/sqt/

I meant to type 10 instead of q0, sorry.

The set of reals that can be described in english has measure zero too, but I doubt you can produce even one real number without that property.

There was already a thread you fucking faggot.
sage.

so is that it then?
can I rest easy? If I may be honest the whole ordeal started out as a bet but seeing as we couldn't solve it ourselves and he lost interest, I was left with the curiosity of whether or not it went to zero ( I bet on zero, he bet on negative infinity as there could be times where you add much smaller values and then subtract huge values )

what?
It was pretty large and I figured I'd start a new one. Sorry

If a confidence interval for the difference of two means gives (-68, 35), is it safe to say that the means might be the same?

p value (t test) gives 0.4, but I'm not sure what this means

At the very least can someone help me word my problem out, if they understand it? And maybe help me classify what kind of math it is?

I'm still a bit fuzzy on whether or not I got a solution

This question is too hard for you or probably anyone here to answer. You don't even understand that comment about indescribable numbers so you are obviously out of your depth.

i can easily produce one normal real number, and one non-normal real number; you can find some by an easy google search you scrub

I can, given a sequence, find the value.
What I lack is an ability to explain it to others...

But you're not wrong, I probably am I out of my depth. Anywhere/Anyone you reccomend I ask? Most math teachers at my school aren't helpful...

*unless that sequence is an irrational sequence...

so he's a faggot AND a retard?
fucking hell

well this made me chuckle.
Though any help would be greatly appreciated.

Math teachers at your middle school aren't going to know actual math. Try reading a book or just wait until college.

I'm in college [ Phys major and math/Cs minor ]...

Don't lie, the way you write gives away your age. Even a freshman physics major would be way beyond you at this point.

What exactly is it that gives away my age?
I'm 20 and am 3/4 done with college. I just don't know how to explain this math problem.

What do you suggest I read? And honestly, my school's physics program is shit, so I doubt any physicists here can help.

But it sure is stupid.

Is there any easy way to prove this function is a homomorphism? Or must I go through each calculation separately?

it's f(x mod 8)= x mod 4

so if you already know that x + y mod k = x mod k + y mod k then you're done

where the fuck do the 2pi() come from?

so you start with a list of numbers
[math]x_0, x_1, \cdots, \x_n
[/math]
and compute the cumulative sum of
[math]\sqrt{(x_i - x_{i-1})^2 + 1}
[/math]
and every k=10 steps you subtract a value v
[math] \sqrt{k^2+0^2}

Is this accurate?

There was a site that's related to astronomy that displayed each astral body for the night.
Anybody knows what I'm talking about?

Think it's a standard gaussian integral. When you evaluate an integral of that form with limits to infinity pi normally becomes involved. There are tables of those results on Wikipedia

How do you go from this - d/dx(tan^(-1)(x))
to this - 1/(x^2 + 1)

do i have to just remember the inverse functions of the trigonometric functions?

look up the integration formula for the second one.

What branches of math are needed to have a good understanding of both probability and statistics? I would like to understand some of the research papers that I can find on bayes theorem relating to machine learning and inference. I can understand _some_ of the texts on these topics but none of the formulas/notation. Generally I'm interested in stuff like fraud detection, text classification, event prediction etc. My math education only reaches as far as algebra though so I'm not sure if I should just pick up some books on statistics and some on probability or if I'll be missing anything.

>What branches of math are needed to have a good understanding of both probability and statistics?

Probability and statistics.

Of course if you want to be able to understand the formulas you'll need calculus, differential equations, maybe even some analysis classes to help you understand the really deep stuff.

But I think just watching through Kahn academy's basic baby math up through calc 1 and 2 and reading a few books would be a good start.

Sweet, thanks user

it follows from the chain rule that d/dx(tan^{-1}) = 1/(d/dx(tan) o tan^{-1}) but d/dx(tan) = 1+tan^2, which proves the statement

The math is way beyond me, but if you really want to know why don't you just try to find a convergence? Veeky Forums won't be able to help you, but after reading your posts three times I think I get what you're trying to do. You could try writing a program that sums the distances using the Pythagorean theorem and subtracts the length of every eleventh connection.
Sounds like you've already done some of this by hand though, so I'm not sure how to help you besides saying you should let a computer do it.

the normal numbers for which this converges make up an r.e. set, i think

Prove that [math] A \cup B \cup C = A \cap B \cap C \ \leftrightarrow A = B = C [/math]

My attempt:
Case 1: Suppse [math] x \in A [/math], then [math] x \in A \cup B \cup C [/math]. Then, by definition of equality, [math] x \in A \cap B \cap C [/math].

Case 2: Suppose [math] x \nontin A [/math], then [math] x \notin A \cap B \cap C [/math].

Case 3: Suppose [math] x \in A^c \cup B^c \cup C^c [/math], where the power of c represents the compliment. Then [math] x \in A^c \cap B^c \cap C^c [/math].

Combining the findings from the three cases, we see there is no such x that is not in A or B yet not in C (and any similar arrangment), and as such, all elements in A, B and C must be equivelent.

[math] Q.E.D [/math]

Fuck, case 2 was supposed to read [math] x \notin A [/math]

And this line:
>Combining the findings from the three cases, we see there is no such x that is not in A or B yet not in C
Was supposed to read as:
>Combining the findings from the three cases, we see there is no such x that is not in A or B yet is in C

can I borrow someone's chegg account or can you screencap this page for me? chegg.com/homework-help/questions-and-answers/1-number-distinct-partitions-set-counted-stirling-numbers-second-kind-explain-recurrence-r-q22106545

i just saw you can take the square root of a matrix. what are the other things besides numbers you can take the square root of?

actually meant the numbers for which it converges are an r.e. but not recursive set.

my guess is that if it does not converge for pi, there's no way to really tell

Can I have a look at your original question? I find it hard to understand without enough information like the number of data in the samples and how big the means of the data values.

Hi OP.

So the way to solve this problem would be to find the average path length down the lattice, and then the average path length up the lattice. Then the sum you want is given by
So=D-U+D-U+...
I don think this converges in the normal sense. But it might converge in the meme sense.
Like how 0.5=1-1+1-1+...
Try finding the ratio of the average distance down the lattice to the average distance back up! This will have an answer that is convergent.

it could still potentially converge if there's a long enough repeating pattern, but this does seem unlikely.

if you simulate this problem and it does not converge in a short period, and i'm guessing it will not, then the chance that it converges at all is pretty remote.

>left to right

A∩B = A∪B
A∪B - A∩B = {}
{x, x ∈ A or x ∈ B} - {x, x ∈ A and x ∈ B} = {}
{x, (x ∈ A or x ∈ B) and ((x ∈ A and x ∉ B) or (x ∉ A and x ∈ B))} = {}
{x, (x ∈ A and x ∉ B) or (x ∉ A and x ∈ B)} = {}

{x, (x ∈ A and x ∉ B)} = {}
{x, (x ∉ A and x ∈ B)} = {}

{x, x ∈ A} - {x, x ∈ B} = 0
A - B = 0
A = B

{x, x ∈ B} - {x, x ∈ A} = 0
B - A = 0
B = A

forgot my quote

Hey im not really that great at physics but i was looking at catenary arches like chains hanging under their own weight and I thought of a problem but idk how to solve it (i barely get the way you find the equation for a catenary). But if you have a rope and you pull it from the center with a force find the equation that models the shape of the rope? there would have to be some slack in it

How do I calculate the cumulative of a normal distribution?
I mean it's the integral of the function from negative infinity up to x, but how do I integrate it numerically? How does Excel do it?

just evaluate the error function :^)

Because the stupid questions thread reached the bump limit.

Please help a brainlet understand.

x + y = 100%

There is 49.18% more x than y. Find percentage of x. I know the answer is 74.5% and I know which numbers to plug in to get the answer but I don't get the thought process for the solution.

if your mom has $200 and you have $100 she has 100% more than you. if your dad has 49.18% more than you, you multiply $100 by (1 + 49.18%) so he has 1.4918 * $100 = $149.18.

in your problem you have two unknowns in two equations:
x + y = 100%
x = 1.4918 * y

then you solve it normally

How do you get a length of 6 by adding irrational numbers?

there are lots of numerical integration methods which work for all smooth functions

you could approximate it with a polynomial (minimax approximation) or piecewise polynomials

ALGEBRAISTS

Everything is fine, except for 4. Basically, what I'm trying to do is to show that sqrt(3) can't be in Q(a), then I'm set. How the fuck do I show that sqrt(3) can't be expressed as x + ya + ba^2, for x,y,b in Q, where a is some abstract shitroot of p in some fuckhole of a field extension?

FUCKING SHIT wrong pic

suppose I have a bachelor's degree in math or stats, what would be a good master and phd if I want to work in financial market? I mean, what subjects or area should I study or research.

square both sides

3=a^4 b^2 + etc.

use the relation a^3+a^2+1 to remove all powers of a higher than 2

this shows that a satisfies a quadratic equation with rational coefficients. this is a contradiction unless all coefficients of the equation are zero (since then the minimal polynomial of a would have degree

If hypothetically I had a spacecraft which could travel at relativistic speeds, could I use this to calculate my current speed assuming sensor and accelerator accuracy.

ty
yt

And for [math] A \cup B \cup C [/math], just add the C?

you can never use a significance test (like a t test) as evidence for the null hypothesis, no matter what the p value. this is because the p value is, by definition, the probability of a more extreme result, assuming the truth of the null hypothesis (in this case, that the two means are equal). using the p value as evidence for the null is circular reasoning, since it was computed assuming the truth of the null.

is this method wrong?

derivatives, and various kinds of differential operators

e+(6-e)

So is this actually a definitive thing now?
arc.aiaa.org/doi/10.2514/1.B36120

Hey Guys,
My chemistry teacher gave us a part of the final exam to do in home and I have the following problem:
Timmy is playing with a compound and isn’t too sure what it is. All he knows is it is an oxide, there’s a metal in the compound and is a solid. He adds it into water and it reacts. Timmy likes to sometimes drink his chemical experiments. What would Timmy need to do to make this solution safe for him to drink (what could he add to it to make it safe)? What chemical reactions (there’s two) did Timmy do and what did it make (write out a full equations of your proposed reactions and name the reactants and products)?

My idea is that if the metal oxide reacts in water, it will make a hydroxide. Now, as far as I know only metal oxides from group 1 and 2 react with water to form hydroxides. If this is true I can just ad HCl to the newly formed hydroxide and make a salt and water, right? Am I right? Will this work? Can i be sure that all Chloride salts from groups 1 and 2 will be harmless (ignoring radioactive elements of course)?

Trying to learn about Hidden Markov Models but I think I might be retarded

Is there enough information to complete B and C? How can you get the conditional probability for P(X_1 = 0 | E_1 = 0) from what's given?

Not possible, irrational + irrational = irrational always

>Not possible, irrational + irrational = irrational always
False
(2+Sqrt[2] ) + (2-Sqrt[2])
irrational + irrational = rational

just show that
A∪B = A∩B ↔ A=B
implies
A∪B∪C = A∩B∩C ↔ A=B=C

start with
A∪B = A∩B ↔ A=B
and let B = B∪C
then
A∪(B∪C)=A∩(B∪C) ↔ A=(B∪C)
using our very condition
B∪C = B∩C when B = C
it follows that
A∪B∪C = A∩B∩C ↔ A=B=C

I don't get the second bullet point.
I get why the prob that both will have the same hash is 0 if |pi - qi| > w for some i, but why don't we just say "otherwise, their hash is identical with probability 1".
Why do we need the function on the bottom ?

what does that symbol that looks like II mean? is it some kind of sum or what? supreme brainlet here

sigma is for the sum and pi is for the product

That's the product, it works like big sigma but instead of summing each individual iteration it multiplies hem

as the solution quickly notes, you need to consider the offset. Since there is an s_i at each step, what you're calculating is the probabilitxly that s_i won't shift two values to separate buckets despite them being close (note that if p_i and q_i are identical, then the probability that they will go in the same bucket is 1, as you mentionned.)

alright, it makes sense now. Thanks user

Can somebody explain in an intuitive way why multiplication by the Jacobian matrix results in a transformation of coordinates?

I see how it works in practice -- like for example transforming rectangular coordinates to polar coordinates and vice versa -- but to me it's just "magic" that multiplication by the Jacobian matrix accomplishes this transformation.

Is there some bit of insight that will show me why the Jacobian does this?

ooops, I didn't see the new /sqt/.
Please go here instead: