content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Adaptive secure data transmission method for OSI level 1
Page 81
In field tests a wide range of modulation method and bit rates were studied in wireless and
wired environments, Figures 5.9-5.10. The following settings (parameters) over a VHF radio
channel were used in the field tests of the adaptive modem prototype:
... | 4 | [
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Math Help
December 4th 2006, 07:02 AM #1
Newbie
Joined
Oct 2006
Posts
15
help
a musical group's new single is released weekly sales s (in thousands) increase steadily for a while and then decrease as given by the function s = -2<t-20> + 40 where t is the time (in weeks).
what was the maximum number ... | 4 | [
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Patent US20020013799 - Accelerated montgomery multiplication using plural multipliers
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of provisional application Serial No. 60/203,409, filed May 11, 2000, entitled Cryptographic Acceleration Methods and Apparatus, the disclosure of whic... | 4 | [
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Radical Ideals
October 8th 2011, 04:41 PM #1
Radical Ideals
Hello all,
I was wondering if anyone could help me answer the question: find ideals $I,J$ of $k[x_1,\ldots,x_n]$ such that $\sqrt{I+J} ot= \sqrt{I} + \sqrt{J}$, where k is an algebraically closed field
(i.e. find a counterexample) Can anyone giv... | 5 | [
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bearing
November 22nd 2006, 04:08 AM
Sohail
bearing
Q1: a point Pis 12 kilometers due north of another point Q.The bearing of a lighthouse, R, from P is 135 and, fro Q, it is 120. calculate the distance of PR.
November 22nd 2006, 05:25 AM
earboth
Quote:
Hello, Sohail,
1. Draw a sketch of the de... | 4 | [
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application
September 27th 2007, 09:40 PM
cazimi
application
Theorem: The force on a submerged vertical plane area equals the product of the weight per unit volume, the submerged area, and the depth of the centroid of the area below the surface
1. What force must be withstood by a vertical dam 80ft long and... | 4 | [
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Variance Problem
February 11th 2013, 12:42 AM
VinceW
Variance Problem
Someone is looking for a cat in one of thirty trees. The probability of the cat being an any tree is the same for all trees.
What is the expected value and variance of the number of trees that need to be searched to find the cat?
My ... | 5 | [
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2 questions on coholomogy groups
A1: Simple diagram chasing. Take [b] in H^q(B), b in Ker d such that g*[b]=[g(b)]=0. I.e. g(b)=dc for some c in C^q-1(C). To show: there exists a in C^q(A) and b' in C^q-1(B) such that b-db'=f(a).
Choose b' in g^-1(c) (which exists since g is surjective). Note that since g is a chain m... | 4 | [
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Help analysing this circuit - how does it act like a low pass filter?
Hmmm did your post get changed? I just finished typ[ing this, maybe i got confused. Will try to address your question iin a couple minutes.
applestrudle
I am still unsure why it functions as a low pass filter. What happens to the high frequencies... | 4 | [
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sandwich measurable set
October 14th 2013, 02:44 AM #1
Junior Member
Joined
Oct 2013
From
LONDON
Posts
29
sandwich measurable set
Suppose that A is subset of R (real line) with the property for every ε > 0 there are measurable sets B and C s.t. B⊂A⊂C and m(C\B)<ε
Prove A is measurable
By defi... | 5 | [
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Just some prime number fun
February 25th 2013, 05:33 PM #1
Member
Joined
Jun 2008
Posts
148
Just some prime number fun
Define a list of $2^k$ consecutive integers that has the property that every prime number from $2$ to 2^(2k) divides into some term in the list, a composite list of order k.
ex;
... | 4 | [
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Physics Forums - View Single Post - Help me (Spin Operators)
An easy (not easy) 1st year undergraduate project:
Energy eigenvalues of a single spin-1/2 system which Hamiltonian is given by
H = - k S^z
are -/+ (1/2 k).
I got that using the spin operator S^z = 1/2 Sigma^z (let h_bar = 1), Hamiltonian is in diagonali... | 4 | [
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Gap Detection for Genome-Scale Constraint-Based Models
Advances in Bioinformatics
Volume 2012 (2012), Article ID 323472, 10 pages
http://dx.doi.org/10.1155/2012/323472
Research Article
Gap Detection for Genome-Scale Constraint-Based Models
^1Center for the Study of Biological Complexity, Virginia Commonwealth Univer... | 4 | [
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higher parallel transport
Context
$\infty$-Chern-Weil theory
Ingredients
Connection
Curvature
Theorems
Differential cohomology
Ingredients
Connections on bundles
Higher abelian differential cohomology
Higher nonabelian differential cohomology
Fiber integration
Application to gauge theory
Contents
Idea
A ... | 4 | [
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... | 15,813 | 15813 | |
Inner Product Space
November 13th 2010, 02:06 PM #1
Newbie
Joined
Dec 2008
Posts
21
Inner Product Space
Let V be an inner product space. Let $\{e_n\}_1^\infty$ be a complete orthonormal sequence in V. Suppose that $f,g \in V$ with $f = \sum_{n=1}^{\infty}c_ne_n$ and $g= \sum_{k=1}^\infty d_ke_k$.
Pro... | 4 | [
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Time ordered product & Green's function
The point is to use the Klein Gordon operator on the T-product. Note that it is defined as [itex]T(\phi(x)\phi(y))=\theta(x^0-y^0)\phi(x)\phi(y)+\theta(y^0-x^0)\phi(y)\phi(x)[/itex] which means that
when you apply the spatial derivation it passes through the thetas and acts direc... | 4 | [
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Proof of disconnected sets
December 13th 2008, 12:00 PM
EricaMae
Proof of disconnected sets
I have to show that given any topological space Y, if a closed subset of Y is disconnected then it must be the union of two disjoint closed sets.
i.e. C= U union V where U and V are closed nonempty sets, and their in... | 5 | [
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differential equation word problem.
May 15th 2007, 01:08 PM #1
Junior Member
Joined
Nov 2006
Posts
41
differential equation word problem.
suppose an object of weight 128 lbs is projected downwards with an initial velocity of 10ft/s in medium that offers resistance of magnitude 8|v|. Assuming gravitationa... | 5 | [
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Patent US6065007 - Computer method, apparatus and programmed medium for approximating large databases and improving search efficiency
FIELD OF THE INVENTION
The present invention relates in general to a computer method, apparatus, and programmed medium for approximating low-dimensional data distributions in a database... | 4 | [
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Implementation of Surface Radiation and Fluid-Structure Thermal Coupling in Atmospheric Reentry
International Journal of Aerospace Engineering
Volume 2012 (2012), Article ID 402653, 8 pages
http://dx.doi.org/10.1155/2012/402653
Research Article
Implementation of Surface Radiation and Fluid-Structure Thermal Coupling ... | 4 | [
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Patent US6456622 - Method for knowledge acquisition for diagnostic bayesian networks
BACKGROUND OF THE INVENTION
This invention pertains generally to Bayesian networks, and more particularly to the acquisition of probabilistic knowledge pertaining to devices or systems being modeled from domain experts/
knowledge engi... | 4 | [
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Calculating crh
By Tony DiGiulian
Updated 23 Dece... | 4 | [
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Pratical Problem
April 28th 2008, 01:17 PM
jigger1
Pratical Problem
I need to create a fenced area along the side of a barn. Six hundred feet of fencing is available to use.
What are the dimensions which give the maximum area?
April 28th 2008, 01:22 PM
Jameson
Quote:
You have two variables here... | 4 | [
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limit proof
December 13th 2010, 03:46 AM
HallsofIvy
Is this related to your earlier question about
$\left(1+\frac{1}{n}\right)^{nh}= 1+h+\frac{(nh)(nh-1)}{2!}\;\frac{1}{n^2}+.....$
for n= 1 and h= 1/2?
The left side is equal to $\sqrt{2}$. The right hand side is certainly NOT "3/2".
The first fou... | 5 | [
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Physics Forums - View Single Post - Principal G-bundle and bundle of bases (footnote)
Astronomy
Sci Advisor
PF Gold
P: 23,101
The following came up in Lethe's forms thread, but I'll separate it out and add to it to use as a footnote in Gravitivity thread---group action, differential forms, bundles all come up... | 4 | [
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trying to understand an n power algebraic formula!
Hello, does anyone know why: [(n+3)/n]^n = [(n+3)/(n+2)]^n * [(n+2)/(n+1)]^n *[(n+1)/n]^n I try but no success. Thank you guys!
\displaystyle \begin{align*} \left(\frac{n+3}{n+2}\right)^n \cdot \left(\frac{n+2}{n+1}\right)^n \cdot \left(\frac{n+1}{n}\right)^n &= \frac... | 4 | [
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Momentum, colliding particles.
December 10th 2012, 01:04 PM #1
Momentum, colliding particles.
Hello,
I have a question about the following question:
'Two particles A and B are moving on a smooth horizontal plane. The mass of A is km where 2 < k < 3, and the mass of B is m. The particles are moving along... | 4 | [
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GMAT Algebra
• GMAT Prep (USA)
•
• GMAT Prep (International)
•
• Favorite GMAT Articles
□ 800score GMAT Course Reviews
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□ GMAT Essay Tips & Grading from 800score
•
• Free GMAT Prep
□ Free GMAT CAT test
□... | 4 | [
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Rearranging the quadratic formula
April 14th 2012, 02:26 AM
SSmith
Rearranging the quadratic formula
Hi guys, I've been tasked with rearranging the quadratic root formula to make "a" the subject. I've been struggling on this one for a little while now and can't figure out how to isolate a. For
reference, the... | 4 | [
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Show that g is differentiable and bounded
November 20th 2009, 01:08 PM #1
Newbie
Joined
Nov 2009
Posts
15
Show that g is differentiable and bounded
Given the piecewise function
g(x) =
{ x^(3)e^(-x^(2)/4)sin(4/x^(2)) if x=/=0
{ 0 if x = 0
Prove that g is differentiable and g' is bounded... | 5 | [
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Remarks on Constitutive Modeling of Nanofluids
Advances in Mechanical Engineering
Volume 2012 (2012), Article ID 927580, 6 pages
http://dx.doi.org/10.1155/2012/927580
Research Article
Remarks on Constitutive Modeling of Nanofluids
U.S. Department of Energy, National Energy Technology Laboratory (NETL), 626 Cochrans ... | 4 | [
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half life word problem using logs
December 1st 2009, 11:59 AM #1
Junior Member
Joined
May 2009
Posts
36
half life word problem using logs
a 50-mg sample of cobalt-60 decays to 40mg after 1.6min. determine the half-life of the cobalt-60.
this is as far as i got before getting stuck
M = C $(\frac... | 5 | [
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Using Exponentials
February 21st 2011, 04:47 PM #1
Member
Joined
Oct 2010
Posts
133
Using Exponentials
I could use some help getting started on this proof. Any help would be appreciated.
Prove that if $f:[0,1]\rightarrow \mathbb{R}$ is differentiable and $f(0)=f(1)=0$, then for any $a\in \mathbb{R},... | 5 | [
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Patent US5229551 - Hysteresis compensation for a digitizer tablet
FIELD OF THE INVENTION
The present invention relates to digitizers that process data for determining the values of signals representing the respective coordinates of the location of a pointing device in a coordinate
system. More particularly, the presen... | 4 | [
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... | 15,833 | 15833 | |
uniform random variables
March 7th 2009, 08:19 AM #1
Banned
Joined
Feb 2009
Posts
17
uniform random variables
Let the variable be
Yc = theta_1 + theta_1*theta_2+ theta_1*theta_2 theta_3 + ....
where theta_i are i.i.d uniform random variables (i = 1,2,...) having
CDF such that F(x) = 0, x <=0... | 5 | [
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proving complex stuff
November 1st 2009, 11:14 PM
purebladeknight
proving complex stuff
if A+iB = (a.+ib.) (a,+ib,), prove (a.^2+b.^2) (a,^2 +b,^2 ) = (A^2 + B^2)
a. & b. is suppose to be subcript 1 and a, & b, is suppose to be subscript 2.
i dont see any short way of proving this, i have tried squaring... | 4 | [
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Induction and formulating equations
September 18th 2010, 11:32 PM #1
Newbie
Joined
Sep 2010
Posts
2
Induction and formulating equations
While browsing, I came across equations for finding the sums of certain series's, the first is (n²+n)/2 for "1+2+3...+n", the second is (1/6)n(n+1)(2n+1) for "1²+2²+3²..... | 4 | [
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Albert Einstein 1911-12, 1922-23
Several events related to Albert Einstein's life occurred in recent days and months. If you consider yourself a sort of Einstein fan, you may let me mention some of them.
First, you may finally buy Einstein's brain for $9.99 (or $13.99 now?), no strings or hair attached. See
Google Ne... | 4 | [
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HELP with some circles
September 28th 2008, 01:37 PM
pyrosilver
HELP with some circles
Find the center and the radius of the circle x^2 + y^2 - 2ax + 4by = 0.
----
Does every equation of the form x^2 + mx + y^2 + ny = p represent a circle? Explain.
September 28th 2008, 01:39 PM
Matt Westwood
Com... | 4 | [
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Unknown variables question
March 25th 2010, 11:09 AM
cassiuscoal
Unknown variables question
I have a math query relating to a calculation I'm required to do on a property auction website. Apologies if this is the incorrect forum but my understanding of different types of math is quite
lacking!
I have th... | 4 | [
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Fourier Coefficients
May 31st 2009, 11:08 AM #1
Junior Member
Joined
Apr 2009
Posts
39
Fourier Coefficients
Let (e_k) be an orthonormal sequence in a Hilbert space H, and let
M=span{e_k}. Show that for any x \in H we have x \in \overline{M}
\iff x can be represented by \sum_{k=1}^{\infty} \alpha_... | 5 | [
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bearings
October 16th 2007, 04:35 PM
cocoknny
bearings
An attendant in a lighthouse receives a request for aid from a stalled craft located 5 miles due east of the lighthouse. The attendant contacts a second boat located 14 miles from the lighthouse
on a bearing of N23degreesW. What is the distance and the b... | 4 | [
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9. What method I can use on this equation?
July 25th 2009, 11:03 PM #1
Junior Member
Joined
Jun 2009
Posts
29
9. What method I can use on this equation?
It is Seperation of Variable, Homogeneous Equation, Exact Equation or Linear Equation?
Question
$a^2(dy-dx) = x^2 dy + y^2 dx$ ; $a$ is constan... | 5 | [
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Research on Universal Combinatorial Coding
The Scientific World Journal
Volume 2014 (2014), Article ID 414613, 8 pages
http://dx.doi.org/10.1155/2014/414613
Research Article
Research on Universal Combinatorial Coding
^1College of Computer Science and Technology, Heilongjiang University, Harbin 150080, China
^2Key La... | 4 | [
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Re: Calculating The Median: Error Discovered in Oracle SQL 101 Code
Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
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Natural logs????
September 6th 2008, 10:53 PM #1
Newbie
Joined
May 2008
Posts
3
Natural logs????
How would you find the remainder when 27 to the power of 1001 is divided by 13? How would you find the remainder when 38 to the power of 101 is divided by 13? Finally, How would you show that 70
times 27 ... | 5 | [
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euler phi function and others
August 4th 2008, 01:16 PM #1
Newbie
Joined
Jul 2008
Posts
13
euler phi function and others
If the product of all positive divisors of n is n^2. Prove v(n) [the number of positive divisors function]=4
If n is congruent to k mod 40. Prove e^n is congruent to 2^k mod 55
... | 5 | [
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0.... | 15,846 | 15846 | |
backwards Normal distribution problem
April 5th 2008, 12:40 PM #1
backwards Normal distribution problem
I feel like I should be able to do this but I feel absolutely lost.
Assume that the weight, X, of male college students is normally distributed. Assume further that P(X <= 160) = 1/2 and P(X <= 140) = 1/4... | 4 | [
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Trigonometry Perpendicular line help!?
October 21st 2012, 12:50 PM
Benja303
Trigonometry Perpendicular line help!?
8. In a triange ABC, AB = 4.8cm, BC = 3.8 cm and A ^B C =42 degrees
P is the foot of the perpendicular from A to BC.
i. Calculate the area of triangle ABC
ii. Deduce the length of AP.... | 4 | [
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Logarithms
January 20th 2009, 04:19 PM #1
Newbie
Joined
Dec 2008
Posts
17
Can you help with the solution of this system for ( x, y ). Thanks.
log x ( base 9) + log 8 ( base y ) = 2
log 9 ( base x ) + log y ( base 8 ) = 8/3
sahip
Since you have different bases, you must use a change of... | 4 | [
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Linear Algebra Question.
June 26th 2008, 01:37 PM #1
Newbie
Joined
Jun 2008
Posts
24
Linear Algebra Question.
Let A and B be vector spaces, (which turn out to be real btw) that have ordered bases alpha=(a1,a2,a3) and beta = (b1,b2,b3,b4). The matrix T: A->B is: 2 9 7 4 5 7 9 4 3 2 8 3 work out the alpha
... | 4 | [
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Long division of polynomials
State the quotient and remainder (x3 - 3x + 1) / (x + 1) Please show any working out.
Code: x^2 - x - 2 + 3/(x+1) ______________________ x + 1 | x^3 + 0x^2 -3x + 1 x^3 + x^2 ------------- - x^2 - 3x - x^2 - x ---------- -2x + 1 -2x - 2 --------- 3 I think this site: Polynomial Long
Divisio... | 4 | [
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Physics Forums - View Single Post - Continuity of real portion of cosine variant of 3d fractals
By continuity I mean an unbroken fractal. With certain variants, one ends up with sharp gaps in the fractal.
[tex] mag=({x^2+y^2+z^2})^{n/2}[/tex]
[tex] yzmag=\sqrt{y^2+z^2}[/tex]
[tex] \theta= n *atan2 \;\;(x + i\;\;yzma... | 4 | [
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Differential equation
Because y itself does not appear in that equation, let z= dy/dx so the equation becomes $\frac{dz}{dx}- z^2+ 4= 0$. That's a very simple separable first order equation for z. Since z= dy/dx,
integrate to find y.
$\frac{dz}{dx} = z^2 - 4 = (z-2)(z+2) \Rightarrow \frac{dz}{(z-2)(z+2)} = dx$...
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Patente US7250739 - Method for estimating the rotor time constant of an induction machine
RELATED APPLICATION
The present application claims priority under 35 USC § 119 to European Patent Application No. 05104798.3, filed Jun. 2, 2005, the contents of which are hereby incorporated by reference in their
entirety.
BACK... | 4 | [
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Abelilan groups and subgroups
June 11th 2009, 07:31 PM #1
Junior Member
Joined
Aug 2008
Posts
44
Abelilan groups and subgroups
Let G be a group of order 2n and H a subgroup of G of order n. where n is and odd number. Moreover for all g in G-H and for all h in H we have ghg^-1 = h^-1.
Now Show that H... | 5 | [
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-0.00009918212890625,
0.0247802734375,
-0.06591796875,
-0.083984375,
0.059814453125,
-0.039794921875,
-0.052490234375,
-0.12158203125,
-0.034423828125,
0.0966796875,
-0.0216064453125,
0.0031433105468... | 15,855 | 15855 | |
A Challenging PDE question
August 29th 2011, 05:07 AM #1
Newbie
Joined
Aug 2011
Posts
3
A Challenging PDE question
Dear users of MHF, I've found two PDE question very challenging, would you guys mind to give some hints?
First question:
1) (-x) Ux + (2y) Uy = x^2 + y^2
a) find the character... | 5 | [
-0.009033203125,
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0.031005859375,
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0.10595703125,
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-0.00274658203125,
-0.006011962890625,
0.05517578125,
-0.032958984375,
-0.078125,
-0... | 15,856 | 15856 | |
How to differentiate x^(cosx) = y^(sinx) with respect to x
1. The problem statement, all variables and given/known data
Differentiate x^(cosx) = y ^(sinx) with respect to x
2. Relevant equations
3. The attempt at a solution
I tried using natural logs but im not sure if its correct, if it's wrong please point me to... | 4 | [
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-0.0230712890625,
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0.00830078125,
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0.050048828125,
-0.1416015625,
... | 15,857 | 15857 | |
Polynomial long division -- How does it work?
It's not clear what you mean when you say that the lower degree terms are ignored when doing long division, be it with numbers or polynomials.
The long division algorithm is a stepped process: it generally takes more than one step to complete the process of finding the quo... | 4 | [
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0.0146484375,
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... | 15,858 | 15858 | |
Patente US5433122 - Method of measuring the length of winding material running onto a winding beam
BACKGROUND OF THE INVENTION
The invention concerns a method for measuring the total length of winding material being wound onto a winding beam.
These types of methods are mainly known and in use with beaming and section... | 4 | [
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0.061279296875,
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-0.0301513671875,
-0.03881835... | 15,859 | 15859 | |
Math Help
November 11th 2006, 06:21 PM #1
Junior Member
Joined
Jul 2006
Posts
43
Ideal
Let R be any commutative ring and let a1,......,an be elements of R. We define
(a1,.....,an) to be the set {r1a1+...rnan for all i, ri in R}.
Prove that (a1,......,an) is an ideal of R. We call it the ideal ge... | 4 | [
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0.053466796875,
... | 15,860 | 15860 | |
Functional Analysis
April 8th 2010, 12:40 PM #1
Super Member
Joined
Apr 2009
From
México
Posts
721
Functional Analysis
Okay, what I'm trying to see is if $X, Y$ are Banach spaces and $(T_a) \subset \mathcal{B} (X,Y)$ is a net in the space of bounded operators such that $(T_ax)$ is a Cauchy net in $Y$... | 4 | [
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0.046142578125,
0.04052734375,
0.0380859375,
-0.072... | 15,861 | 15861 | |
Analog Sampling Basics
1. Bandwidth Definition and Calculations
Bandwidth is defined as the measure of a circuit or transmission channel to pass a signal without significant attenuation over a range of frequencies. Bandwidth is measured between the lower and
upper frequency points where the signal amplitude falls to ... | 5 | [
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-0.0050... | 15,862 | 15862 | |
Patent US6744174 - Frequency sensitivity analysis and optimum design for MEMS resonator
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit under 35 U.S.C. §119(e) of the following co-pending and commonly-assigned U.S. Provisional Patent Application Serial No. 60/281,517, entitled “FREQUENCY
SEN... | 4 | [
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0.052978515625... | 15,863 | 15863 | |
- Find the determinant of a 5 X 5 matrix -
1. The problem statement, all variables and given/known data
Find the determinant of the matrix.
A = [tex]\left[\begin{array}{ccccc}
1 & 2 & 3 & 4 & 5 \\
3 & 0 & 4 & 5 & 6 \\
2 & 1 & 2 & 3 & 4 \\
0 & 0 & 0 & 6 & 5 \\
0 & 0 & 0 & 5 & 6
\end{array}\right][/tex]
2. Relevant ... | 5 | [
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0.0... | 15,864 | 15864 | |
anyone help???
i have 6.644 = -ln[ln(T/T-1)] and i need to find a value of t
You're looking for t or T? (This isn't really as stupid a question as it sounds. Technically they are different variables, though here the meaning is clear enough.) $6.644 = -ln \left [ ln \left ( \
frac{T}{T-1} \right ) \right ]$ $-6.644 = l... | 5 | [
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-0.024... | 15,865 | 15865 | |
finding derivative dy / dx
October 21st 2009, 11:12 AM #1
Member
Joined
Oct 2009
Posts
175
finding derivative dy / dx
Hi guys it's me first post here and have a strange problem with finding the derivative of :
y = (x^2 + 2x^3/2 - 5x^1/2) divided by x^1/2
The solutions ends up with x^3/2 + 2x - ... | 4 | [
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-0.01446533203125,
-0.... | 15,866 | 15866 | |
Poisson and Geometric Random Variable questions
April 27th 2011, 07:30 AM #1
Newbie
Joined
Apr 2011
Posts
5
Poisson and Geometric Random Variable questions
Hi all,
Can anyone tell me if I got the correct answers for the below two questions? Any help is appreciated.
Q:Let X have a Poisson distri... | 5 | [
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0.004150390625,
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-0.04541015625,
-0.1220703125,
... | 15,867 | 15867 | |
[SOLVED] Finding polynomials from a diagram...
August 2nd 2009, 01:31 PM #1
Junior Member
Joined
Aug 2009
Posts
29
[SOLVED] Finding polynomials from a diagram...
Find polynomials p(x) and q(x) such that f(x) = p(x)/q(x) has vertical asymptotes x=-2, x=5, horizontal asymptote y=1 and f(-1) = f(4)=0.
... | 4 | [
-0.060546875,
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-0.0128173828125,
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0.041748046875,
0.134765625,
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0.055908203125,
-0.02197265625,
... | 15,868 | 15868 | |
Challenging Einstein - A Review and Comments on Pari Spolter's Mathematical and Scientific Forensic
Rev.10
by John Lear
Einstein w... | 4 | [
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0.059082031... | 15,869 | 15869 | |
tion
2D-9 : Relative Humidity, Partial Pressure and Mole and Mass Fractions 6 pts
Determine the masses of dry air (BDA) and water vapor contained in a 240 m3 room at 98 kPa, 23°C and 50% relative humidity. Calculate ... | 5 | [
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0.0654296875,
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0.061279296875,
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... | 15,870 | 15870 | |
Patent US5990834 - Radar angle determination with music direction finding
TECHNICAL FIELD
The present invention relates to apparatus and methods for determining the angle of arrival of signals received by lower-frequency (below microwave) radars from multiple sources, and more
specifically, to a method which utilizes ... | 4 | [
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0.00436401367... | 15,871 | 15871 | |
A Statistical Method for Synthesizing Meta-Analyses
Computational and Mathematical Methods in Medicine
Volume 2013 (2013), Article ID 732989, 9 pages
http://dx.doi.org/10.1155/2013/732989
Research Article
A Statistical Method for Synthesizing Meta-Analyses
^1Department of Statistics, George Mason University, Fairfax... | 5 | [
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0.019... | 15,872 | 15872 | |
Vector calc minimum problem
February 21st 2009, 06:34 PM #1
Member
Joined
Oct 2007
Posts
159
Vector calc minimum problem
I am given that the summation from i = 1 to 3 = 1
I am to find x sub 1, xsub2, xsub3 so that the summation from i = 1 to 3 of x sub i ^2 is at a minimum. Then I am suppose to come ... | 5 | [
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0.0... | 15,873 | 15873 | |
Proving Polynomials Take On Composite Values
May 14th 2010, 03:39 AM
1337h4x
Proving Polynomials Take On Composite Values
Hello all,
I was reading on the internet about this but I cannot seem to find a proof.
Let f(x)=ax^2 + bx + c be a non-constant polynomial, and assume that a, b, and c are integers.... | 4 | [
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-0.0361328125,
0.00103759765625,
0.0093... | 15,874 | 15874 | |
S12 Conjugate Elements
February 22nd 2009, 03:23 PM
d_p_osters
S12 Conjugate Elements
I'm trying to find the number of elements conjugate to (12)(34)(56789) in S12 but don't know how to go about it.
Any help is much appreciated.
February 22nd 2009, 06:36 PM
ThePerfectHacker
Quote:
First we form... | 5 | [
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-0.02502441... | 15,875 | 15875 | |
Patent US4268171 - Method determining concentration in rate nephelometric immunochemical analysis
This is a continuation, of application Ser. No. 816,414, filed July 18, 1977 now abandon.
BACKGROUND OF THE INVENTION
The present invention relates to immunochemical analysis techniques and more particularly to rate neph... | 4 | [
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0.0517578125,
0.0167236328125,
-0.0081787... | 15,876 | 15876 | |
GMAT Quant: Roots
Master these seemingly intimidating mathematical symbols!
Practice Questions
First, try these practice questions.
1) The numbers a, b, and c are all non-zero integers. Is a > 0?
Statement #1:
Statement #2:
2) The numbers a, b, and c are all non-zero integers. Is a > 0?
Statement #1:
Statement ... | 4 | [
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-0.029052734375,
0.041015625,
-0.0771484375,
0.0229492187... | 15,877 | 15877 | |
Fourier Transform
Radarithm
I am unable to understand how this:
http://gyazo.com/5c78dc5774850d609ce200efa446cfbf
and this:
http://gyazo.com/f182937cb662f5e2241bea977f2929ea
are equal, and how the Fourier transform is done. I do however understand what the Fourier transform is: A way to break down a certain wave... | 4 | [
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-0.010192... | 15,878 | 15878 | |
xyz^2=5 shortest distance
May 26th 2008, 12:45 PM
flgator11
xyz^2=5 shortest distance
Given the surface xyz^2=5. Prove that on this surface there exists a point closest to the origin, and find that point.
Justify your solution.
Thanks alot!
May 26th 2008, 01:43 PM
galactus
You could try a LaGran... | 5 | [
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0.07861328125,
-0.043212890625,
-0.0461... | 15,879 | 15879 | |
Probability Density Function Question
December 3rd 2011, 08:52 AM #1
Member
Joined
Nov 2010
Posts
164
Probability Density Function Question
If someone could review my work on this exercise
When I use f X(x) is the pdf of X and fY(y) is the pdf of Y.
Consider X a random variable with pdf
f ... | 5 | [
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... | 15,880 | 15880 | |
Inner products
October 4th 2007, 02:16 AM
Jacko
Inner products
We define: <u,v>=u2v2+u3v3
For vectors u=(u1,u2,u3) and v=(v1,v2,v3) in R3.
Explain the reasons why this is not an inner product on R3.
I have completed the 4 axioms as below:
1. <u,v>= u2v3 + u3v3
=v2u2 + v3u3
=<v,u>
2... | 4 | [
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-0.01214599609375,
... | 15,881 | 15881 | |
Patent US7196648 - Non-integer decimation using cascaded intergrator-comb filter
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to decimation filters and more particularly, it relates to an improved non-integer CIC decimation filter which realizes non-integer decimation by util... | 4 | [
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0.04248046875,
0.07128906... | 15,882 | 15882 | |
Solve differential equation using "Power Series"
July 23rd 2010, 08:27 AM
EmilyL
Solve differential equation using "Power Series"
How can I solve the following differential equation using power series?
(1 – x^2)y'' – 6xy' – 4y = 0
I know there are other ways to solve this, but I specifically need to kn... | 5 | [
-0.09130859375,
0.0086669921875,
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Quadratic Polynomial
Find the quadratic polynomial whose graph passes through the points (0,0) (-1,1) and (1,1).
I used solved the linear system 0 = f(0) = $a_3$ 1 = f(-1) = $a_2 - a_1 + a_0$ 1 = f(1) = $a_2 + a_1 + a_0$. Then i looked at the question, the points and slapped my self on my forehead and erased
all my wo... | 4 | [
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-0.05200... | 15,884 | 15884 | |
Not isomorphic
October 22nd 2012, 09:31 PM #1
Super Member
Joined
Feb 2008
Posts
535
Not isomorphic
Show that R is NOT isomorphic to R*. (R is real numbers and R* is the group of nonzero reals under multiplication)
Can someone show this. I can't even get started...
Thanks.
Re: Not isomorphic
... | 5 | [
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Subspace Top (understanding a problem in the book)
September 23rd 2011, 06:41 PM
dwsmith
Subspace Top (understanding a problem in the book)
I think I understand this example from the book. I just need to verify.
Let $I=[0,1]$. The dictionary order on $I\times I$ is just the restriction to $I\times I$ of the... | 4 | [
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Cyclic Trapezoid
Date: 01/17/2002 at 03:12:13
From: varghese
Subject: Circles
PQ is a diameter; AB is a chord parallel to PQ. If PQ=50cm and AB=
14cm, find PB.
I used the similarity of triangles, i.e. triangle AOB and triangle POQ
are similar:
PQ/AB = 50/14 = 25/7 = PO/OB .
PO+OB = PB
PB = 25+7 = 32
I am... | 4 | [
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Equation of Line Through C & Midpoint
October 28th 2013, 06:07 PM #1
Equation of Line Through C & Midpoint
Let A(1,2), B(6,1) and C(7,8) be three points in the plane. Find the equation of the line passing through point C and through the midpoint of the line segment AB. Write answer in the form
ax + by + c = 0... | 4 | [
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Proposition 2
If two numbers multiplied by one another make a square number, then they are similar plane numbers.
Let A and B be two numbers, and let A multiplied by B make the square number C.
I say that A and B are similar plane numbers.
Multiply A by itself to make D. Then D is square.
Now, since A multiplied b... | 4 | [
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differentiating in the integral sign
December 19th 2008, 07:52 PM #1
differentiating in the integral sign
I am sure most of you are familiar with what is known as Feynman integration.
For those who are not, it allows us to integrate otherwise difficult integrals. Ones we would use
contour integration on... | 5 | [
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Sculpture Based on Propellorized Polyhedra
This is a webified version of a paper in the Proceedings of
MOSAIC 2000, Seattle, Washington, August 2000, pp. 61-70.
... | 4 | [
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Factorising Cubic Equations
The "rational root theorem", that LogicalTime mentions, says that if m/n is a rational number root of [itex]a_px^p+ a_{p-1}x^{p-1}+ \cdot\cdot\cdot+ a_0= 0[/itex] then the numerator m must divide
[itex]a_0[/itex] and and n must divide [itex]a_p[/itex].
In your example, [itex] -x^3 +10x^2 - ... | 4 | [
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3 calculus word problems - integrals, derivatives
January 14th 2009, 05:57 PM #1
Junior Member
Joined
Nov 2008
From
Vermont, New England, USA, North America, Earth, Sol Solar System, Orion Arm, Milky Way Galaxy
Posts
61
3 calculus word problems - integrals, derivatives
So we came back from christmas ... | 5 | [
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confidence limits
January 13th 2007, 04:17 AM
dadon
confidence limits
hey!
I was wondering if anyone knew anything about 95% confidence limits from a 't' distribution?
..and if it is possible an example.
thanks.
dadon
January 13th 2007, 05:26 AM
CaptainBlack
Quote:
The Wikipedia... | 5 | [
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How close?
January 21st 2010, 11:57 PM #1
Member
Joined
Sep 2009
Posts
181
How close?
Hello,
Can you please help me figure this out?
Problem: How close to -3 do we have to take x so that
$1/(x+3)^4 > 10,000$
$(x+3)^4$ is non-negative, so we can just move some stuff around:
$\fra... | 4 | [
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solving
July 17th 2009, 09:35 AM
william
solving
Solve for x, x є R using algebraic methods. Use a table to show your results.
x^3 – 2x^2 – x + 2 > 0
July 17th 2009, 09:44 AM
skeeter
Quote:
factor by grouping ...
$x^3 - 2x^2 - x + 2 > 0$
$x^2(x - 2) - (x - 2) > 0$
$(x - 2)(x^2 - 1... | 4 | [
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search results
Expand all Collapse all Results 1 - 2 of 2
1. CJM 2004 (vol 56 pp. 926)
K-Homology of the Rotation Algebras $A_{\theta}$
We study the K-homology of the rotation algebras $A_{\theta}$ using the six-term cyclic sequence for the K-homology of a crossed product by ${\bf Z}$. In the case that $\the... | 4 | [
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Displacement and velocity
February 23rd 2013, 10:23 PM
Steelers72
Displacement and velocity
Suppose that the velocity (in meters per second) for a particle moving along a line is given by the function v(t)=t^2-4t-12 on interval 1<t<7
a) Find the displacement
b) find the displacement traveled by the part... | 5 | [
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Is this inequality true and provable?
Assuming [tex] a \leq b [/tex] and f is continuous on the interval [a,b], then
[tex] \left|\int_a^bf\left(x\right)dx \right| \leq \int_a^b\left|f(x)\right|dx[/tex]
which follows from the fact that [tex] f(x) \leq \left|f(x)\right| [/tex] and [tex] -f(x) \leq \left|f(x)\right| [/t... | 4 | [
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