y=q is |p-q| or p-q in this case
so u will get |a| from (p-q)/2
@alpine sable
the peak is y=15
trough is y=2.5
tough hatch
Since this doesn’t start on zero it’s cosine
that's not entirely true
alpine sable
This is so confusing
tough hatch
bear with us
absolute value gives distance between two points
which is why |15-2.5| gives distance between y=15 and y=2.5
storm turret
that's not entirely true
In this case it is
You can write any function as either soo
tough hatch
u could indeed write this function as either cosine or sine
but cosine would be easier to use
then |15-2.5|/2 = |a|
but since the graph curves downward from x=0, then a>0 @alpine sable
alpine sable
so 8.75
tough hatch
still nope
alpine sable
odd
alpine sable
oh 6.25
glacial hedge
@alpine sable why are u adding sin and cos together
alpine sable
<@456226577798135808> why are u adding sin and cos together
sin stays though correct?
glacial hedge
the replace the sin with the cos
alpine sable
the replace?
storm turret
Use cos not sin
glacial hedge
Use cos not sin
like get rid of the sin and cos and put the cos in the sin's old place
storm turret
like get rid of the sin and cos and put the cos in the sin's old place
Yeah
tough hatch
just put 0 next to sin.
tough hatch
like get rid of the sin and cos and put the cos in the sin's old place
that would've been multiplying two cosine functions..
tough hatch
put 0 next to sin
storm turret
Just put cos
tough hatch
in the 1st line
alpine sable
?
alpine sable
???
glacial hedge
it should be plus 8.75
alpine sable
oh alrigh
tough hatch
oh, didn't realize we just have to drag the expressions
alpine sable
might need help with another problem
sullen nova
Yoo
alpine sable
sullen nova
What is the quadratic formula
undone dock
I think they're asking another question
undone dock
What is the quadratic formula
You can just search it up
alpine sable
@undone dock you could help?
alpine sable
just search quadratic formula
lmao
does r = 1 / r = -1 diverge or converge in geometric sequences?
gentle flame
Diverge
alpine sable
how come?
undone dock
<@!436114608692920330> you could help?
I thibk it would be just -3 because it shifts the whole graph of 2cos(x/4) down by 3, and 2cos(x/4) is horizontally symmetrical
y=-3 ig?
Not really sure though
gentle flame
I've done this before
alpine sable
It's fine
gentle flame
36 * sqrt(3)
alpine sable
36 * sqrt(3)
62?
alpine sable
62.35
gentle flame
Which part is confusing you?
If r = 1, then you just add the first time over and over
gentle flame
Which part is confusing you?
If r = -1, then you alternate between the first term and 0, so it doesn't converge to a unique value
alpine sable
b?
tough hatch
well that's pretty clear from the identity tan x = sin x / cos x
if cos x = 0 then tan x is not defined at that point
fair hamlet
It isn’t horizontal though
tough hatch
why are u guessing
tough hatch
then it's not healthy to do school stuff in that state
fair hamlet
Ok, so can you give a reason as to why you think it is c?
Hint:when does 1/sin(x) =0
bleak igloo
hi i am new to math pls tell me how to calculate imperfect sqrt
just read the rules sry for disturbing
alpine sable
hey how much is 11,340+9,4100?
bleak igloo
105440?
bleak igloo
wlc
vale wigeon
..........
antanaas, if your question can be answered by a calculator, it doesn't belong here.
kame blitz, refrain from giving out answers in the future.
bleak igloo
ok
ig my question is also calc-ish, but tell me if there is a way to calculate imperfect sqrts
alpine sable
antanaas, if your question can be answered by a _calculator_, it doesn't belong ...
OK
pastel jasper
Guys dumb question: but can you take the "half life" of ln(x)? if you even can
since the graph goes to minus
or how does this work
vale wigeon
what would that even mean
pastel jasper
what would what mean
vale wigeon
"half-life of ln(x)"
pastel jasper
I mean you can take the half life of e^x
vale wigeon
half-life is a property of exponential decay.
vale wigeon
the function y = ln(x) does not describe exponential decay, not directly anyway.
pastel jasper
oh okay
vale wigeon
there is no constant h such that ln(x+h) = ln(x)/2 for all x.
(also, for exponential growth, one speaks of a 'doubling time' rather than a half-life)
rose imp
just take "or" and "ro" as one entity and solve
and dont ping helpers within 10 mins of posting the question
native temple
sigh on android/non ios software there is nothing as good as notability is their?
undone dock
I think if O and R are together, you have 5 other places places to put the other 5 leyter
sullen nova
how
undone dock
Just add 5! For every place o and R can be(togethrr) and add
Ig
Waig
Actually mo
Uh
Not really sure
sullen nova
<@&286206848099549185>
eager ginkgo
how to ping helpers while you are being helped
vale wigeon
is this $\sum_{n=1}^{\infty} y^{n/2}$?
ocean sealBOT
Ann
austere osprey
yeah
austere osprey
ok mb
vale wigeon
do what
quaint trout
We have a latex bot
vale wigeon
summon TeXit?
alpine sable
$where you can learn its language$
ocean sealBOT
Devie❄
wanton turtle
Ann gave you the hint
it's a GP
write out a few terms
try to find out the common ratio
wanton turtle
have they given the magnitude of y to be less than 1?
austere osprey
yeah actually
wanton turtle
yup then you can use that
wanton turtle
i actually made a mistake
the common ratio's magnitude should be less than 1
only then can you use the infinite GP formula
austere osprey
how would i solve it if the magnitude of y is greater than 1
wanton turtle
it doesn't depend on the magnitude of y
wanton turtle
the common ratio's magnitude should be less than 1
^^
what is the common ratio here?
austere osprey
sqrt(y)
austere osprey
how would i solve it if the magnitude of sqrt(y) is greater than 1
wanton turtle
pretty sure you can't
quaint trout
It doesn't converge then
quaint trout
So you need 0 <= y < 1
vale wigeon
ik common formula is sqrt(y)
common ratio
you're looking for the word "common ratio"
austere osprey
thanks ann
fair hamlet
Well, here is a hint: try to see how many permutations of the 9 are equivalent. That is, for any given permutation how many others is it equivalent to?
sullen nova
,w 9!
ocean sealBOT
fair hamlet
That isn’t what i asked. Let’s be more specific: how many permutations look like BBBBGGGGG
sullen nova
1 ?
native tartan
,w 9!
its the factorial of 9 right?
and @fair hamlet asked you to find the permutations of 9
sullen nova
and that's what I did
fair hamlet
Look, imagine each kid is holding a number from 1 to 9. How many permutations have the pattern i gave above
sullen nova
9!
fair hamlet
No! you can’t just put the boys and girls anywhere
Boys have to be in the first 4 slots and girls in the last 5
Do you see why there are 4!5! permutations which give us this one pattern?
fair hamlet
Ok now do you see that for every pattern there is 4!5! permutations which give that pattern?
So the number of patterns is: 9!/(4!5!)
sullen nova
ans 100800
fair hamlet
Look, the number isn’t that important, do you get the logic behind it?
ocean sealBOT
fair hamlet
How to do what?
sullen nova
this
fair hamlet
I just told you how to do the first thing. Try to use similar logic to get the rest
sullen nova
I dont ge tie i
fair hamlet
What part
sullen nova
So the number of patterns is: 9!/(4!5!)
this
fair hamlet
given a permutation, ypu can rearrange all the girls amongst themselves and all the boys amongst themselves and it won’t change the pattern of boys and girls. There are 4!5! ways of doing this for every permutation, hence the answer is 9!/4!5!
tough hatch
Boys have to be in the first 4 slots and girls in the last 5
u didnt explain why
sullen nova
u know?
tough hatch
in the first one there are 2 of a kind
so what do u do to 9!
u treat everyone else as of the same kind
sullen nova
,w P(7,7)*P(5,2)
ocean sealBOT
tough hatch
hm?
tough hatch
wdym
sullen nova
THAT'S THE ANS
tough hatch
to what item?
sullen nova
scroll up
tough hatch
(a)?
sullen nova
yes
tough hatch
thats not the answer to (a)
sullen nova
it is
tough hatch
u're asked for the permutation of having the first two people as girls
then everyone else doesn't matter
tough hatch
ok...
eager ginkgo
no it isnt
sullen nova
what
tough hatch
its ur homework so do as u please lmao
tough hatch
how would u even explain this..
eager ginkgo
we wont tell you
sullen nova
tf
tough hatch
ur choice to believe that lol
tough hatch
since u declare it's the answer then this question is closed
sullen nova
bruh
tough hatch
stating that something is a fact is believing in it
sullen nova
what is your answer?
tough hatch
better question to ask next time is "how would i solve this?"
sullen nova
no
how would you solve this?
dude, you have been telling me that my ans is wrong and giving no fuckinng clue what I did wrong
I want to know how you did it
tough hatch
because u were saying that it is the answer
sullen nova
and I'll compare it to mine
sullen nova
I fucking know it's an answer
but I don't know if it is right
if you think it is wrong
then show me
tough hatch
ok
for a) u're asked for permutation of two girls being first in line
and u have 9! ways to arrange them without categorizing them
ocean sealBOT
tough hatch
mb
if they are going to be in the first two slots of the line, u can choose them separately from the other 7 members
sullen nova
final ans?
tough hatch
there are 5P2 ways to choose the two girls assigned to the first 2 slots (choosing 2 from 5 girls)
and 7P7 ways to choose the rest of them (choosing 7 from 7, doesn't matter if they are boy or girl)
ocean sealBOT
tough hatch
for (b)
4P1 ways to choose the boy that goes in the first slot
5P1 ... girl in the last slot
7P7 ways to choose the rest
alpine sable
for c, would it just be 2!4!5! ?
alpine sable
lmao you got the same ans as mine for a)
do u hv the ans for c and d?
ocean sealBOT
sullen nova
,w 4!6!
ocean sealBOT
alpine sable
how'd u get 4!6!
sullen nova
because there are 4! ways that the boys can be arranged
and there are 6 slots for those boys to fit amongst the 5 girls
so 6!
alpine sable
ohh i see, i jus assumed the girls had to be together too for some reason
sullen nova
I am using python script to verify
alpine sable
u wrote it urself?
sullen nova
yes
ocean sealBOT
sullen nova
yes
alpine sable
ah okay
sullen nova
from math import perm, comb
import itertools
def filterperm(obj_to_perm : str, filter_func):
#obj_to_perm: takes iterable preferably string
#filter_func: takes a filtering function to filter the permutation
print("Number of Permutations: " + str(perm(len(obj_to_perm))))
res = 0
for case in itertools.permutations(obj_to_perm):
res += 1 if filter_func("".join(case)) else 0
return res
print(filterperm("history", lambda x: "or" in x))```Why are you using Python for this?
how can I do this q?
vale wigeon
a or b?
vale wigeon
if you want to split into cases according to which card is the highest then you will need to do 4C3 + 5C3 + 6C3 because the highest card is fixed
for a, the following hands are forbidden:
- anything containing the 8 or the 9
- 1234
everything else is fair game
so it's 7C4 - 1
alpine sable
ohh i see, so if 5 was the largest number, we hv one number out of the 4 and the other 3 can be chosen from 1, 2, 3, or 4
that makes sense
and for b) would it be 4C2+7C2?
nvm that's not it
i got it
narrow basalt
where should i start with learning integration?
spring harbor
Learn how to use substitution methods, then all the basic formulas, partial integration and other special substitutions like u = sinx etc.
jagged imp
substitution then basic methods is certainly an interesting way to go
spring harbor
Oh, with basic formula's I meant more of advanced ones, not the typical ones like integral of x^n etc.
jagged imp
anyway, just following like khan academy or a textbook is probably your best bet
and doing plenty of questions too
gloomy lintel
where should i start with learning integration?
Knowing how to differentiate will help massively too, they’re inverses of each other. If you can apply the chain rule, you can apply it backwards to integrate
if you can apply the product rule you can learn integration by parts
And most simply if you take the power down to the front and then take one off the power when you differentiate, you can then add one to the power and divide by the new power to integrate x^n, provided n is not -1 ofc
And then yea standard results
Like int 1/x dx = ln lxl + c
narrow basalt
I dont understand any of this stuff, I ended up getting curious about an equation I saw
I do want to be able to understand this soon though
alpine sable
Gotten to Differential Calc yet?
I mean you usually do that before Integral Calculus
gaunt coyote
@solemn juniper yo hellow
someone in chess-go told me your good in excel
would u like to help me a bit with my sheet ?
serene lily
hi :> im having a hard time trying to solve this trig problem
i tried to illustrate it this way but i dont know the value of the legs
serene lily
i tried to illustrate it this way but i dont know the value of the legs
dont mind the wrong angles i will fix that later... i just need insight on how to solve the problem :>
snow shale
Find the slope given the following
points: (2, −7) 𝑎𝑛𝑑 (3, 6).
alpine sable
How do I convert cubic meters to liters?
serene lily
How do I convert cubic meters to liters?
a cubic meter is 1000 liters; multiply the value to 1000
alpine sable
Isn't there a way to do it in fractions?
serene lily
Isn't there a way to do it in fractions?
liters to cubic meters would require you to divide by 1000, if thats what you mean
but i dont see another way to use division for cubic meters to liters
vale wigeon
i mean
you could, if you really wanted to, frame multiplication by 1000 as division by 0.001
alpine sable
In other words, I have 0.15 cubic meters, I multiply it by 1000 and I will have the value in liters?
serene lily
Find the slope given the following
points: (2, −7) 𝑎𝑛𝑑 (3, 6).
you need to use the slope equation: (y2 - y1)/(x2 - x1)
vale wigeon
In other words, I have 0.15 cubic meters, I multiply it by 1000 and I will have ...
yes
serene lily
In other words, I have 0.15 cubic meters, I multiply it by 1000 and I will have ...
yes
vale wigeon
0.15 m^3 = 150 L
alpine sable
Ok, thanks u very much
snow shale
The slope is 13
serene lily
hi :> im having a hard time trying to solve this trig problem
<@&286206848099549185>
dire iron
wich is
reasonably easy
and not like stupidly hard
also
if anyone decides to elp me, @ me
gaunt coyote
hey guys is anyone here good in excel?
i could need some help with my sheet i know how to calculate some of them but i dont know how to make the formular correct
shrewd topaz
hey can someone check with me my answer to this
snow shale
Write the equation of the line in slope
intercept form. −2𝑥 + 3𝑦 = 21
Help
torpid stump
hey can someone check with me my answer to this
y= [(x^2 /5) + cx^-3]^2 ?
shrewd topaz
dapper eagle
wooden silo
hey guys, I need an equation that uses distributive property and some fractions and has an answer of 11, if someone could help I would appreciate that
vale wigeon
,calc 8 * (11 + 9/2)
ocean sealBOT
Result:
124
yes, this equation has x=11 as its solution
sullen nova
k
give me the hardest permutation problem
I can do it no matter how hard it is
memememe
ionic jewel
<@&268886789983436800>
sly mantle
b&
ionic jewel
wait i wanted to know what he was gonna call me :(
ionic jewel
give me the hardest permutation problem
Consider all permutations of the numbers 1 to n. A good permutation is one where for any number i at position p in the permutation, i+1 is never at position p+1. For a given n, count the number of good permutations.
For example, for n = 3, the good permutations are:
1, 3, 2
2, 1, 3
3, 2, 1
Come up with a form of an answer which can be easily calculated.
not sure how hard it is but here's one to do
sullen nova
wdym ii & pp?
night geyser
permutation problem: show
[
R(r, s) \leq \binom{r+s-2}{r-1}
]
and hence
[
(1 + o(1))\frac{s}{\sqrt{2}e}2^{s/2} \leq R(s, s) \leq (1+o(1))\frac{4^{s-1}}{\sqrt{\pi s}}
]
where $R(r, s)$ is the smallest size $n$ such that any gaph of size $n$ has a clique (complete subgraph) of size $r$ or its complement has a complete subgraph of size $s$
ocean sealBOT
Namington
night geyser
good luck
sullen nova
what the hell is that?
obsidian wagon
Write the equation of the line in slope
intercept form. −2𝑥 + 3𝑦 = 21
Help
<@&268886789983436800> this was an exam question btw
violet tundra
A doozy
night geyser
and how do you know that?
fading citrus
Could you show us?
obsidian wagon
he had a screenshot and then deleted it
night geyser
what the hell is that?
an inequality on ramsey's number, this particular result is due to Erdos i think
its technically a permutation problem
tame falcon
@night geyser Message history of that user seems to agree
night geyser
for a flexible enough understanding of what that means
fading citrus
Yeah got info in dms too
serene lily
hi :> im having a hard time trying to solve this trig problem
is anyone available to help me in this problem? thanks a lot in advance :>>
worldly pagoda
Hello everyone! I need to pick up the coefficients for the model so that it maximally describe the experimental data. I wanted to solve this with the help of optimization methods, but I can not choose the target function to my nonlinear dependence. I tried to use R ^ 2 but it does not work correctly for my data - the result of the calculation does not match all this data although r2 = 0.94
sullen nova
```
Consider all permutations of the numbers 1 to n. A good permutation is one w...
No need some fancy math formula ```py
from math import perm, comb
import itertools
def filterperm(obj_to_perm : str, filter_func):
#obj_to_perm: takes iterable preferably string
#filter_func: takes a filtering function to filter the permutations
#for the amount of occurances
print("Number of Permutations: " + str(perm(len(obj_to_perm))))
occurances = 0
for case in itertools.permutations(obj_to_perm):
occurances += 1 if filter_func(case) else 0
#k = print(case) if filter_func(case) else 0
return occurances
def filter_func(x):
for i in range(len(x)):
try:
if x[i] + 1 == x[x[i]]:
return False
except IndexError:
continue
return True
print(filterperm(
[x for x in range(1, 5)],
filter_func
))
i feel this should b such an easy problem but im very confused now
ionic jewel
i suppose you could argue thats a form of the answer that "could be easily calculated"
shy prairie
think it should b 3/4
but my friend said u were supposed to multiply the values instead
ionic jewel
E or F means either E or F
sullen nova
you can brute force
sullen nova
lmao my code can support up to n = 10
ionic jewel
P(A or B) = P(A) + P(B) - P(A and B)
since they are independent, P(A and B) = P(A) times P(B)
so P(A or B) = P(A) + P(B) - P(A) * P(B)
1/2 + 1/4 - 1/2*1/4 = 3/4-1/8 = 5/8
@shy prairie
ionic jewel
no
shy prairie
idk have my rules confused
ionic jewel
thats for independent
if P(A and B) = 0 (no overlap), then P(A or B) = P(A) + P(B)
which is what you had before
but its independent, not disjoint/exclusive
sullen nova
lol m8
hollow canyon
Does anyone know what my equations would be for these systems?
wraith cairn
d+m+b=130, (do the money equation yourself), 3d=b
umbral blaze
Can anyone please tell me the general formula for the series->(1/2),(1/10),(1/30),..... ?
Needed Badly
tranquil hound
Two consecutive odd numbers are such that 7/9 of the reciprocal of one is equal to the reciprocal of the other. Find the two odd numbers.
Anyone need help for this
pulsar canopy
Two consecutive odd numbers are such that 7/9 of the reciprocal of one is equal ...
Two unknown consecutive odd numbers: 2x +1, 2x +3
7/9 x 1/2x+1 = 1 / 2x + 3
simplify further
ruby tree
how to convert my gpa?
Convert your GPA how?
sullen nova
yeah howt?
ruby tree
No, that’s not what I meant. What are you asking?
Convert your GPA could mean a lot of different things
vale wigeon
"tell me the answer to the problem i'm telepathically transmitting to you, or i will get angry if you try to tell me you're not a telepath"
ruby tree
"tell me the answer to the problem i'm telepathically transmitting to you, or i ...
Lol, I’m betting English isn’t their first language so they get a pass in my book
tame falcon
<@&286206848099549185>
Don't abuse the helper ping. Ping helpers after at least 15 minutes from posting your problem.
Also, it is good practice to add more context, and show what you've tried when asking problems.
boreal matrix
can someone help me with this thing please? I'm trying to find the math to have a nice curve between 2 points like so
wary stream
I'm go to Harvards
That's not how that works
strong furnace
this guy has been trolling since yesterday
storm turret
Colleges don’t only care about gpa
sullen nova
then what?
boreal matrix
basically I need to find the correct tangents
Not sure how though
I can make it so it's a perfect circle and then hack the ends but it doesn't look very nice
sullen nova
I can make it so it's a perfect circle and then hack the ends but it doesn't loo...
Why is there a spider nearby?
tame falcon
I'm go to Harvards
Off-topic conversations are better suited to #chill . Question channels are intended for help with problems and related discussions.
sullen nova
yeah but I initially asked for a formula to convert percentage to gpa
So I dropped a little reason why I asked the question at the last bit
Just a small story behind the question
tame falcon
That's altogether better suited to one of the discussion channels.
wary stream
Off-topic conversations are better suited to <#342850939306246145> . Question ch...
The chill channel? I thought the discussion channels were better suited for off topic discussions
tame falcon
Either works, really.
boreal matrix
even if someone could point me out to a formula i'd appreciate that, nothing I find seems helping
tame falcon
@boreal matrix Sorry for the digression. You can repost here.
boreal matrix
or maybe it's not possible?
np
I'm trying to find the math to have a nice curve between 2 points like so
sullen nova
What function is this?
wary stream
even if someone could point me out to a formula i'd appreciate that, nothing I f...
I don't think I've ever seen coordinate notation like that before, with the vertical bars, in the "points" section
Also, what's the full question? Like what exactly are you looking for?
boreal matrix
I don't think I've ever seen coordinate notation like that before, with the vert...
I'm not a mathematicians the red lines are to showcase the tangents directions
tame falcon
@graceful pier Channel occupied
graceful pier
wary stream
I'm not a mathematicians the red lines are to showcase the tangents directions
Not the red lines there
wary stream
even if someone could point me out to a formula i'd appreciate that, nothing I f...
But here, in your screenshot, top of the page where it lists the points, it uses vertical bars
boreal matrix
you mean these @wary stream ?
wary stream
you mean these <@!485903210272391178> ?
This, the coordinate notation, with vertical bars
tame falcon
@boreal matrix I'm not exactly understanding what your question is. Do you want parabolic curves between two points on a plane?
sullen nova
just use quadratic equation
wary stream
just use quadratic equation
Not exactly that easy
boreal matrix
I don't really like how it looks though, I was wandering if there was a way to keep the parable more thight at the top like the drawing
tame falcon
Okay, so if you have a regular Cartesian plane, and you want the endpoints to lie on the same horizontal line(for convenience, let it be x-axis, and coordinates of endpoints be (a,0) and (b,0)), then you can get parabolas passing through them by the equation y=-m(x-a)(x-b), where m>0.
tame falcon
I don't really like how it looks though, I was wandering if there was a way to k...
Something like the upper half of an ellipse?
boreal matrix
yeah something like that
wary stream
I don't really like how it looks though, I was wandering if there was a way to k...
Is there more to the question or just what was in the screenshot?
sullen nova
(x-h)^2 = 4p(y-k) This is parabolic equation
tame falcon
You can search up more about equation of an ellipse, and toy around till you get what you're looking for. Can you provide the context in which this problem came up?
boreal matrix
I'm creating a spline for my videogame between tho characters
I can make it look alright with some hacking but I was wandering if there was something more precise
sullen nova
(x-h)^2/a^2 + (y-k)^2/b^2 = 1 where a>b This is an elipsetic equation
tame falcon
I'm creating a spline for my videogame between tho characters
Ah, I see. I'm not familiar with the background here, but I suppose you have some coordinate system running in the background to describe motion, etc.?
tame falcon
Alright, so I suppose you want an equation describing some sort of a nice trajectory between two points?
boreal matrix
yeah
tame falcon
Like throwing a ball?
boreal matrix
yeah 🙂
tame falcon
Then you can use physics right away haha
ionic jewel
are you using one of those systems that has y as the vertical axis
with the xz plane being flat/ground
boreal matrix
z is verical in my case
ionic jewel
ah good
boreal matrix
go on @cyan willow I think I'm not clear enough on what I need anyway
boreal matrix
thanks all for the help!
wary stream
Also, this channel was busy
tame falcon
@boreal matrix If you don't mind learning some physics, this is good and might lend some intuition behind what you're trying to do: https://openstax.org/books/university-physics-volume-1/pages/4-3-projectile-motion#:~:text=h %3D v 0 y 2,component of the initial velocity.
(Also gives a lot of mathematical apparatus, although you'll have to modify it according to you needs)
boreal matrix
<@458765232911810570> If you don't mind learning some physics, this is good and ...
that's amazing, thanks!
tame falcon
No worries; goodluck!
boreal matrix
cheers
sullen nova
That's basic eom
sudden tulip
im learning this on my own
wary stream
i really need help with this question
Do you know what degree is?
tawny lion
nope
wary stream
i really need help with this question
Also, wants you to do long division with polynomials
sullen nova
division
final crest
I solved the first question,
How do I solve the first part of the second question?
sullen nova
I solved the first question,
How do I solve the first part of the second questi...
yoo
sudden tulip
i know what degree is
sullen nova
i know what degree is
tell me
sullen nova
I solved the first question,
How do I solve the first part of the second questi...
I know ur name
wary stream
i know what degree is
For that problem, do long division with polynomials
sullen nova
it's Maria
wary stream
I know ur name
Will you stop getting off topic
sullen nova
@sudden tulip What degree is it?
sudden tulip
3 ?
sullen nova
lmao