content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
The maypole braid group
Posted by: Dave Richeson | May 4, 2009
The maypole braid group
Over the weekend I attended a May Day party thrown by one of my colleagues.
During the party they had a traditional maypole dance. An example of a maypole dance is shown at left. A maypole is a tall pole with colorful ribbons att... | 4 | [
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0.050... | 2,900 | 2900 | |
Combinatorics: A Problem Oriented Approach
The unique format of this book combines features of a traditional textbook with those of a problem book. The subject matter is presented through a series of approximately 250 problems with connecting
text where appropriate, and is supplemented by some 200 additional problems f... | 5 | [
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Coma
telescopeѲptics.net ▪ ▪ ▪ ▪ ▪▪▪▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ CONTENTS
4.2. Coma
In general, coma wavefront aberration occurs either due to the incident wavefr... | 4 | [
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Bayes' Theorem
Bayes Theorem (aka, Bayes Rule)
Bayes' theorem (also known as Bayes' rule) is a useful tool for calculating conditional probabilities. Bayes' theorem can be stated as follows:
Bayes' theorem.
Let A
[1]
, A
[2]
, ... , A
[n]
be a set of mutually exclusive events that together form the sample spac... | 5 | [
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... | 2,903 | 2903 | |
Proposition 4
If a straight line is cut at random, then the square on the whole equals the sum of the squares on the segments plus twice the rectangle contained by the segments.
Let the straight line AB be cut at random at C.
I say that the square on AB equals the sum of the squares on AC and CB plus twice the recta... | 4 | [
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Nonlinear Inequalities
Express the solution using interval notation and graph. #1) $4x/2x+3>2$ #2) $x+2/x+3<x-1/x-2$ Thanks
I'll show the first, the second is too ambiguous and needs to be re-formatted: $\frac{4x}{2x + 3} > 2$. There's a number of aproaches - the simplest would be to solve $\frac{4x}{2x + 3} = 2$, loo... | 4 | [
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ssue, December 2002
English Issue, December 2002
Previous page Contents Next page ORDER FORM
Poncelet's theorem
András H... | 4 | [
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Calculus! #26: Early Transcendentals 2.7A
Derivatives and Rates of Change
Holy balls, we did it. The glorious derivative. Not only does this mean you’re about to get to some real live Calculus, it means after this section is complete I can go back to also posting on
physics stuff!
I was trying to think about the sma... | 4 | [
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A Better Lottery?
Questions are frequently asked about the odds of winning a lottery, and
it usually seems to be the same type of lottery, whether it's in the UK
or in various US states. The player selects k distinct integers from
the range 1 to N. Then the "house" randomly chooses k distinct numbers
from the same r... | 5 | [
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Generating Functions question
October 11th 2009, 12:17 PM
mathgirlie
Generating Functions question
Alright I have two problems both of which i THINK need to be done with a generating function.... any tips would really be appreciated (Rofl)
First question:
1)Find the number of solutions to the equation
... | 5 | [
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need help with an expectation question
November 10th 2009, 11:21 AM #1
hi hi
am not sure where to begin so all i need is a push in the right direction not the answer. so here's the question
find the expected number of ones when three ordinary fair dice are thrown.
i know that E(X) = xP(X=x) but the o... | 4 | [
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Working with Ratios
In this class, most of the numerical problems you will get can be treated as a ratio problem. Anytime you see words like "how much bigger", or smaller, or further away, or fainter, or hotter, or any
sort of comparison, you can be pretty sure that we have in mind you will make the comparison by tak... | 4 | [
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Zero Function
In that case, I don't think my interpretation of your question is correct. Is there any other information you can give me? i.e What topics are you working on right now, or where does the question
comes from?
My confusion comes from this phrase: "...which determine the zero function...". Determine in what... | 4 | [
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Flotation Costs and WACC - Finance Train
While raising new capital, a company incurs cost, which is paid as a fee to the investment bankers.
This fee is referred to as the flotation cost. The amount of fee depends on the size and type of offering.
Flotation cost is generally less for debt and preferred issues, and mo... | 5 | [
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... | 2,913 | 2913 | |
Dice 7 Odds Theory
November 29th 2012, 09:29 AM #1
Newbie
Joined
Nov 2012
From
Marlinton, wv
Posts
6
Dice 7 Odds Theory
Does anyone know how to graph this phenomena on a computer? I graphed with dice how many rolls occur after a 7 before another 7 occurs. I understand that this may not work with comp... | 4 | [
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How to calculate number of combinations? - Lotto Forums
How to calculate number of combinations?
... | 4 | [
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Geometry problem
September 13th 2007, 04:56 AM
jenna14
Geometry problem
In circle C - I need to find AC, AB, FE and angle DAE.
http://img529.imageshack.us/img529/2...problemfx4.jpg
I'm not sure how to solve it because I got confused by the teacher. :rolleyes:
September 13th 2007, 08:06 AM
Jhevon
... | 4 | [
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Equations Containing Radicals and Complex Numbers
PURPOSE
In this lesson you will continue to work with irrational numbers. You will also be introduced to the
imaginary number system.
OBJECTIVES
After completing this lesson, you should be ab... | 4 | [
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Intuition and Common Sense on Geometry DS Questions -
“Who cares?” That should be the operative question on your mind as you tackle Data Sufficiency problems.
Here’s what I mean: Suppose I ask you the question “What is x?” I then give you a statement that says “2,346.456 x + 87,234 = 912,347π”. Is the statement su... | 4 | [
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-0.013305664062... | 2,918 | 2918 | |
Re: st: analysing experimental panel data
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: ... | 4 | [
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Closed intervals in open sets
October 17th 2012, 06:01 PM #1
Closed intervals in open sets
Let $|U_\alpha|_{\alpha{\in}I}$ be a collection of open sets such that $[0,1]\subset{\bigcup_{\alpha{\in}I}}U_\alpha$
Prove $\exists$ a finite number of sets $U_{\alpha_{1}},...U_{\alpha_{n}}$ such that
$[0,1]\subse... | 5 | [
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Rectangle problem-probably easy
October 29th 2008, 02:39 PM #1
Newbie
Joined
Oct 2008
Posts
11
Rectangle problem-probably easy
Suppose the length of a rectangle is twice the width. If we increase both the width and length of the rectangle by 2 units, the area is increased by 34 square units. Find the wid... | 4 | [
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Retail Math problem involving quantity discount. Have answer need to know the work!
December 2nd 2008, 06:41 PM #1
Newbie
Joined
Dec 2008
Posts
1
Retail Math problem involving quantity discount. Have answer need to know the work!
ok. I don't understand the wording of the problem I guess. I know the answe... | 4 | [
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-0... | 2,922 | 2922 | |
Determinants & Matrix Inverses
December 9th 2009, 11:10 AM
BrownianMan
Determinants & Matrix Inverses
If A and B are n by n, AB = -BA, and n is odd, show that either A or B are not invertible.
Show that no 3 x 3 matrix A exists such that A^2 + I = 0.
Any help is appreciated.
December 9th 2009, 01:52 P... | 5 | [
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-0... | 2,923 | 2923 | |
Private Universe Project in Mathematics
Workshop Sessions
PROBLEMS AND POSSIBILITIES
Workshop 6: Possibilities of Real Life Problems
Watch the video:
TRANSCRIPT
Part 1. "THE 'CATWALK': REPRESENTING WHAT YOU KNOW"
NARRATOR: During a trot, do horses ever have all four hooves off the ground?
More than a century a... | 4 | [
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0.0... | 2,924 | 2924 | |
Urgent.. Set Theory!!!
May 21st 2005, 12:47 AM
zee
Urgent.. Set Theory!!!
YOUR QUESTION :
How many relations are there on {1,2,3,4,5}?
How many equivalence relations are there on {1,2,3}?
How many reflexive relations are there on {1,2,3,4,5}?
How many functions are there from {1,2,3} to {a,b,... | 5 | [
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-0.0... | 2,925 | 2925 | |
compounded continuously question
February 5th 2008, 02:34 PM #1
Junior Member
Joined
Sep 2005
Posts
62
compounded continuously question
Hi I'm trying to solve this compounded continuously question.
A bank pays interest at a rate of 10.6%, compounded continuously. How much should be invested so as to... | 4 | [
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[SOLVED] Abstract Algebra: Homomorphisms
March 16th 2008, 08:00 AM
Jhevon
[SOLVED] Abstract Algebra: Homomorphisms
Hello all,
I'd like you to check my work. I have this nagging feeling that I am missing something, or worst yet, that my proof has some error I can't see.
Problem:
(b) For which pairs... | 5 | [
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Stata
Note: This FAQ is for users of Stata 5, an older version of Stata. It is not relevant for more recent versions.
Stata 5: What is the pseudo R^2 in the weibull output?
Title Stata 5: Pseudo R^2 in weibull
Author William Sribney, StataCorp
Date March 1997
The weibull command is different from some other M... | 5 | [
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0.04345703125,
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-0.0791015625,... | 2,928 | 2928 | |
Posts about Signal and image processing on regularize
Currently I am at the SIAM Imaging conference in Hong Kong. It’s a great conference with great people at a great place. I am pretty sure that this will be the only post from here, since the
conference is quite intense. I just wanted to report on two ideas that have ... | 4 | [
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0.0230712890625,
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-0.07275390625,
-0.05810546875,
0.018798828125,
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0.0159912109375,
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0.037841796875,
-0.00445556640625,
-0.034912109375,
0.07958984375,
0.0... | 2,929 | 2929 | |
er
Member Search
Search | Watch Thread | My Post History | My Watches | User Settings
View: Flat (newest first) | Threaded | Tree
Previous Thread | Next Thread
... | 5 | [
-0.04736328125,
-0.0022430419921875,
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Chapter 1.7
half-turn T. The conjugates of reflection R[1] and half-turn T, derived by the powers of the glide reflection P, define respectively the set of reflections with equidistant reflection lines parallel
to the reflection line of R[1], and the set of rotations of the order 2, where the distance between the neigh... | 4 | [
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-0.032958... | 2,931 | 2931 | |
Solving fractions for X
March 15th 2011, 09:54 PM #1
Newbie
Joined
Mar 2011
Posts
23
Solving fractions for X
Starting to learn latex and also need to some help: I am trying to solve the equation below:
$\frac{x}{7} - \frac{1}{2} = 1 - \frac{2x}{5}$
The only thing I can think to do is start mult... | 4 | [
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stuck on integration by parts
June 28th 2010, 03:33 AM #1
Junior Member
Joined
May 2009
Posts
66
stuck on integration by parts
hello,
im stuck on an integration by parts problem:
$\int{s \times 2^s}$
here is what i have so far
$u = s$, $du = ds$
$dv = 2^{s}ds$, $v = \frac{2^{s+1}}... | 5 | [
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ation
International Journal of Mathematics and Mathematical Sciences
Volume 2009 (2009), Article ID 369482, 20 pages
doi:10.1155/2009/369482
Research Article
Heisenberg Uncertainty Relation in Quantum Liouville Equation
Gruppo di Fisica Interdisciplinare, Dipartimento di Fisica e Tecnologie Relative, Università di P... | 4 | [
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Projectiles
This is a discussion on Projectiles within the Members' Club Room forums, part of the China Defense & Military category; Ppl i need help with an engineering question: Need help with getting the
answer. A bullet is fired through a ...
Ppl i need help with an engineering question: Need help with getting the ... | 5 | [
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Grammar-combinators Tutorial
The following is a tutorial on how to use the Haskell grammar-combinators parser library.
The grammar-combinators library is a next-generation parser library which addresses the fundamental limitations inherent to current parser combinator libraries. For more info, see the project's
websit... | 4 | [
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probability of DNA sequence errors
May 8th 2012, 07:13 AM #1
Newbie
Joined
May 2012
From
Southampton UK
Posts
2
I am a molecular biologist with a probability question. Before I get to the question, I will give you a little background information about DNA. As you may know, DNA consists of two long pol... | 5 | [
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0.00... | 2,937 | 2937 | |
Math Help
October 30th 2008, 09:54 AM #1
Newbie
Joined
Sep 2008
Posts
8
Limits
hey I got this question:
Question
lim x sin1/x=0
x->0
____________
answer
-1<=sin(1/x)<=1
-x<=xsin(1/x)<=x
lim -x = 0
x->0
lim x=0
x->0
-->lim x sin(1/x)=0 //MY answer
... | 5 | [
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Items tagged with dynamics
I am trying to solve a set of equations for a Fluid dynamics problem and I cannot get a result...Any ideas why?
rho := 1.184;
nu := 1.562*10^(-5);
ID := .15;
L := 24.5;
Kl := 12.69;
Ho := 50.52;
a := 2.1*10^(-5);
E := 0.1e-2; alpha := 1.05;
sys := {Re = ID*V/nu, hl = (f*L/ID+Kl)*V^2/(2*9.81... | 4 | [
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SUMIFS function
This article describes the formula syntax and usage of the SUMIFS function (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use
functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex ... | 5 | [
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Secret Sharing Schemes
Questions to Answer
• What are Secret Sharing Schemes?
• Why do we need them?
• What are Access Structures?
• How do we define/represent them?
• What types of SSSs are there?
• How can we construct these different LSSS schemes?
1 Overview
There are times when access to a secret ne... | 4 | [
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-0.04541015625... | 2,941 | 2941 | |
more problems..
July 26th 2007, 04:46 AM #1
Newbie
Joined
Jul 2007
Posts
15
find positive integers x,y,z such that 28x+30y+31z=365
use exact calculation (no calculators or decimals allowed) to decide which is larger:
(a) 28% of 75 or 75% of 28? (b) 76% of 27 or 57% of 36?
the 1st July is... | 4 | [
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An Improved Distance Heuristic Function for Directed Software Model Checking :: Institutional Repository
An Improved Distance Heuristic Function for
Directed Software Model Checking
Neha Rungta
Department of Computer Science
Brigham Young University
Provo, UT 84601
Email: neha@cs.byu.edu
Eric G Mercer
Dep... | 4 | [
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differencial equation
Here's the second part. Dan provided the equation for V(t) It is $V(t) = V_0 e^{-0.03t}$ Now we want t such that V(t) is 25% of it's original value, in other words, we want t when $V(t) = 0.25V_0$ So
our equation becomes $0.25V_0 = V_0 e^{-0.03t}$ $\Rightarrow 0.25 = e^{-0.03t}$ $\Rightarrow t = -... | 4 | [
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Urgent Help needed!
April 9th 2006, 07:01 PM
jzon
Urgent Help needed!
Using the fact that reduction can be carried out at each stage without changing the end result, calculate 43^97(mod 98) exactly using only the capabilites of a standard pocket calculator.
April 9th 2006, 07:20 PM
ThePerfectHacker
Quote... | 5 | [
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Decimal to Binary Conversion
bogax wrote:
Do I need to explain nonrestoring division?
Sorry guys.
Guess I should have explained.
I didn't realize the term "double dabble" was so obscure. It was, like, the first
thing they taught us after they explained binary. I just kind of assumed any
one who knew binary would ... | 5 | [
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-0.0269775390625,
0.0888671... | 2,946 | 2946 | |
distance
September 1st 2007, 12:41 AM
deathtolife04
distance
i'm trying to find the distance from (2,-7) to (5,1)
i used the distance formula and got down to d=√(9+64)
9+64=73, which obviously isn't a perfect square.
9 and 64, however, ARE perfect squares
sooo, is there a way i can use 3 and... | 4 | [
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0.01... | 2,947 | 2947 | |
Dogs, Runners and the Distribution of Human Attributes
With the beauty of Piemontese ladies still fresh upon his memory, whatever good intentions La Griffe might have entertained when he sat down at the keyboard to chronicle therewith the results of his
recent musings, his attention was quickly diverted by thoughts o... | 5 | [
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-0.0153... | 2,948 | 2948 | |
Finding diagonalization of a matrix
September 25th 2012, 06:15 AM #1
Junior Member
Joined
Sep 2012
From
ohio
Posts
68
Finding diagonalization of a matrix
Thanks to all that can help. I'm given the matrix A= [-3, square root of 3] [ negative square root of 3, 1]. The question asks you to find the diag... | 5 | [
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... | 2,949 | 2949 | |
cauchy-sequenze
November 10th 2008, 07:29 AM #1
Senior Member
Joined
Nov 2008
Posts
461
cauchy-sequenze
Hello
It is $<u,v> = \int^2_0 \overline{u}(x) v(x) dx \ \ \forall u,v \in C[0,2]$ (defines a dot product)
Show that $f_n$ is a cauchy-sequenze
(field) norm: $||u||_2 = \sqrt{<u, u>} \ \ \... | 4 | [
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... | 2,950 | 2950 | |
Quadratic map
More complicated analytic quadratic map is
x[n+1] = f[c]( x[n] ) = x[n]^2 + c.
It appears e.g. in dynamics of biological populations. On complex plane it generates the famous Mandelbrot and Julia fractal sets. In spite of apparent simplicity it has very rich dynamics. For this
map regions of regular and ... | 4 | [
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... | 2,951 | 2951 | |
AS3 Matrix class matrix math
April 2nd, 2012, 05:58 AM #1
59
posts
Registered User
AS3 Matrix class matrix math
Let me make this clear first:
this has almost nothing to do with transformation matrixes, except that they follow similar patters, and thus, can be interchanged.
Alright! onto the good part:
... | 5 | [
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0.07080078125... | 2,952 | 2952 | |
Practical Optimization
March 10th 2007, 10:30 AM #1
Newbie
Joined
Oct 2006
Posts
18
A bookstore can obtain a certain book from the publisher at a cost of $3 per book. The bookstore has been offering the book at a price of $15 per copy and, at this price, has been selling 200
copies a month. The store ... | 5 | [
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The Logistic Distribution
\(\newcommand{\R}{\mathbb{R}}\) \(\newcommand{\N}{\mathbb{N}}\) \(\newcommand{\E}{\mathbb{E}}\) \(\newcommand{\P}{\mathbb{P}}\) \(\newcommand{\var}{\text{var}}\) \(\newcommand{\sd}{\text{sd}}\) \(\
newcommand{\cov}{\text{cov}}\) \(\newcommand{\cor}{\text{cor}}\) \(\newcommand{\skew}{\text{skew... | 5 | [
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-0.01782226... | 2,954 | 2954 | |
Introduction to LaTeX: 2. Typing Math
Text and math modes (review from Part 1)
TeX has three basic modes: a text mode, used for typesetting ordinary text, and two types of math modes, an ordinary math mode for math formulas set "inline", and a display math mode, used for
displayed math formulas. At any given point du... | 4 | [
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-0.049072265... | 2,955 | 2955 | |
equation
Moderator
Registered: 2005-12-04
Posts: 3,791
Re: equation
Real Member
Registered: 2005-12-02
Posts: 1,908
Re: equation
Sorry Ricky. But Sarah can still answer the question and can verify it with mine.
IPBLE: Increasing Performance By Lowering Expectations.
Member
Register... | 4 | [
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0.0306396484375,
0.0206298828125,
-0.01531982421875,
-0.0029144287109375,
0.12109375,
-0.054931640625,
0.03857421875,
-0.031494140625,
-0.007476806640625,
0.111328125,
-0.0170898... | 2,956 | 2956 | |
Matrices!
January 18th 2013, 07:18 AM #1
Member
Joined
Nov 2012
From
Singapore
Posts
180
Matrices!
How do I do
If A = $\begin{bmatrix} 3 & 2 \\-2 & -1 \end{bmatrix}$, write A^2 in the form pA+qI where p and q are scalars?
How do I convert a square matrix to _A+_I?
Really need help, tha... | 4 | [
-0.06396484375,
0.005157470703125,
-0.0283203125,
-0.036865234375,
-0.057861328125,
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0.009765625,
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0.040283203125,
0.1015625,
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0.0211181640625,
0.044189453125,
-0.0537109375,
0.0341796875,
-0.033203125,
0.04345703... | 2,957 | 2957 | |
Show that matrix is diagonal
December 3rd 2009, 09:29 PM #1
Show that matrix is diagonal
Problem: Show that if a matrix $\textbf{A}$ is both triangular and unitary, then it is diagonal.
-------------------------------------
My attempt at a solution:
Since $\textbf{A}$ is unitary, $\textbf{A}^*=\textb... | 4 | [
-0.1044921875,
0.027099609375,
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0.037353515625,
-0.0208740234375,
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0.0208740234375,
0.0703125,
0.0075... | 2,958 | 2958 | |
numpy.fft.ihfft
numpy.fft.ihfft¶
numpy.fft.ihfft(a, n=None, axis=-1)[source]¶
Compute the inverse FFT of a signal which has Hermitian symmetry.
a : array_like
Input array.
n : int, optional
Parameters
: Length of the inverse FFT. Number of p... | 5 | [
-0.060791015625,
-0.008544921875,
-0.0301513671875,
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-0.07080078125,
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-0.01953125,
-0.039306640625,
-0.06689... | 2,959 | 2959 | |
Splish, Splash, I Was Takin' a Drink...
08-19-2003, 15:24 #1
Splish, Splash, I Was Takin\' a Drink...
Any Bobby Darrin fans out there?
Actually this is about a different kind of splash, namely that "splash" that we all refer to from time to time when we add water to our bourbon before drinking it.
Today... | 4 | [
-0.0712890625,
-0.027587890625,
0.048828125,
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0.052490234375,
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0.037841796875,
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0.0303955078... | 2,960 | 2960 | |
Laplace Transforms
For any given function f(t) (assumed to equal zero for t less than zero) we can define another function F(s) by the definite integral
[]
The function F(s) is called the Laplace transform of the functi... | 4 | [
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0.00885009765625... | 2,961 | 2961 | |
Lipschitz Continuity
February 22nd 2010, 02:29 AM #1
Member
Joined
Nov 2009
Posts
169
Lipschitz Continuity
Hey guys, I need to do the following.
Let $c > 0$ and let $f(x) = e^x$. Show that $f(x)$ is Lipschitz continuous for $x \in [-c,c]$.
My idea is to set $L = e^c$, but it is hard to prove th... | 4 | [
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-0.04101562... | 2,962 | 2962 | |
polynomial
April 27th 2010, 06:03 AM
apple2009
polynomial
For each divisor m of 6, give an example of a polynomial p(x) in Q[x], such that the splitting field E of p(x) over Q has m, ie [E:Q]=m
April 27th 2010, 07:09 PM
FancyMouse
for m=3 you have to use some cubic polynomial whose determinant is a square... | 5 | [
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0.07275390625,
-0.0854492187... | 2,963 | 2963 | |
Self-adjoint linear transformations and eigenvalues.
June 9th 2012, 02:12 AM #1
Newbie
Joined
Sep 2011
Posts
11
Self-adjoint linear transformations and eigenvalues.
Hi all, I was studying for a Math test until this question stumped me:
Let $V$ be an inner product space and $T : V \rightarrow V$ be a... | 5 | [
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-0.0678710... | 2,964 | 2964 | |
differentiation
I need help with the following derivatives y= (e^1/x) / x^2 f(t) = t ln(5t) thanks for your help
Could you show us what exactly is giving you trouble? What do you get when you attempt them?
Using the rules you suggested i got dy/dx = ((x^2)(e^1/x) - (e^1/x)(2x)) / x^4 f ' (t) = (1/5t) (t) are they cor... | 5 | [
0.01153564453125,
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0.035400390625,
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0.030029296875,
-0.0390625,
-0.0344... | 2,965 | 2965 | |
Help with non-linear least squares
February 24th 2011, 05:56 AM #1
Newbie
Joined
Aug 2010
Posts
8
Help with non-linear least squares
I'm trying to find least squares coefficients using the Gauss-Newton method (using scilab as my numerical analysis software)
Given the following data vectors:
x =... | 5 | [
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0.0859375,
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... | 2,966 | 2966 | |
confusions
October 2005
Common confusions
I often get letters and emails from people asking me to clear up a confusion with some mathematical issue. Sometimes the confusion is occasioned by something I've written in a book or article or said
on the radio, other times the question is sparked by something having nothin... | 5 | [
-0.03125,
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0.015625,
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-0.1181640625,
-0.022949... | 2,967 | 2967 | |
arithmatic sequence question and find the term.
January 22nd 2008, 06:57 PM #1
Newbie
Joined
Oct 2007
Posts
8
arithmatic sequence question and find the term.
Alright, so first question is: Felicity starts a new job with a salary of 16000 per year. She receives a raise of 850 each year with this company. ... | 4 | [
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-0.... | 2,968 | 2968 | |
Quadratic Forms
May 15th 2010, 10:43 PM
demode
Quadratic Forms
http://img695.imageshack.us/img695/843/73734670.gif
What does it mean to write Q as a function of $x_1$ and $x_2$? Is the following what they are asking for:
$Q(x) = (x_1 x_2) \begin{pmatrix}4 & 3 \\ 3 & 5 \end{pmatrix} \begin{pmatrix} x_1\... | 4 | [
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0.14453125,
-0.060791015625,
-0.00527954101562... | 2,969 | 2969 | |
Homework Help
Posted by Gabby on Wednesday, February 5, 2014 at 1:06pm.
Plz help me with the following problems.
Simplify. 5^-1(3^-2)
Simplify. mn^-4/p^0q^-2
Write a scientific notation. 0.0042
Write in standard notation. 6.12*10^3
Simplify. Write in scientific notation. 0.5(8 * 10^5)
Simplify. Write in scientif... | 4 | [
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0.08251953125,
0.033447265625,
0.11767578125,
-0.0888671875,
-0.0751953125... | 2,970 | 2970 | |
Basic Square Root Help
This is going to be a problem in two steps. The base example here is how to solve the following for z: $\sqrt{z + 1} + 2 = 3$ The general rule is to isolate the square root, then square both sides.
In your problem we need to do this twice. So $3 + \sqrt{z-6} = \sqrt{z+9}$ One square root is alrea... | 4 | [
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0.047607421875,
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0.0693359375,
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0.00848388671875,
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-0.05322265625,
-0.123046875,
... | 2,971 | 2971 | |
Is the strict transform a finite morphism?
up vote 3 down vote favorite
1
Woe is me! I'm again resorting to this forum to ask a silly question.
Here is the example I had in mind: observe the (complex) curve $y^3=x^2(x-1)$. In attempt to normalize this curve, I've begun by blowing it up once at the origin. Of the two ... | 4 | [
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-0.05029296875,
-0.0230... | 2,972 | 2972 | |
Induction problem
Hey, I need to proove by Induction that k^3+3k^2+2k devided by 6 without residue. thanks omri
you can actually check that $k^3+3k^2+2k = k(k+1)(k+2)$ and for any natural number k, one of them is even, and one is divisible by 3. thus, it must be divisible by 6. by induction: for k=1: 1 + 3 + 2
= 6 sup... | 5 | [
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0.... | 2,973 | 2973 | |
Expectation & Conditional Expectation
January 23rd 2009, 12:47 PM
kingwinner
Expectation & Conditional Expectation
1) "Let g be any function of the random variable X.
Then the expected value E[g(X)|X]=g(X)"
I don't understand why. I tried to use the definition of conditional expectation to prove it, but... | 5 | [
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0.027099609375,
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0.107421875,
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0.054931640625,
-0.06689453125,... | 2,974 | 2974 | |
prime factorisation
September 5th 2009, 11:21 AM #1
Newbie
Joined
Sep 2009
Posts
11
prime factorisation
Hi everyone,
I am about to start a computing course at a university. One of the 'modules' will obviously be mathematics. I'm not worried about the computing side of my studies. It's my maths that w... | 4 | [
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... | 2,975 | 2975 | |
Initial Value Problem
y'''' + 2y'' + y = 3t + 4, y(0)= y'(0) = 0, y''(0) = y'''(0)=1
The charachteristic equation is, $k^4 + 2k^2 + 1 = 0 \implies (k^2 + 1)^2 = 0 \implies (k-i)^2(k+i)^2=0$ Because the roots have multiplicity it means the general solution is, $y = c_1\sin (t) + c_2 \
cos (t) + c_3 t\sin (t) + c_4 t\co... | 5 | [
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0.036865234375,
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0.06982421875,
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-0.0035858154296875,
-0.024169921875,
-0.056640625,
-0.02490234375,
-0.05786132... | 2,976 | 2976 | |
IGEM:IMPERIAL/2006/project/Oscillator/project browser/Test Killing Predator Construct/Modelling
From OpenWetWare
┌───────────┬─────────────────────────────────────────────────────────────────────────────────────────────┐
│Super Parts│ Predator Construct ... | 4 | [
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0.083984375,
0.0047607421875,
-0.031982421875... | 2,977 | 2977 | |
Rearrange
September 25th 2007, 09:44 PM
taurus
Rearrange
Hi jus a little help. Good someone show me the steps for rearranging the following equation in terms of 'u' please:
164 = u + 8 - 0.5 * 0.5 * (8^2)
?
September 25th 2007, 09:49 PM
janvdl
Quote:
Let's simplify a bit first...
$164... | 4 | [
0.01025390625,
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0.03564453125,
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0.00909423828125,
-0.09619140625,
0.026... | 2,978 | 2978 | |
Volume of a sphere
January 23rd 2010, 11:22 AM
Intrusion
Volume of a sphere
The volume of a sphere is proportional to the cube of its radius. Sphere A has volume V and radius R. The radius of Sphere B is twice the radius of Sphere A. Find the volume of Sphere B.
How would I go about doing this? Would the fo... | 4 | [
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0.01055908203125,
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0.0291748046875,
0.07275390625,
0.048583984375,
-0.000728607177734375,
0.02... | 2,979 | 2979 | |
Parameterized Knots
<< Previous || Contents || Next >>
by Lee Stemkoski (Adelphi University)
Trigonometric Knots
A trigonometric knot is a knot as defined in the introduction, with the additional condition that in the function \( f(t) = \langle \, x(t), \, y(t), \, z(t) \, \rangle \), the coordinate functions \
( x... | 4 | [
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0.04296875,
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0.03271484375,
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-0.1025390625,
0.027954101562... | 2,980 | 2980 | |
Proof that 1 = 2
May 5th 2009, 11:56 PM #1
Newbie
Joined
Mar 2009
Posts
23
Proof that 1 = 2
This is a silly proof that my thirteen-year old cousin showed me the other day. I'm ashamed to admit that it took me a full ten minutes to figure it out.
Let a = 1
Let b = 1
therefore:
a = b
... | 4 | [
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0.020629882812... | 2,981 | 2981 | |
A group of Republicans and Democrats was surveyed and each
Author Message
TAGS:
A group of Republicans and Democrats was surveyed and each [#permalink] 25 Feb 2013, 01:14
... | 4 | [
0.0018463134765625,
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0.091796875,
0.031494140625,
... | 2,982 | 2982 | |
Prove or disprove help
March 27th 2008, 06:29 PM
jconfer
Prove or disprove help
I can't firgure out how to show that this prove or disprove problem is false:
Prove or disprove that there exists a real number x such that x^2 + x + 1 ≤ 0.
As i said i know the problem is false for every number. I just don... | 4 | [
-0.041748046875,
0.04931640625,
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0.1337890625,
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-0.023681640625,
0.053466796875,
-0.072753906... | 2,983 | 2983 | |
MathGroup Archive: September 2006 [00787]
[Date Index] [Thread Index] [Author Index]
Re: Program to calculate rational function with imbedded continued fraction
• To: mathgroup at smc.vnet.net
• Subject: [mg69957] Re: Program to calcula... | 5 | [
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... | 2,984 | 2984 | |
A question about y=sin(n)
April 21st 2010, 07:19 AM #1
Newbie
Joined
Apr 2010
Posts
4
A question about y=sin(n)
$y=sin(n) n \in \mathbb{N_+}$ ,then y can reach any number in [-1,1]
may i have a proof?
i just be very curious why it is ture and it's not my exam ,if the proof is too long ,please giv... | 4 | [
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Help me with these problems...
Re: Help me with these problems...
Re: Help me with these problems...
4. There are 366 days in a leap year. That's 52 full weeks plus 2 extra days. If the year starts on a Sunday, there's going to be 52 full weeks of Sunday through Saturday, plus an extra Sunday and a
Monday. Likewise, ... | 4 | [
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Logarithm numbers
June 5th 2010, 07:27 PM #1
Newbie
Joined
Jun 2010
Posts
9
Logarithm numbers
Thanks a lot for all your help in advance.
If $\log_{10} (n+1) - \log_{10} n < \log_{10} 1.01$ find the smallest positive integral value for n.
$\log_{10}{(n + 1)} - \log_{10}{n} < \log_{10}{1.01}$
... | 4 | [
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MathGroup Archive: March 2004 [00326]
[Date Index] [Thread Index] [Author Index]
RE: RE: Re: doing things on a procedural way and doing them on a functional way
• To: mathgroup at smc.vnet.net
• Subject: [mg47010] RE: [mg46991] RE: [mg4... | 5 | [
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Problem 9
Suppose a coffee shop owner has a balance beam scale which balances equal weights on each side. She is deciding what standard weights to buy to use the balance to weigh coffee. For example if she
bought 2 weights, a 1-ounce weight and a 3-ounce weight, she could weigh out 1,2,3, or 4 ounces of coffee. One ... | 5 | [
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... | 2,989 | 2989 | |
find the cube roots
December 11th 2008, 02:45 PM
robasc
find the cube roots
I am learning how to find cube roots of a complex number and I wanted to see if I am doing this right. could someone let me know?
find the cube roots of -8i:
$<br /> 8(cos (3\pi/2)+ i sin(3\pi/2))<br />$
$<br /> (8)^1/3[co... | 5 | [
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... | 2,990 | 2990 | |
Three similar limit problems
May 18th 2008, 08:55 AM #1
Three similar limit problems
Hey guys!
I have 3 similar problems, if someone could please show me how to do one of them that would be great!
They all involve finding $\lim_{n\rightarrow\infty}$ of $a_{n}$, when $a_{n}$ isn't given.
1.) $a_{1}=0,... | 5 | [
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Calculus Graph Help - Interpretation
March 10th 2013, 03:09 AM #1
Newbie
Joined
Sep 2012
From
South Africa
Posts
7
Calculus Graph Help - Interpretation
Please see link below:
http://oi48.tinypic.com/flgfpy.jpg
I know how to get 3.1. a & b but not c and d.
I also need help with questions... | 4 | [
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Diminishing Returns - Math! [Archive] - TankSpot
Satrina
10-05-2007, 09:31 PM
Introduction
Here we deal with mitigation due to armour using some Calculus to show its properties.
We begin with the basic formula for physical damage mitigation from armour for opponents level 60 and higher:
Armour
M = ---------------... | 4 | [
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EQUIVALENCE RULES
(Rules of Replacement)
Whenever the truth table columns for the dominant operators in a pair of formulas are identical, t... | 5 | [
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Surjective functions
November 3rd 2009, 02:18 PM
l888l888l888
Surjective functions
let f: From A to B. let g: From B to A.
How do I prove f(g(x)) = x (indentity function) implies f is onto (surjective).
November 4th 2009, 02:23 AM
HallsofIvy
November 4th 2009, 06:53 AM
l888l888l888
f(g(y))= y becaus... | 5 | [
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Math Help
Given that $x = sec\theta + tan\theta$ show that $\frac{1}{x} = sec\theta - tan\theta$
Just been thinking, is this method correct? $x = sec\theta + tan\theta$ $\frac{1}{x} = sec\theta - tan\theta$ $\frac{1}{sec\theta+tan\theta} = sec\theta - tan\theta$ multiply both sides by $sec\
theta+tan\theta$ $1 = ( se... | 4 | [
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Real Analysis
Ratio Test
Consider the series
• if lim sup | a [n+1] / a [n] | < 1 then the series converges absolutely.
• if there exists an N such that | a [n+1] / a [n] | for all n > N then the series diverges.
• if lim sup | a [n+1] / a [n] | = 1, this test gives no information
Note that the second con... | 4 | [
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8 bags from the first shop
March 31st 2012, 12:18 PM
kingman
8 bags from the first shop
I need help in the below problem
Thanks
Jack bought 8 bags from the first shop then, he bought three more identical bags at $42.50 each from the second shop. The average cost of all his bags was decreased by $1.50.wh... | 4 | [
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Proof: Formula connecting GCD and LCM for 3 integers
October 22nd 2009, 06:52 AM #1
Junior Member
Joined
Oct 2008
Posts
54
Hi, I need some help proving that the below formula is true.
It says: Use the Fundamental Theorem of Arithmetic to prove the following formula connecting GCD and LCM for three in... | 5 | [
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