content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
I need help!!!!!
July 29th 2008, 02:16 PM
uabmedic
I need help!!!!!
I am stuck on a question. I know the answer is 280 but I dont know how to put it into Algebra form. Any help is appreciated.
How many pounds of hamburger that costs $1.60 per pound must be mixed with 70 pounds of hamburger that costs $2.10 ... | 4 | [
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0.072265625,
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0.0301513671875,
0.0174560546875,
-0.01525... | 10,000 | 10000 | |
Normal
Answers: The Normal Curve
Back to Problems
1. Suppose SAT scores are normally distributed with a mean of 1000 and a standard deviation of 100.
a) What percentage will be between 900 and 1100?
b) What percentage of... | 5 | [
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-0.15527343... | 10,001 | 10001 | |
Minimise Radius- With a Nasty Twist.
January 15th 2008, 04:30 AM #1
Minimise Radius- With a Nasty Twist.
Q: A lattice point in the plane is a point with integer co-ordinates. Suppose that circles with radius r have lattice points as centres. Find the smallest r such that any line with gradient 2/5
intersects ... | 5 | [
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0.040771484375,
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Herstein: Subrings and Ideals
November 14th 2011, 12:35 PM
ThatPinkSock
Herstein: Subrings and Ideals
Herstein's Abstract Algebra: Ch 4. Sect 3. # 5.
If I is an ideal of R and A is a subring of R, show that I ∩ A is an ideal of A
November 14th 2011, 02:34 PM
TheEmptySet
Re: Herstein: Subrings and Ideals
... | 5 | [
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Normalizatoin Constant and a Gaussian Integral.
October 21st 2011, 01:59 PM
atomicpedals
Normalizatoin Constant and a Gaussian Integral.
Hello! I'm attempting to compute the normalization constant N for the following function $f(x)=N e^{-(x-x_0)/2k^{2})}$. This is generally done by evaluating $\int |f(x)|^{2}dx=... | 5 | [
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Estimating genomic breeding values and detecting QTL using univariate and bivariate models
Abstract
Background
Genomic selection is particularly beneficial for difficult or expensive to measure traits. Since multi-trait selection is an important tool to deal with such cases, an important question is what the
added va... | 4 | [
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Energy of Bird Flight
From ChemPRIME
Have you ever noticed that when birds land on a branch, they usually fly in at a low level and swoop up to the branch?
If they didn't do that, they would have to absorb all the energy of their flight with their legs (and strong wing action). But by flying upward, their kinetic e... | 4 | [
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0.0937... | 10,006 | 10006 | |
Square Roots and Limits
Date: 03/12/2003 at 21:39:19
From: Jonathan Coveney
Subject: Square Roots
Given a value of x, find the value of the expression sqrt(x sqrt(x
sqrt(x... and so on, and explain why.
Date: 03/13/2003 at 03:41:32
From: Doctor Ian
Subject: Re: Square Roots
Hi Jonathan,
The easiest way to deal wi... | 4 | [
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Author adam smith
10 definitions by adam smith
The study of choice in the face of scarcity.
Ignorant people who post idiotic definitions have scarce resources.
When yay just wont cut it
.....finding 50p in a public toilet
A mathematical rule useful for finding the derivative or instantaneous rate of change of a fu... | 4 | [
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0.03613... | 10,008 | 10008 | |
[SOLVED] find analytic continuation
May 13th 2010, 05:21 PM #1
Junior Member
Joined
Dec 2009
Posts
48
[SOLVED] find analytic continuation
Hello:
I have this function:
$f(z)=\frac{cos(t)+isin(t)}{e^{t}}$
whose domain is the line:
$z=(1+i)t$
I need to find the analytic continuation... | 5 | [
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kinematics/calculus
October 14th 2006, 04:52 PM
scorpion007
kinematics/calculus
hi, here is a paraphased question i am having trouble with:
A vehicle's mass (including passenger) = 400 kg
after travelling 400 m the car stops accelerating. At this instant, the car's brakes are applied, and in addition, a... | 5 | [
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A Polyhedral Puzzle
Barry Cox had an elegant approach with a nice twist, also observed by Franz Pichler:
The only equation you need for this is V − E + F = 2. The key thing to realize is that when you truncate P to form Q, you force all of the vertices of Q to be the intersection of 3 edges. From
this, you get... | 4 | [
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Solving Systems of Equations Using the Elimination Method
Recent Comments
quadratic equation c… on Modeling Data With Quadratic…
Lemuel on Quadratic Functions and Their…
Arizona Bayfield on How To Simplify Rational …
Suemac on Proving Lines Parallel with Tr…
Mr. Pi on Subsets of Real Numbers
There are two w... | 4 | [
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0... | 10,012 | 10012 | |
Inverse Tangent
05-08-2004 #1
Inverse Tangent
I'm creating a program (console), that converts rectangular coordinates to polar coordinates (to help me on my math work). Now, the problem is that the answers for my problems, and the answers my
program returns, are two different things. My answers are correct (a... | 4 | [
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-0.08642578125... | 10,013 | 10013 | |
Accumlation Points
December 22nd 2008, 08:57 AM #1
Newbie
Joined
Oct 2008
Posts
22
Accumlation Points
Find all accumulation points of the following set in R^2 with the usual metric.
{ (1/n+m , 1/n + 1/m) : n, m ∈ N }
If anyone helps me, I will be thankful.
Here is a starting point.
I... | 5 | [
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0.096191406... | 10,014 | 10014 | |
Bayesian Statistics
August 6th 2007, 10:02 PM #1
Member
Joined
Mar 2006
Posts
125
Bayesian Statistics
Hello,
I have a small question which I find hard to handle:
X~U(0,a)
a is unknown and his prior distribution is:
p c
g(a)=
1-p 2c
find the posterior distribution of a. for... | 5 | [
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0.03515625,
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0.042724609375,
-0.06445... | 10,015 | 10015 | |
How should I visualise RP^n?
up vote 23 down vote favorite
19
So I did some algebraic topology at university, including homotopy theory and basic simplicial homology, as well as some differential geometry; and now I'm coming back to the subject for fun via
Hatcher's textbook. A problem I had in the past and still have... | 4 | [
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determinant
A mathematical object that is useful in the analysis and solution of systems of linear equations. The determinant of a square matrix, which may represent a set of linear equations, is a number that
reveals important properties of the matrix. For example, if the matrix represents a two-dimensional trans... | 4 | [
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0.0213623046875,
-0.033935546875,
... | 10,017 | 10017 | |
Getting a differential equation for a function from a functional equation of its Mellin transform
up vote 13 down vote favorite
8
If $f$ is a locally integrable function then its Mellin transform $\mathcal{M}[f]$ is defined by $$ \mathcal{M}[f] (s) = \int_0^{\infty} x^{s - 1} f (x) dx . $$ This integral usually conver... | 4 | [
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Transfinite induction, a theorem of Pedersen, and chains of subalgebras of $B(H)$
up vote 9 down vote favorite
This post is closely related to this one. (In fact I copied some of its content.)
Let $H$ be an infinite dimensional separable complex Hilbert space. All $C^{\star}$-subalgebras of $B(H)$ are assumed to be n... | 5 | [
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0.00524... | 10,019 | 10019 | |
Perpendicular Distance from Point to Arc
June 12th 2012, 01:22 PM
lvleph
Perpendicular Distance from Point to Arc
I am sure the major portion of this has been covered, but I have an exception that I need to hash out.
I want to find the intersection of two great circle arcs (numerically). I have already dete... | 4 | [
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Statistical measures for defining an individual's degree of independence within state-dependent dynamic games
Abstract
Background
For organisms living or interacting in groups, the decision-making processes of an individual may be based upon aspects of both its own state and the states of other organisms around it. M... | 4 | [
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0.0308837890625,
-0... | 10,021 | 10021 | |
Linear algebra Question check
February 24th 2011, 04:15 PM #1
Member
Joined
Jul 2010
Posts
86
Linear algebra Question check
Question: Let B1;B2 be given column vectors in Rm and suppose that the set {B1,B2} is independent. Suppose that A is an mxn matrix and that AX1 = B1, AX2 = B2 for some column vecto... | 4 | [
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Research methods in nutritional anthropology
Contents - Previous - Next
This is the old United Nations University website. Visit the new site at http://unu.edu
Decision-making models have been employed in a number of anthropological studies to describe the process by which observed distributions of behaviour are ge... | 5 | [
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Topic: Loxodromic midpoint
Replies: 8 Last Post: Jun 17, ... | 5 | [
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0.046630859375,
-0.018310546... | 10,024 | 10024 | |
Find the Value
August 21st 2008, 02:58 AM #1
MHF Contributor
Joined
Jul 2008
From
NYC
Posts
1,489
Find the Value
Let t = theta for short
(1) If cos(t) = 0.2, find the value of:
cos(t) + cos(t + 2pi) + cos(t + 4pi)
(2) If cot(t) = -2, find the value of:
cot(t) + cot(t - pi) + cot(t -... | 4 | [
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-0.00823974609375,
0.007751... | 10,025 | 10025 | |
Effective yield
January 4th 2007, 05:03 PM #1
Newbie
Joined
Jan 2007
Posts
2
Effective yield
Okay here is the problem and this is all it tells you nothing more,
An antique was bought for $3,000 and was sold 10 years later for $6,000. Find the effective yield.
i do't think it's asking for profit... | 4 | [
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0.00750... | 10,026 | 10026 | |
Another inequality problem
June 3rd 2009, 08:09 AM #1
Junior Member
Joined
Mar 2009
Posts
52
Another inequality problem
Solve the below inequality:
$<br /> ({1 - \frac {x+2} {x^2}}) ^ {1/2} < \frac 2 3<br />$
I tried solving this as below :
squaring both side and after solving
$<br />... | 4 | [
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-0.0069580... | 10,027 | 10027 | |
ib
#include <boost/math/distributions/chi_squared.hpp>
namespace boost{ namespace math{
template <class RealType = double,
class Policy = policies::policy<> >
class chi_squared_distribution;
typedef chi_squared_distribution<> chi_squared;
template <class RealType, class Policy>
class chi_squared_distrib... | 4 | [
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0.01904296875,
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0.054931640625,
-0.045654296875,
0.0047607421875,
-0.0556640625,
-0.00130462646484375,
-0.... | 10,028 | 10028 | |
Physicst Proves That R2D2 Is Lighter Than Styrofoam
A physicist carefully examined the way R2D2 flies in Attack of the Clones, and has come to a startling discovery. Examining the thrust of R2's flight, then adding in gravity and resistance, he
discerned that R2's mass is 100 grams.
Rhett Alain, a physicist at Southe... | 4 | [
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0.091796875,
0.00157928466796875,
0.0712890625,
0.0030975341796875,
-0.08154296875,
-0.0341796875,
0.060791015625,
-0.00089263916015625,
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0.09619140625,
0.... | 10,029 | 10029 | |
[SOLVED] Proof by induction help needed (urgently)
June 9th 2010, 03:19 PM
suf
[SOLVED] Proof by induction help needed (urgently)
This is question 4 on June 2008 Further Pure 1 paper OCR (downloadable for OCR website) OCR > Qualifications > By type > AS/A Level GCE (current) > Mathematics > Mathematics > All doc... | 4 | [
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0.006195068359375,
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-0.08544921875,
0.0069... | 10,030 | 10030 | |
find a recurrence relation
June 4th 2008, 08:59 AM
robocop_911
find a recurrence relation
Find a recurrence relation for the number of ways to pay a bill of n dollars if the order in which the coins and bills are paid matters.
We have "coins" of 1, 2, 5, 10$ and "bills" of 5, 10, 20, 50 and 100$.
How to... | 4 | [
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-0.000005125999450683594,
... | 10,031 | 10031 | |
A result of differentiability
June 30th 2008, 07:25 PM #1
Newbie
Joined
Jul 2007
Posts
13
A result of differentiability
Let's f be a real function on R .Prove if f be differentiable in t with derivative A then :
For every e > 0 there be a d >0 such that for every open interval (x1,x2) containing t w... | 5 | [
0.0123291015625,
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0.048583984375,
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-0.0016632080078125,
0.0419921875,
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0.06396484375,
-0... | 10,032 | 10032 | |
Member Sizing
Member Sizing Process: The process involving member sizing includes calculations based on structural steel tables and assume equations standard in the field. The following link is a set of 3 tables
with all member sizes, maximum moments, shear stresses, deflections and other useful information :
Member ... | 5 | [
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0.018... | 10,033 | 10033 | |
Absolute Value Graphs
December 22nd 2008, 12:44 AM #1
Senior Member
Joined
Jul 2008
Posts
347
Absolute Value Graphs
Hi
i) abs(x) + abs(y) = 1
ii) abs(x+y) = 1
iii) abs(x) - abs(y) = 1
iv) abs(x-y) = 1
v) 2*abs(x) + abs(y) = 1
Could someone please show me how to sketch these ... | 4 | [
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0.06103515625,
-0.118... | 10,034 | 10034 | |
Solving Inequalities
Date: 07/13/99 at 17:08:59
From: tommy mandich
Subject: Solving Inequalities
1/(3x-1) < 2/(x+5)
Solve the inequality and express the solution in terms of intervals.
I know that you have to get the x's all on one side. When I do all the
arithmetic I get x > 7/5. I know that x can't = 1/3 and -5... | 4 | [
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-0.01104736328125,
-0... | 10,035 | 10035 | |
A cipher problem
November 29th 2009, 06:45 AM #1
Newbie
Joined
Nov 2009
Posts
6
A cipher problem
Consider the 26 letters of the alphabet together with the set of symbols {_, . , , , ;, :}
to complete a 31-character alphabet. Associate a->0, b->1, … ,z->25,_->26, .->27, ,->28, ;->29, and :->30. Consid... | 5 | [
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-0.077148437... | 10,036 | 10036 | |
Quadratic factors of a cubic polynomial
December 8th 2009, 12:27 PM
Detanon
Quadratic factors of a cubic polynomial
If x² + bx -2 is factor of xcubed + (2b-1)x² - p, find two possible values of p.
Im not sure what method to use to solve this. do i divide them?
December 9th 2009, 08:11 AM
Grandad
Hel... | 4 | [
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0.... | 10,037 | 10037 | |
Price of Pencils
Date: 10/07/2002 at 10:06:13
From: George
Subject: Word problems
The price of pencils has skyrocketed in recent years. Each year for
the last 7 years the price has increased, and the new price is the sum
of the prices for the two previous years. Last year a pencil cost
60 cents. How much does a penci... | 4 | [
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Obstructions to formally integrating vector fields in characteristic p?
up vote 11 down vote favorite
2
Let $M$ be a smooth scheme over some field $k$ of characteristic $p$, and $\vec X$ a vector field on it. Equivalently, $\vec X$ gives a map $Spec\ k[\epsilon]/\langle \epsilon^2 \rangle \times M \to
M$ whose reducti... | 4 | [
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logarithmic equation from points
May 27th 2006, 05:49 PM
asian5
logarithmic equation from points
i need to derive a logarithmic equation in the form y=aloge(x+b)+c
given that it passes through the points (0,0) (12,20) (30,30)
it is a positive log with a horizontal asymptote x<0
can someone please hel... | 5 | [
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0.0130615234375,
-0... | 10,040 | 10040 | |
Need help with Integration and completing the square
Integrate: 1/(x^(1/2)+x) I'm not really sure how to "complete the square"
Woah, thanks for that first step. I definitely wouldn't have looked at it that way. My main problem is I never learned how to "complete the square." I don't even know what that means!
Let's s... | 5 | [
0.0281982421875,
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0.043212890625,
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0.0771484375,
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0.0419921875,
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0.1357421875,
0.03369140625,
0.02319335937... | 10,041 | 10041 | |
RSA Decryption method
November 7th 2011, 03:11 AM
terrorsquid
RSA Decryption method
I am trying to understand how this method for simplifying the decryption process works. I understand that if I have the message c raised to the public exponent modulo the modulus, then to decrypt
it, I need to raise the encry... | 5 | [
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-0... | 10,042 | 10042 | |
Network Theory (Part 13)
October 11, 2011
Network Theory (Part 13)
John Baez
Unlike some recent posts, this will be very short. I merely want to show you the quantum and stochastic versions of Noether's theorem, side by side.
Having made my sacrificial offering to the math gods last time by explaining how everythin... | 5 | [
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0.0179443359375,
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-0.0308837... | 10,043 | 10043 | |
Cyclic Group Proof
Date: 12/15/2008 at 19:44:19
From: Steven
Subject: Cyclic groups
How can I prove that if a group G has a unique subgroup of order d for
every d that divides |G|, then G is cyclic? I can prove the converse
but this gives me problems.
Date: 12/17/2008 at 03:25:48
From: Doctor Jacques
Subject: Re:... | 4 | [
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0.02563476... | 10,044 | 10044 | |
Series problems--conv. or div?
March 8th 2008, 01:19 PM #1
Newbie
Joined
Aug 2007
Posts
11
Series problems--conv. or div?
I have four calculus problems that I haven't been able to figure out. The general question for them is "Test the series for convergence or divergence by explicitly showing the test be... | 5 | [
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-0.0126953125... | 10,045 | 10045 | |
Recurrence relations
February 24th 2011, 09:45 AM #1
Member
Joined
Oct 2009
Posts
114
Thanks
1
Recurrence relations
$\textup{A 2 x 7 rectangle has tiling with 1 x 1 and 1 x 2 tiles (singletons and doubletons).}$
$\textup{How many such tilings of a 2 x 7 grid are there?}$
$\textup{Let }a_{n}\... | 4 | [
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0.00503... | 10,046 | 10046 | |
algebra help
January 1st 2008, 05:02 PM #1
becs101
Guest
algebra help
hi there. i was wondering if any one could explain to me how to put this equation:
2^n * 8^n /2^2n * 16 in the form of 2^(an+b) the book says the answer is 2^(2n-a) i just cant work out hoe to solve it.
another equation i need help wi... | 4 | [
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0.0546875,
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0.1279296875,
-0.031494140625,
... | 10,047 | 10047 | |
Variance Shadow Mapping
Purely Functional Rendering Engine
Variance Shadow Mapping
Posted by on October 14, 2012
One of the test examples in the repository is an implementation of Variance Shadow Mapping, which lets us demonstrate multi-pass rendering through a relatively simple effect. In this post we’ll first
have... | 4 | [
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0.13085... | 10,048 | 10048 | |
Math Forum Discussions
quasi
Posts: 10,188
Registered: 7/15/05
zero sets of infinitely differentiable functions
Posted: Dec 3, 2013 1:07 AM
I think the following is true ...
Proposition:
For any closed subset A of R there exists an infinitely
differentiable function f:R -> R such that A = f^(1)(0).
Proof:
If A = ... | 5 | [
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-0.038330078125,
... | 10,049 | 10049 | |
Estimating genomic breeding values from the QTL-MAS Workshop Data using a single SNP and haplotype/IBD approach
Abstract
Genomic breeding values were estimated using a Gibbs sampler that avoided the use of the Metropolis-Hastings step as implemented in the BayesB model of Meuwissen et al., Genetics 2001, 157:1819–1829... | 4 | [
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0.0111694... | 10,050 | 10050 | |
Snail Problem
Filed under: mathematics — Darmok @ 01:44 UTC
Tags: calculus, differential equations, math, mathematics
A friend mentioned this problem a while back, and while I was able to use a computer to get an accurate numerical solution, I really want to find an analytical solution using math. The problem is
that... | 5 | [
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0.09375,
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... | 10,051 | 10051 | |
Math Help
We know that $\forall{x}\in(0,1)~\frac{1}{1+x^4}=\sum_{n=0}^{\in fty}(-1)^nx^{4n}$ so \begin{aligned}\forall{x}\in(0,1)~\frac{1+x^2}{1+x ^4}&=(1+x^2)\sum_{n=0}^{\infty}(-1)^nx^{4n}\\<br /> &=\sum_{n=
0}^{\infty}(-1)^nx^{4n}+\sum_{n=0}^{\infty}(-1)^nx^{4n+2}\end{aligned} So \begin{aligned}\int_0^1\frac{1+x^2}... | 5 | [
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0.02392578125,
-0.197265625,
-0.0023193359375,
-0.0018157958984375,
-0.0368652343... | 10,052 | 10052 | |
Solving an equation.
How about solving this: $6/5+3/(w-3)=9/[5(w-3)]$ LCD= 5(w-3) $(6/5)(5)(w-3)+5(w-3)[3/(w-3)]=9/[5(w-3)](5)(w-3)$ $6w-18+5w-15(3/(w-3)=9/[5(w-3)](5)(w-3)$ 5w-15(3/(w-3)=9/[5(w-3)](5)(w-3) that's the
part I'm having trouble with..
Last edited by mr fantastic; March 21st 2009 at 02:20 PM. Reason: Edit... | 4 | [
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0.091796875,
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0.087890625,
-0.08154296875,
0.013977... | 10,053 | 10053 | |
Solving an integral by parts or by substitution?
February 22nd 2013, 02:36 AM
UnbeatableZoomy
Solving an integral by parts or by substitution?
Hi all,
I'm wondering is it bettetr to solve the integral v/((1 + v^2)^1/2) dv using integration by parts, making v'=((1+v^2)^-1/2) or to solve it using substitution... | 5 | [
0.0220947265625,
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0.07421875,
-0.031982421875,
-0.041015625,
0.0546875,
0.06787109375,
-0.0... | 10,054 | 10054 | |
Modular curve parametrizing two cyclic subgroups of an elliptic curve
up vote 5 down vote favorite
The aim of this question is to better understand the following moduli space/modular curve, for which I propose (temporarily) the name $Y_0(M,N)$. We define $Y_0(M,N)$ as the moduli space
parametrizing an elliptic curve $... | 4 | [
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0.09814453125,
-0.06787109375,
-0.11767578125,
0.150390625,
0.0220947265625,
-0.060302734375,
-0.061279296875,
0.03564453125,
0.08837890625,
-0.015869140625,
0.... | 10,055 | 10055 | |
Polymath1Wiki
Prime counting function
From Polymath1Wiki
One way to find primes is to find a polynomial time algorithm to compute π(x), the number of primes less than x, to reasonable accuracy. For example, if we can find π(x) to better than 10^k / 2
accuracy for k-digit x, we can break the square root barrier. We d... | 4 | [
0.037109375,
-0.0155029296875,
-0.0021209716796875,
0.0279541015625,
0.0272216796875,
0.02294921875,
0.046875,
0.03173828125,
0.00653076171875,
-0.009033203125,
-0.05712890625,
0.09375,
0.07568359375,
0.048828125,
0.026123046875,
-0.050537109375,
0.025634765625,
0.019775390625,
0... | 10,056 | 10056 | |
Bijective proof of weak form of Stirling's approximation
up vote 6 down vote favorite
4
There are short and sweet proofs of various forms of Stirling's approximation. But even the sweetest among them don't instill the same conviction in the reader as a direct bijective proof.
Computer scientists can often get away wi... | 4 | [
0.0308837890625,
-0.07080078125,
0.027587890625,
-0.01190185546875,
-0.01416015625,
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0.0390625,
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0.0439453125,
-0.09765625,
0.0184326171875,
0.003814697265625,
0.0177001953125,
0.019775390625,
0.0634765625,
0.03369140625,
0.057373046875,... | 10,057 | 10057 | |
Solve Systems of Equations - Tutorial
Example 1: Solve the system of linear equations.
-2x + 3y = 8
3x - y = -5
Solution to example 1
• multiply all terms in the second equation by 3
-2x + 3y = 8
9x - 3y = -15
• add the two equations
7x = -7
• Note: y has been eliminated, hence the name: method... | 4 | [
-0.14453125,
-0.02294921875,
-0.000797271728515625,
0.014892578125,
0.09228515625,
-0.04248046875,
-0.0247802734375,
0.0146484375,
-0.03515625,
0.0157470703125,
0.0947265625,
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0.07763671875,
-0.00665283203125,
-0.01544189453125,
0.030517578125,
-0.08203125,
-0.0664062... | 10,058 | 10058 | |
Can formally differentiating give a derivative of a discrete function?
up vote 9 down vote favorite
1
When I teach calculus, I really try to stress the importance of knowing the domain of a function.
One example that I sometimes like to use to show students the importance of inspecting the domain is the following: $f... | 5 | [
-0.028076171875,
-0.007171630859375,
0.001800537109375,
-0.048583984375,
-0.042236328125,
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-0.0478515625,
0.00136566162109375,
0.0693359375,
0.083984375,
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0.0025634765625,
0.062255859375,
0.043212890625,
-0.06884765625,
0.00469970703125,
... | 10,059 | 10059 | |
Math Help
September 23rd 2010, 09:29 PM #1
tan identity
I have this question
Express tan (90 + x) in terms of tan x
not really sure what to do with it, using the compound angles i have gotten this far
$\frac{tan90+tanx}{1-tan90tanx}$
= $\frac{\infty+tanx}{1-\infty tanx}$
not really sure h... | 4 | [
-0.08349609375,
0.0228271484375,
0.0859375,
0.03564453125,
-0.00579833984375,
0.057861328125,
0.051025390625,
-0.023193359375,
-0.02197265625,
0.02587890625,
0.0274658203125,
-0.06494140625,
-0.004119873046875,
0.07080078125,
0.0859375,
0.0024261474609375,
0.0079345703125,
-0.00191... | 10,060 | 10060 | |
Detection of copy number variation from array intensity and sequencing read depth using a stepwise Bayesian model
Abstract
Background
Copy number variants (CNVs) have been demonstrated to occur at a high frequency and are now widely believed to make a significant contribution to the phenotypic variation in human popu... | 4 | [
-0.07373046875,
-0.055908203125,
-0.0306396484375,
-0.11181640625,
-0.049072265625,
-0.029296875,
-0.0218505859375,
-0.00732421875,
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-0.048828125,... | 10,061 | 10061 | |
BEATCALC
BEATCALC: Beat the Calculator!
Back to Calculation Tips & Tricks
┏━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━... | 4 | [
0.045166015625,
0.048583984375,
-0.00830078125,
-0.041748046875,
-0.1220703125,
0.051025390625,
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0.00830078125,
-0.037109375,
-0.01397705078125,
-0.00238037109375,
-0.07568359375,
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-0.0126953125,
-0.048583984375,
-0.048583984375,
-0.07080078125,
0.11572265625,... | 10,062 | 10062 | |
Level of significance without mean given
November 5th 2008, 08:11 PM #1
Newbie
Joined
Nov 2008
Posts
2
Level of significance without mean given
Hi, i can't remember how to do this problem and i have been having trouble finding an answer.
The question is "An SRS of size 15 is taken from a normal dist... | 5 | [
0.029296875,
0.0615234375,
0.037109375,
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0.05859375,
-0.0654296875,
-0.0301513671875,
0.12255859375,
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0.028564453125,
0.05224609375,
-0.060546875,
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0.0164794921875,
-0.0179443359375,
0.033203125,
-0.08935546875,
-0.094... | 10,063 | 10063 | |
Polymath1Wiki
Thin triangles
From Polymath1Wiki
The purpose of this page is to establish
Theorem: the hot spots conjecture is true for acute-angled triangles ABC when $\angle BAC$ is sufficiently small.
Let us write $\varepsilon := \angle BAC$, which we view as being small. We may normalize A = (0,0) and B = (... | 4 | [
-0.05908203125,
0.01080322265625,
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0.004486083984375,
-0.0703125,
-... | 10,064 | 10064 | |
Find solutions of linear system
February 19th 2010, 12:41 PM
DarK
Find solutions of linear system
I tried rearranging the equation to get:
$x = 1/2 Ab$
I mulitplied 1/2 Ab through but I did not end up with the correct answer.
What am I doing wrong?
Any help is appreciated!
February 19th 2010... | 5 | [
-0.048095703125,
-0.01904296875,
-0.028076171875,
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0.07958984375,
-0.07421875,
-0.06... | 10,065 | 10065 | |
mathematical induction
September 26th 2009, 11:55 AM #1
Junior Member
Joined
Sep 2009
Posts
61
mathematical induction
use mathematical induction to prove the formula for every positive integer n.
3 + 5 + 7 + ... + (2n +1)= n(n +2)
this is a beastly problem.
i have proven that
n=1 so ... | 4 | [
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-0.0177001953125,
0.0717... | 10,066 | 10066 | |
2 Optimization Problems
January 20th 2008, 09:25 AM #1
Member
Joined
Jun 2007
Posts
120
2 Optimization Problems
An open topped rectangular box with a square base is to be constructed with a volume of $32m^{3}$. Find the Dimension that require the lease amount of surface material.
and...
In micr... | 5 | [
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0.052734375,
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-0.015869140625,
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0.0390625,
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... | 10,067 | 10067 | |
Binomial error paradox
October 26th 2012, 09:10 AM
Shakarri
Binomial error paradox
In a binomial distribution if the chance of something happening is p and q=(1-p) and the variance for the event occurring is pq. The variance for the event not occurring is also qp. Since the
error within a given confidence in... | 5 | [
0.08447265625,
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0.037109375,
0.01214599609375,
-0.00390625,
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0.030517578125,
0.03759765625,
-0.0234375,
0.0260009765625,
-0.0186767578125,
-0.0... | 10,068 | 10068 | |
An Uncountable Set
Date: 09/28/98 at 09:48:51
From: Claudia Celenti
Subject: Uncountable sets
I have to prove using diagonalization that the set of functions from N
to N is uncountable, but I'm not familiar enough with this proof.
If you have a chance, please help me to put this issue to rest.
Best regards,
Claudi... | 5 | [
-0.04736328125,
0.0283203125,
-0.0005645751953125,
0.026611328125,
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0.004119873046875,
-0.072265625,
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-0.011962890625,
-0.06225585... | 10,069 | 10069 | |
Mean Vector and Covariance Matrix
6. Process or Product Monitoring and Control
6.5. Tutorials
6.5.4. Elements of Multivariate Analysis
6.5.4.1. Mean Vector and Covariance Matrix
The first step in analyzing multivariate data is computing the mean vector and the variance-covariance matrix.
Sample... | 5 | [
0.046630859375,
-0.07421875,
-0.072265625,
-0.06494140625,
0.01153564453125,
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0.033935546875,
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-0.037353515625,
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-0.01397705078125,
0.0015716552734375,
0.00... | 10,070 | 10070 | |
Will the Triangle People Meet?
Date: 11/09/2007 at 00:23:24
From: Haim
Subject: Puzzle: are the triangle people going to meet
Triangle ABC has equal sides of 10 meters each. At each corner stand
person A, B, and C respectively. At the same moment all of them start
moving at 1 meter / second velocity: person-A is mo... | 5 | [
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-0.01422119... | 10,071 | 10071 | |
Implicit differentiation problem
February 6th 2009, 12:07 PM
gracey
Implicit differentiation problem
Find dy/dx in terms of x and y
ln(x²+1) + ln(y+1) = x + y
thanks any help is fab (Thinking)
February 6th 2009, 12:13 PM
running-gag
February 6th 2009, 12:22 PM
Soroban
Hello, gracey!
Exactl... | 4 | [
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0.052978515625,
-0.041259765625,
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-0.111328125,
-0.03... | 10,072 | 10072 | |
A proof for loop-law constraints in stoichiometric metabolic networks
Abstract
Background
Constraint-based modeling is increasingly employed for metabolic network analysis. Its underlying assumption is that natural metabolic phenotypes can be predicted by adding physicochemical
constraints to remove unrealistic metab... | 4 | [
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-0.0003910064697265625,
0.00469970703125,
-0.048095703125,
-0.0493... | 10,073 | 10073 | |
Equilibrium in a two-good market
Nick Rowe put up
a reference post
about capital and interest. I thought I'd follow along with the information transfer model. Rowe initially sets up two markets: apples and bananas. If you'd like to start from the beginning with
this, here's my
original post
on information theory in... | 4 | [
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-0.01660156... | 10,074 | 10074 | |
Spherical Geometry Proof Help Wanted
August 1st 2008, 01:03 PM #1
Junior Member
Joined
Mar 2008
Posts
40
How would one go about proving that each point on a sphere not within an n-sided convex spherical polygon nor its antipode is contained in (n-2) lunes defined by the angles of said polygon?
I thin... | 4 | [
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... | 10,075 | 10075 | |
Yet Another Eliot Blog
I will provide a solution for problem 2 in Scala. I think I will mark each solution moving forward as being just a solution. I have received feedback that someone can find this and learn bad style
or not learn the language properly. I don’t want that to happen and you have been warned. The pr... | 5 | [
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-0.0390625,
-0.0274658203125,
0.... | 10,076 | 10076 | |
Absolute Extrema Problem Stuck again
March 23rd 2009, 05:59 AM #1
Junior Member
Joined
Mar 2009
Posts
61
Absolute Extrema Problem Stuck again
I though i had a grasp of these but this one is a little different from the other ones.
Find the locations (ordered pairs) of all absolute extrema (min max) f... | 4 | [
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0.037841796875,
-0.03515625,
-0.02001953125,
0.0732421875,
-0.04296875,
0.010070... | 10,077 | 10077 | |
Decision Modeling and Optimization in Game Design, Part 8: Graph Search
This article is the eighth in a continuing series on the use of decision modeling and optimization techniques for game design. The full list of articles includes:
The spreadsheet for this article can be downloaded here: link
Met... | 5 | [
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0.06640625,
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0.050537109375,
0.003097534... | 10,078 | 10078 | |
Optimisation with an orthogonal matrix
July 1st 2009, 06:55 AM #1
Newbie
Joined
Jul 2009
Posts
2
I have an optimisation problem as follows:
min ||AP - B||^2_F
s.t. P'P = I
where A, B, P are real n*n matrices, || . ||_F is the Frobenius norm, A,B are symmetric positive semi-definite matrices,... | 4 | [
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0.024658203125,
-0.0202636718... | 10,079 | 10079 | |
Applications of Surface Networks to Sampling Problems in Computer Graphics
Von Herzen, Brian (1988) Applications of Surface Networks to Sampling Problems in Computer Graphics. California Institute of Technology . (Unpublished) http://resolver.caltech.edu/
CaltechCSTR:1988.cs-tr-88-15
Postscript
See Usage Policy.
... | 4 | [
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0.007354736328125,
-0.0068359375... | 10,080 | 10080 | |
Linear Regression in MATLAB
Fitting a least-squares linear regression is easily accomplished in MATLAB using the backslash operator: '\'. In linear algebra, matrices may by multiplied like this:
output = input * coefficients
The backslash in MATLAB allows the programmer to effectively "divide" the output by the input... | 5 | [
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0... | 10,081 | 10081 | |
Gradient represented through fundamental form
February 24th 2011, 01:26 PM #1
Gradient represented through fundamental form
If $E, F, G$ are the coefficients of the first fundamental form in a parametrization $\mathbf{x}:U \subset \mathbb{R}^2 \mapsto S$, then $grad \ f$ on $\mathbf{x}(U)$ is given by:
$grad... | 4 | [
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-0.061... | 10,082 | 10082 | |
Totally Differentiable?
October 25th 2009, 03:52 PM
JohnLeee
Totally Differentiable?
Q. If U⊆R^n is an open set with a ∈ U, and f: U->R^m and g: U->R^m are totally differentiable at a, prove that jf+kg is also totally differentiable at a and that (D(jf+kg))a = j(Df)a+k(Dg)a.
What I did: Let p(x) = jf(x)+kg(... | 5 | [
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-0.00408935546875,
-0.01239013671875,
0.00433349... | 10,083 | 10083 | |
mathematical question from physics
June 9th 2011, 01:56 PM #1
MHF Contributor
Joined
Nov 2008
Posts
1,401
mathematical question from physics
$\vec{E}=f_1(z-ct)\hat{x}+f_2(z-ct)\hat{y}+0\hat{z}$
$f_1(u)$ and $f_2(u)$ are functions of "u"
u=z-ct
i have the formula
$abla \times \vec{E}=-\fra... | 4 | [
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... | 10,084 | 10084 | |
Understanding
Tuesday, July 29
2-8-16-43-74 MB:1 MP:4
NEXT EST. JACKPOT: $ 87 million
Understanding Mega Millions Chances
Effective Oct. 19, 2013
No matter how many people play Mega Millions, the chances of winning never change. The chances of winning are based on the amount of number combinations, not the number o... | 4 | [
0.039306640625,
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0.02783203125,
-0.09765625,
... | 10,085 | 10085 | |
Epsilon - Delta Proofs
Date: 1/23/96 at 13:47:58
From: Catherine Miller
Subject: Def. of Limit?
lim f(x) = L
x-->c
0<|x-c|< d (delta), then |f(x)-L|< E (epsilon)
Example:
lim(2x - 5) = 1
find delta such that |(2x - 5) - 1| < 0.01 whenever 0 < |x - 3| < delta
the f(x) / \the L ... | 4 | [
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0.036376953125,
0.018798828125,
-0.025390625,
-0.02880859375,
-0.030395507812... | 10,086 | 10086 | |
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Topic: Can I get some help please.
Replies: 4 Last Post: ... | 4 | [
0.041748046875,
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0.01708984375,
-0.050537109375,
0.045654... | 10,087 | 10087 | |
Trig integration
June 20th 2008, 02:49 PM #1
Trig integration
I need some help with this integral.
$\int{\frac{1}{4}\sin ^{2}2\theta \cos 2\theta }d\theta$
I've tried using integration by parts:
$u=\sin ^{2}2\theta$
$\frac{dv}{d\theta }=\cos 2\theta$
And got the integral as:
$\frac{1... | 5 | [
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0.01507568359375,
-0.07470703125,
0.026123046875,
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0.01220703125,
... | 10,088 | 10088 | |
Deriving a Trig Identity
Date: 04/09/98 at 12:33:14
From: Jim
Subject: trig identity
We are trying to do the derivation of the identity:
tan(x) + tan(y) + tan(z) = tan(x)tan(y)tan(z)
for a triangle if x, y and z are angles of the triangle. We have tried
to derive the formula and have searched in trig texts but ... | 4 | [
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0.06103515625,
0.087890625,
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-0.08740234375,
0.03515625,
-... | 10,089 | 10089 | |
Information theory in economics, Part I: Rational inattention
Economic activity involves making decisions. In order to make decisions, agents need information. Thus, the problem of acquisition, transmission, and uses of information has been occupying the
economists’ attention for some time now (there is even a whole s... | 4 | [
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0.0927734375,
0.06640625,
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0.02734375,
-0.0164794921875,
-0... | 10,090 | 10090 | |
Probability That Someone Shares Your Birthday
Date: 05/14/2002 at 16:40:38
From: Sam
Subject: Probabilty Someone Shares MY Birthday?
What is the minimum number of people we would need to assemble in a
group such that the probability that at least one person in the group
has the same birthday as you is greater than 50... | 4 | [
0.00775146484375,
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-0.... | 10,091 | 10091 | |
Walrasian with Indivisible Goods
A paper by Azevdo, Weyl and White in a recent issue of Theoretical Economics caught my eye. It establishes existence of Walrasian prices in an economy with indivisible goods, a continuum of agents
and quasilinear utility. The proof uses Kakutani’s theorem. Here is an argument based on a... | 4 | [
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-0.0159912109375,
-0... | 10,092 | 10092 | |
Computability
7.6 Computability
This section under major construction.
In David Hilbert's famous 1900 address to the International Congress of Mathematics, he asserted:
Take any definite unsolved problem, such as the question as to the irrationality of the Euler-Mascheroni constant γ, or the existence of an inf... | 5 | [
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-0.03759765625,
0.017... | 10,093 | 10093 | |
Probability question
12-13-2005 08:38 PM #2
12-13-2005 08:09 PM #1
Posts
35
Thanks
0
Thanked 0 Times in 0 Posts
Probability question
Here is the problem:
To get to work, a commuter must cross train tracks. The time the train arrives varies slightly from day to day , but the commuter estimates ... | 4 | [
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-0.05834... | 10,094 | 10094 | |
Differentiation
September 6th 2006, 11:23 AM
Showcase_22
Differentiation
I am a 16 year old student who is due to start college. I need help with this question!
Find an expression in terms of x and y for dy/dx, given that:
y^3+(3x^2)y-4x=0
Any help would be greatly appreciated.
September 6th 2006... | 5 | [
-0.06884765625,
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-0.0264892578125,
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-0.01300048828125,
-0.... | 10,095 | 10095 | |
Homework Help
Posted by james on Monday, April 23, 2012 at 8:21pm.
Jennifer invested $2,500 in an account earning 3.5% interest compounded continuosly. How much money will she have in the account after 15 years?
• algebra 2 - Reiny, Monday, April 23, 2012 at 9:05pm
continuous growth is given by the equation
... | 4 | [
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-0.0192871... | 10,096 | 10096 | |
PostgreSQL wiki
Range aggregation
From PostgreSQL wiki
Range aggregation
Works with PostgreSQL
8.4
Written in
SQL
Depends on
Nothing
Assume you have a table of ranges expressed as "start" (s) and "end" (e) columns; we'll assume that these are half-open intervals, i.e. each row represents the range [s,e). We ... | 5 | [
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0.07861328125... | 10,097 | 10097 | |
[SOLVED] half-angle identity problem
January 1st 2006, 09:08 AM
cherica148
[SOLVED] half-angle identity problem
Hey,
I'm doing a problem in which we are supposed to solve for cos7.5 degrees using the half-angle identities.
I got to +/- square root of (1+cos15)/2, and can't figure out how to find cos15(w... | 4 | [
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... | 10,098 | 10098 | |
Finding the probability of a random person
May 30th 2009, 10:05 PM
MathRules!
Finding the probability of a random person
Of a group of patients having injuries, 28% visit both a physical therapist and a chiropractor and 8% visit neither. Say that the probability of visiting a physical therapist exceeds the
p... | 4 | [
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