content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Radial Basis Functional Link Network and Hamilton Jacobi
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 568796, 10 pages
http://dx.doi.org/10.1155/2012/568796
Research Article
Radial Basis Functional Link Network and Hamilton Jacobi Issacs for Force/Position Control in Robotic Manipulation
^1Ins... | 4 | [
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0.0252685... | 29,400 | 29400 | |
Optimal Design and Development of a Decoupled A/B-Axis Tool Head with Parallel Kinematics
Advances in Mechanical Engineering
Volume 2010 (2010), Article ID 474602, 14 pages
http://dx.doi.org/10.1155/2010/474602
Research Article
Optimal Design and Development of a Decoupled A/B-Axis Tool Head with Parallel Kinematics
... | 4 | [
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0.033691... | 29,401 | 29401 | |
Irreducible polynomials
Is there a formula for quickly calculating the number of irreducible polynomials of degree $n$ over $Z_2$?
Ah right, I forgot out that. I might have a couple more questions about irreducible polynomials, however I think I should be able to solve most of it myself (just wish I hadn't sold my tex... | 5 | [
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0.03369140625,
-0.0673828125,
-0.018... | 29,402 | 29402 | |
On Robe's Circular Restricted Problem of Three Variable Mass Bodies
Journal of Astrophysics
Volume 2013 (2013), Article ID 898794, 11 pages
http://dx.doi.org/10.1155/2013/898794
Research Article
On Robe's Circular Restricted Problem of Three Variable Mass Bodies
^1Department of Mathematics, Faculty of Science, Ahmad... | 4 | [
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rank and nullity
January 26th 2011, 07:32 PM
Taurus3
rank and nullity
Compute the rank and nullity of the matrix A and state what this implies about the existence and/or uniqueness of solutions x of Ax=b.
A = [1 1 3]
1 2 3
3 2 1
Sol: Reduced row echelon form = [1 0 -1]
0 1 2
0 0 0
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Posts by
Posts by Bob
Total # Posts: 2,412
Physics
Forgot to put my question at the end of it XD This is from me trying to interpret what you've done in the previous times this question has been asked, but obviously, I'm wrong somewhere. At what
point in the work am I messing up?
Physics
Let me try to clarify v1=22... | 5 | [
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Trig question pre calc!
October 26th 2013, 02:13 AM #1
Junior Member
Joined
Mar 2013
From
Vancouver
Posts
60
Trig question pre calc!
Hi there, the question states
Prove algebraically: $\cos\theta/1-sin\theta$ = $sec\theta +(sec\theta)(csc\theta)-cot\theta$
Here are the steps i took to solvi... | 4 | [
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integration theorem!
June 29th 2013, 02:23 AM #1
Member
Joined
Jul 2011
Posts
93
integration theorem!
i need some help or understanding or a book or material that explains this type of problem
find the value of
$\int_{0.3}^{2.6} x^3 d(x + [x] )$
thanks
Re: integration theorem!
That i... | 4 | [
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Need Help Simplifying trig expression
December 4th 2006, 04:17 PM #1
Member
Joined
Nov 2006
From
chicago
Posts
156
Well first off I am not the best simplifier, yet i still am managable, but now with the whole trig function ordeal and it makes it twice as hard.
Could someone please show me step b... | 4 | [
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The Extreme and Support Points of a New Class of Analytic Functions with Positive Real Part
Journal of Complex Analysis
Volume 2013 (2013), Article ID 407529, 4 pages
http://dx.doi.org/10.1155/2013/407529
Research Article
The Extreme and Support Points of a New Class of Analytic Functions with Positive Real Part
Fac... | 5 | [
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the encyclopedic entry of hyperbolic paraboloid
In mathematics, a paraboloid is a quadric surface of special kind. There are two kinds of paraboloids: elliptic and hyperbolic. The elliptic paraboloid is shaped like an oval cup and can have a
maximum or minimum point. In a suitable coordinate system, it can be represent... | 4 | [
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Kinematics graph help!
December 12th 2008, 11:41 PM #1
Newbie
Joined
Dec 2008
Posts
4
Kinematics graph help!
Generally, these are easy to figure out... but this one is really awkward.
As you can see, the speed is in km/h and the time is 25 min, and the graph itsself is very awkward :/
If anyone ... | 4 | [
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using Leibniz Rule
January 4th 2011, 12:05 AM #1
Senior Member
Joined
Nov 2010
From
Hong Kong
Posts
255
using Leibniz Rule
Question. A function is defined by:
$f(t)=\int^t_{\frac{1}{t}}\frac{\sqrt{1+t^2x^2}}{x} dx$.
Find $f\prime(t)$ and show that $f\prime(\sqrt{2})=\frac{13\sqrt{10}-2}{6}$... | 5 | [
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Gap Structure and Gapless Structure in Fractional Quantum Hall Effect
Advances in Condensed Matter Physics
Volume 2012 (2012), Article ID 281371, 13 pages
http://dx.doi.org/10.1155/2012/281371
Research Article
Gap Structure and Gapless Structure in Fractional Quantum Hall Effect
KYOKUGEN (Center for Quantum Science ... | 4 | [
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Partial fraction
August 17th 2011, 07:53 AM #1
Partial fraction
find the values of A,B and C such that
i see that it is repeated linear, but the x^2+4 is confusing me.
Re: Partial fraction
Write
$\frac{2x-3}{(x+1)(x^2+4)}=\frac{A(x^2+4)+(Bx+C)(x+1)}{(x+1) (x^2+4)}$
and identify numerators.
... | 4 | [
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Finding circle coordinates given center, radius and x value only.
July 22nd 2010, 10:15 AM
stillblazin
Finding circle coordinates given center, radius and x value only.
Center is at 0,1044 why 1044? because of pixels.
radius is also 1044.
Please take a look at my picture now.
I want to find the co... | 4 | [
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limits help please!!!
October 1st 2012, 04:58 PM #1
Junior Member
Joined
Sep 2012
From
New York
Posts
54
limits help please!!!
i don't know how to prove the following limits
limit of ( 1 - cos x) / x^2 when x is +infinity
limit of (tan4x) / 6 when x is 0
limit of (sin x^2) / x
in ... | 5 | [
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Cartesan equation to parametric and vector form
March 25th 2009, 04:20 PM #1
Member
Joined
Oct 2007
Posts
134
Cartesan equation to parametric and vector form
Please check and please explain if it is incorrect, even if it is correct. have a very vague understanding of it. Thank you.
Convert the follo... | 4 | [
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A Superlinearly Convergent Method for the Generalized Complementarity Problem over a Polyhedral Cone
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 671402, 6 pages
http://dx.doi.org/10.1155/2013/671402
Research Article
A Superlinearly Convergent Method for the Generalized Complementarity Problem over a... | 4 | [
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probability of success
February 18th 2009, 06:17 AM #1
Newbie
Joined
Feb 2009
Posts
7
probability of success
I am trying to answer this problem for an exam.Can anyone please help me.I wonder if I should be using the formula prob=nCr (p^r) q^(n-r).
The probability for students from a certain universi... | 4 | [
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Help with a few questions
September 24th 2012, 06:45 AM
MastersMath12
Help with a few questions
1) Which of the following are subspaces of R3
a) T = {(x1, x2, x3) | x1x2x3 = 0}
b) T = {(x1, x2, x3) | x1 - x3 = 0}
c) T = {(x1, x2, x3) | x1 = 0}
d) T = {(x1, x2, x3) | x1 = 1}
2) Let U be a k-... | 5 | [
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Pyramid's height
December 3rd 2010, 05:50 AM #1
Junior Member
Joined
Nov 2009
Posts
30
Hi!
Today found this task:
A pyramid has parallelogram at its bottom, the surface area of it is 360 cm^2, but the area of pyramids surface (without the parallelogram) is 768 cm^2. Edges or parallelogram is 20 an... | 4 | [
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How to Solve Quadratic Equations in the Form ax2 + bx + c = 0 with Trinomial factorisation
In this short post I wish to explain how to solve simple quadratic equations with Trinomial factorisation
To solve a quadratic equation in this form there are two main methods you can use to solve these either trinomial (also kn... | 4 | [
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Solve iz + z = 0
June 15th 2011, 08:54 PM
madbandlt
Solve iz + z = 0
Hey guys, quick question
(b) Find all complex solutions of iz + z = 0 and sketch them in the complex plane.
Well I let z = x + iy, simplified and obtained x - y + i(x - y) = 0
But as for sketching them I'm not entirely sure how t... | 4 | [
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-0.1044921... | 29,423 | 29423 | |
I have two questions I'm stuck on.
July 22nd 2009, 02:54 AM #1
Newbie
Joined
Jul 2009
Posts
4
I have two questions I'm stuck on.
An object made entirely from one material has a volume of 30m(3). It floats in a liquid of density 3g/cm(3) with only half its mass below the liquid's surface. The object is th... | 4 | [
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Homotopy Extension Property in Homotopy Theory for Topological Semigroups
ISRN Geometry
Volume 2012 (2012), Article ID 359403, 9 pages
http://dx.doi.org/10.5402/2012/359403
Research Article
Homotopy Extension Property in Homotopy Theory for Topological Semigroups
Department of Mathematics and Institute for Mathemati... | 5 | [
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Darboux Sums, Upper/Lower integral
May 3rd 2010, 04:24 PM
serious331
Darboux Sums, Upper/Lower integral
If the function $f : [a,b] \rightarrow R$ is bounded and that $P = \{\{x_0\},.....,\{x_n\}\}$ is a partition of its domain [a,b]. For each index $i \geq 1$ we have:
${m_i} \equiv \mbox{inf} \{f(x) | x \in... | 5 | [
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12. Arc Length of a Curve in Parametric or Polar Coordinates
by M. Bourne
Arc Length of a Curve which is in Parametric Coordinates
We'll first look at an example then develop the formula for the general case.
Example 1 - Race Track
In the Curvilinear Motion section, we had an example where a race car was travellin... | 5 | [
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0.0238037109375,
0.0966796875,
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0.0517578125,
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-... | 29,427 | 29427 | |
Effective Interest Rates
Page 1 of 7 Follow
... | 4 | [
0.0615234375,
0.003753662109375,
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Physics Forums - View Single Post - Another Thermo Question
eaboujaoudeh
for isentropic expansion and compression in ICEs we use the same principle u used to find the first 2 works.
we use : W= (PoVo-PoVo/4)/(1-k) k=Cp/Cv. for isentropic adiabatic compression or expansion.
Where do you get this? It works for BC bu... | 4 | [
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3. The Derivative from First Principles
In this section, we will differentiate a function from "first principles". This means we will start from scratch and use algebra to find a general expression for the slope of a curve, at any value x.
First principles is also known as "delta method", since many texts use Δx (for... | 4 | [
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0... | 29,430 | 29430 | |
Finding a Derivative of a Function
May 28th 2009, 08:55 PM
jimmyp
Finding a Derivative of a Function
Hello again,
I'm again having some trouble using rules to solve down for a derivative of a function. Could someone please show me how I'd find the derivative of
$y=(\frac{4x^2}{3-x})^3$
That would... | 5 | [
-0.0155029296875,
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... | 29,431 | 29431 | |
Simple and Compound Interest
The time value of money application
The time value of money application built into the HP 17bII+ is used to solve compound interest problems and annuities that involve regular, uniform payments. This application is accessed from the
main menu level of the HP 17bII+ by pressing
then
.... | 4 | [
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the encyclopedic entry of fictitious force
Animation: ball that rolls off a cliff
Note: The rain frame perspective here, rather than being that of a raindrop, is more like that of a trampoline jumper whose trajectory tops out just as ... | 4 | [
-0.08349609375,
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0.03027... | 29,433 | 29433 | |
Proof using the Intermediate Value Theorem
October 11th 2006, 05:16 PM #1
gmencl
Guest
Proof using the Intermediate Value Theorem
A fixed point of a function f is a number c in its domain such that f(c) = c. (the function doesn't move the input value c; it stays fixed.) Suppose that f is a continuous function wit... | 5 | [
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Drug Absorption
September 4th 2009, 08:09 AM #1
Junior Member
Joined
Aug 2009
Posts
26
Drug Absorption
A drug is administered intravenously for pain. The function
f(t)=90 - 52 ln (1 + t), 0<t<4 gives the number of units of the drug in the body after t hours.
a. What was the initial number of uni... | 4 | [
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... | 29,435 | 29435 | |
Revista Brasileira de Ensino de Física
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Print version ISSN 1806-1117
Rev. Bras. Ensino Fís. vol.34 no.1 São Paulo Jan./Mar. 2012
http://dx.doi.org/10.1590/S1806-11172012000100005
... | 5 | [
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Particle-Filter-Based WiFi-Aided Reduced Inertial Sensors Navigation System for Indoor and GPS-Denied Environments
International Journal of Navigation and Observation
Volume 2012 (2012), Article ID 753206, 12 pages
http://dx.doi.org/10.1155/2012/753206
Research Article
Particle-Filter-Based WiFi-Aided Reduced Inertia... | 4 | [
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0.00071334838... | 29,437 | 29437 | |
matrix inverse
May 20th 2008, 08:12 PM #1
Newbie
Joined
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Posts
2
Find the inverse of the given matrix
[2 4 3]
[3 -4 -4]
[5 0 -1]
Can you please teach me the steps of sloving the inverse of this matrix? Thank you very much.
Which methods have you learned in class? You can per... | 4 | [
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0.08154296875,
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-0.032714843... | 29,438 | 29438 | |
Unbounded sequence
September 5th 2008, 07:46 AM #1
Super Member
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705
Thanks
2
Unbounded sequence
Let $x_{1} =1$, and let $x_{n+1} =\frac {(x_1 +x_2 + . . . + x_{n} ) }{2}$. Prove that $x_n \rightarrow \infty$
So far:
I have proved that $x_n$ is a strictly decreasing seq... | 5 | [
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... | 29,439 | 29439 | |
Pricing Equity-Indexed Annuities under Stochastic Interest Rates Using Copulas
Journal of Probability and Statistics
Volume 2010 (2010), Article ID 726389, 29 pages
http://dx.doi.org/10.1155/2010/726389
Research Article
Pricing Equity-Indexed Annuities under Stochastic Interest Rates Using Copulas
Department of Math... | 4 | [
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0.030395... | 29,440 | 29440 | |
Is x > 0? (1) |x + 3| = 4x – 3 (2) |x – 3| = |2x – 3|
Author Message
TAGS:
Re: [tricky one] Is x > 0? [#permalink] 04 Jun 2013, 07:42
Expert's post
... | 4 | [
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0.018920898... | 29,441 | 29441 | |
m having hard time solving this, i keep getting the same answer over and over
the integral of sin^2 4θ dθ from -pi/4 to pi/4
Did you try the identity $\sin^2(x) = \frac{1 - \cos(2x)}{2}$
yes i did, and i got 0.785398 but my teacher says type your answer using pi
In this case, your teacher wants an exact answer. Solv... | 5 | [
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-... | 29,442 | 29442 | |
[SOLVED] definite integral
May 9th 2008, 10:44 PM #1
Newbie
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2
[SOLVED] definite integral
Hey,
This is actually a high school maths question but we're doing calculus so...?
okay, well this is what my maths question says:
From other sources, find the integral function of... | 5 | [
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0.01... | 29,443 | 29443 | |
Math Help
November 4th 2006, 02:56 PM #1
Newbie
Joined
Nov 2006
Posts
3
Set proof
My teacher gave me this to prove, could someone help me prove it? Thanks.
Proposition: {4m + 1 : m e Z} c {2n - 1 : n e Z}
e = element
c = subset
Z = set of all integers
Sorry if its a little hard to... | 4 | [
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0.0037841796875,
... | 29,444 | 29444 | |
When Does An Inverse Function Exist?
August 25th 2009, 10:36 AM #1
Junior Member
Joined
Aug 2009
Posts
62
I have understood that an inverse of a function exists when the relation is one to one. It is clear to understand when the function is a whole number. But how do you apply that rule to an
equation... | 4 | [
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-0.0554199... | 29,445 | 29445 | |
Multiattribute Response of Maize Genotypes Tested in Different Coastal Regions of Brazil
International Journal of Agronomy
Volume 2011 (2011), Article ID 215843, 6 pages
http://dx.doi.org/10.1155/2011/215843
Research Article
Multiattribute Response of Maize Genotypes Tested in Different Coastal Regions of Brazil
^1F... | 4 | [
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-0.095703125,
0.... | 29,446 | 29446 | |
Convergent, divergent or definitely divergent?
June 6th 2010, 04:59 PM #1
Newbie
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Jan 2010
Posts
17
Convergent, divergent or definitely divergent?
Hi,
can someone please explain to me how to find out if a set is convergent, divergent, or definitely divergent. I've seen the test to do in a textb... | 4 | [
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-0.0018157... | 29,447 | 29447 | |
Martelli Chaotic Properties of a Generalized Form of Zadeh’s Extension Principle
Journal of Applied Mathematics
Volume 2014 (2014), Article ID 956467, 6 pages
http://dx.doi.org/10.1155/2014/956467
Research Article
Martelli Chaotic Properties of a Generalized Form of Zadeh’s Extension Principle
^1College of Computer... | 5 | [
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-0.00156402587890625,
-0.07568359375,
-0.032958984375,
-0.04541015625,
0.01434326... | 29,448 | 29448 | |
Uncertainty Quantification in Simulations of Epidemics Using Polynomial Chaos
Computational and Mathematical Methods in Medicine
Volume 2012 (2012), Article ID 742086, 8 pages
http://dx.doi.org/10.1155/2012/742086
Research Article
Uncertainty Quantification in Simulations of Epidemics Using Polynomial Chaos
^1Depart... | 4 | [
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-0.... | 29,449 | 29449 | |
EDP19 -- removing some vagueness
EDP19 — removing some vagueness
In the comments on EDP18 we are considering a certain decomposition problem that can be understood in its own right. At various points I have asserted that if we can find a decomposition of a
particular kind then we will have a positive solution to EDP. ... | 4 | [
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0.019287109375... | 29,450 | 29450 | |
An Autocorrelation Term Method for Curve Fitting
ISRN Applied Mathematics
Volume 2013 (2013), Article ID 346230, 4 pages
http://dx.doi.org/10.1155/2013/346230
Research Article
An Autocorrelation Term Method for Curve Fitting
The Louisiana Accelerator Center, The University of Louisiana at Lafayette, Lafayette, LA 70... | 5 | [
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0.04272460... | 29,451 | 29451 | |
Linear Algebra help Matrix
February 19th 2013, 11:53 AM #1
Super Member
Joined
Sep 2008
Posts
607
Linear Algebra help Matrix
A dietitian is planning a meal containing 14 units of iron, 12 units of carbohy-
drates and 50 units of protein. Five ingredients are available. One portion of
each ingredi... | 5 | [
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-0.020019531... | 29,452 | 29452 | |
A cylindrical tank of radius R and height H must be redesign
Author Message
TAGS:
A cylindrical tank of radius R and height H must be redesign [#permalink] 24 Oct 2011, 21:17
... | 4 | [
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-0.0432128... | 29,453 | 29453 | |
Buoyancy Pressure
June 6th 2008, 11:06 AM #1
Newbie
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Buoyancy Pressure
Hi,
I am looking to work out the buoyancy pressure of an object of mass 2kg when held in a tank of tap water at a depth of 300mm (final answer in mmHg). Using Archimedes, I have that the buoyancy
force ... | 4 | [
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0.046875,
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0.0164794... | 29,454 | 29454 | |
Worded problem - getting and solving the equations.
April 27th 2010, 01:34 PM #1
Newbie
Joined
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Worded problem - getting and solving the equations.
the difference between two positive numbers is 4. If twice the square of the larger number is added three times the smaller, the sum 53.. Whi... | 4 | [
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versão impressa ISSN 0100-0683
Rev. Bras. Ciênc. Solo vol.36 no.3 Viçosa maio/jun. 2012
http://dx.doi.org/10.1590/S0100-06832012000300031
... | 4 | [
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-0.08349609375,
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0.006011962890625,
-0.0177001953125,
-0.019775390625,
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0.018798828125,
-0.0233154296875,
-0.0162353515625,
-0.060546875,
-0.0098... | 29,456 | 29456 | |
Polys / Complex numbers
December 1st 2007, 01:21 PM #1
Newbie
Joined
Dec 2007
Posts
6
Polys / Complex numbers
Hello everybody,
I have some problems to do and could use some help. It's all about polynomials and complex numbers, and I basically just started the topic and don't have too much of a clue ... | 5 | [
-0.1064453125,
0.0966796875,
0.00885009765625,
-0.0035552978515625,
-0.04931640625,
-0.01129150390625,
0.0118408203125,
0.03955078125,
-0.0419921875,
-0.0859375,
-0.0361328125,
-0.09423828125,
0.08349609375,
0.058837890625,
-0.0019378662109375,
0.0556640625,
-0.00811767578125,
-0.0... | 29,457 | 29457 | |
Covering space
December 1st 2011, 02:19 PM #1
Junior Member
Joined
Sep 2011
Posts
31
Covering space
Give an explicit description of the covering space of the torus $T^{2}$ corresponding to the subgroup of $\mathbb{Z}\times\mathbb{Z}$ generated by $(n,0), n>0$.
Re: Covering space
You know that the u... | 4 | [
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-0.05810546875,
0.00531005859375,
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0.0751953125,
0.01153564453125,
-0.072265625,
-0.01953125,
-0.06396484375,
-0.033203125,
-0.01202392578125,
-0.091796875,
-0... | 29,458 | 29458 | |
Estimating the sum of a series
July 6th 2008, 09:29 PM
auslmar
Estimating the sum of a series
Hello once again,
I have this problem that wants me to estimate the sum of a given series within 0.0001.
"Consider the series $\sum_{k=1}^{\infty}\frac{{4(-1)^k}}{(3^k)*k!}$. Estimate the sum of the series wit... | 5 | [
-0.0277099609375,
-0.07421875,
-0.07080078125,
0.0625,
-0.0625,
-0.091796875,
0.026611328125,
-0.0140380859375,
0.0279541015625,
0.037353515625,
-0.043212890625,
-0.11669921875,
0.0380859375,
-0.006256103515625,
-0.09765625,
0.0205078125,
0.05126953125,
-0.057373046875,
0.0727539... | 29,459 | 29459 | |
Solving the system of two equations in two unknowns
April 12th 2012, 04:45 PM #1
Newbie
Joined
Mar 2012
From
USA
Posts
4
Solving the system of two equations in two unknowns
I'm going through these tutorials for Calc III, and I came upon this slide:
main-22.pdf
source:MATH 311 - Calculus III... | 4 | [
-0.1826171875,
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0.07470703125,
0.00213623046875,
0.06396484375,
0.0283203125,
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0.09228515625,
-0.0576171875,
-0.052490234375,
-0.01275634765625,
-0.015869140625,
-0.05... | 29,460 | 29460 | |
estimator of theta
March 11th 2010, 12:04 PM #1
Newbie
Joined
Dec 2009
Posts
10
estimator of theta
If X1, X2.......,Xn constitute a random sample of size n from an exponential population, show that "X bar" is a sufficient estimator of the parameter theta
Can somebody please, please help me with this... | 5 | [
-0.080078125,
-0.03564453125,
0.0546875,
-0.07666015625,
0.037841796875,
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0.0076904296875,
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0.06884765625,
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0.083984375,
-0.0693359375,
-0.05029296875,
0.078125,
0.0179443359375,
-0.072265625,
-0.... | 29,461 | 29461 | |
finite flat morphism of degree two
up vote 3 down vote favorite
1
Let $f: X \to Y$ be a morphism between noetherian integral schemes. Suppose $f$ is finite flat of degree two. Then is there an involution $\sigma: X \to X$ over $Y$, which gives the non-trivial
Galois involution at the generic point?
ag.algebraic-geome... | 5 | [
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0.095703125,
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-0.07421875,
-0.0289306... | 29,462 | 29462 | |
Find the possible values of X using "Similar right triangles"?
February 26th 2011, 05:44 AM #1
Find the possible values of X using "Similar right triangles"?
there are three right angled triangles that you can use to apply phythagoras theorem. apply that theorem to two of them find the lenght of unknown sides wit... | 4 | [
-0.03955078125,
0.0211181640625,
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0.0264892578125,
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0.039306640625,
0.05419921875,
-0.01239013671875,
-0.0029296875,
-0.0751... | 29,463 | 29463 | |
Please help, integration
April 9th 2006, 02:51 AM #1
Newbie
Joined
Apr 2006
Posts
4
Please help, integration
The area under the graph y= 4 + 2x from x=0 to x=4 is divided into two equal parts by the line x=k. Find the value of k.
Please ive been stuck on this for years
You're asking for a valu... | 5 | [
0.0966796875,
0.07763671875,
0.0064697265625,
-0.007781982421875,
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0.0517578125,
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0.016357421875,
-0.04833984375,
0.06689453125,
0.052978515625,
0.02770996093... | 29,464 | 29464 | |
How many solutions
How many solutions does the equation $x+y+z=100$ have on the set of positive integers?
The equation $x_1+x_2+...+x_k = n$ can be inverstigated in the following way. First construct a row of $n$$1$'s: $1 \ 1 \ 1 ... \ 1$. Now between any space you can place a break $\bold{b}$ and that
will give you a... | 4 | [
-0.0791015625,
0.0791015625,
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-0.003082275390625,
0.1318359375,
-0.0123291015625,
-0.045898437... | 29,465 | 29465 | |
Four roots of an equation
October 9th 2008, 10:26 AM #1
Junior Member
Joined
Aug 2008
Posts
65
Four roots of an equation
Greetings,
This is a homework. Not quite an urgent one - I need it for monday and I have had it since monday. Unfortunately, few ideas occured to me.
Obviously, a reasonable st... | 4 | [
0.017578125,
-0.007720947265625,
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0.025390625,
-0.043701171875,
0.06640625,
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0.030029296875,
-0.024169921875,
0.01190185546875,
0.1083984375,
-0.033203125,
0.07080078125,
0.052001953125,
0.0234375,
0.10400390625,
-0.01025390625,
0.0135498046875,
0.... | 29,466 | 29466 | |
Factoring polynomials
March 10th 2011, 06:51 PM #1
Newbie
Joined
Mar 2011
Posts
1
Factoring polynomials
Please forgive me for any placement errors of the thread or ah..pretty much any errors here. Being new and all I feel a bit intimidated here.
Anyway, as the topic says I'm currently stuck with fac... | 4 | [
-0.0162353515625,
-0.006866455078125,
-0.0157470703125,
0.06884765625,
0.07080078125,
0.026611328125,
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-0.07373046875,
-0.028076171875,
0.025390625,
0.03564453125,
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0.01190185546875,
0.060546875,
-0.020263671875,
0.01483154296875,
-0.02392578125,
0.0... | 29,467 | 29467 | |
Design signal in Matlab - All About Circuits Forum
#
1
05-11-2009, 05:16 AM
Join Date: May 2009
Junior Member
Posts: 10
Design signal in Matlab
1. Create a signal by typing the following at the Matlab prompt: % Sample rate in Hertz
fs = 256;
% Number of samples of the signa... | 4 | [
0.0311279296875,
0.025146484375,
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0.130859375,
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0.04052734375,
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0.05322265625,
-0.0223388671875,
0.0185546875,
0.0040283203125,
0.024658203125,
-0.060... | 29,468 | 29468 | |
Volume Word Problem (geometry-type problem for physics)
January 9th 2009, 05:30 PM #1
Newbie
Joined
Jan 2009
Posts
2
Volume Word Problem (geometry-type problem for physics)
We're doing reviews of what we learned in chemistry in physics at the moment. (We just began our new semester so we changed our clas... | 4 | [
-0.003997802734375,
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0.07958984375,
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0.05517578125,
0.040283203125,
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0.031494140625,
0.09619140625,
-0.06494140625,
-0.0303955078125,
-0.04296875,
-0.02587890625... | 29,469 | 29469 | |
Get homework help at HomeworkMarket.com
Question
Submitted by
brkendeathlya...
on Tue, 2012-03-27 17:43
due on Mon, 2012-03-26 20:00
answered 2 time(s)
brkendeathlyangel is willing to pay $3.00
The yearly production of a 6 foot orange tree is 40 pounds of oranges. A 16 foot tree produces 65...
The yearly produc... | 4 | [
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0.09228515625,
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0.05029296875,
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0.05126953125,
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0.01708984375,
0.008056640625,
-0.046142578125,
0.0225830078125,
-0.0294189453125,
-0.048095703125,
0.0732421875,
-0.130859375,
-0.00439453... | 29,470 | 29470 | |
Diagnol Argument #2
February 3rd 2006, 10:34 AM
ThePerfectHacker
Diagnol Argument #2
If you do not like Cantor's Diagnol Argument, possibly because the same real number might not be unique, or the fact that rationals have repeating decimals. Then consider, a another variation of
the Diagnol Argument.
Def... | 4 | [
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0.003021240234375,
-0.041015625,... | 29,471 | 29471 | |
D'Alembert's Wave. Seems Easy Or Maybe I'm Missing Something???
July 13th 2008, 03:41 PM #1
Junior Member
Joined
Jul 2008
Posts
29
D'Alembert's Wave. Seems Easy Or Maybe I'm Missing Something???
Hi I have this D'Alembert's question. What I've done seems easy so I wanted to clarify just in case I'm missin... | 5 | [
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... | 29,472 | 29472 | |
Help please: How to graph Sin x + Cos x, and Cotangent
Please help explain how to graph Cotangent and Sin x + cos x
For cotangent use the values for $\displaystyle\frac{\pi}{6}, \ \frac{\pi}{4}, \ \frac{\pi}{3}, \ \frac{\pi}{2}, \ \frac{2\pi}{3}, \ \frac{3\pi}{4}, \ \frac{5\pi}{6}$ and the vertical asympthotes.
For th... | 4 | [
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0.015258... | 29,473 | 29473 | |
3. Sampling Weights and Adjustments
This section discusses the development of survey weights. Two types of weights were used in the present survey: pre-population adjustment weights (to correct for unequal selection probabilities) and
post-stratification (to correct for known discrepancies between the sample and the po... | 4 | [
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-0.0263671875,
-0.03955078125,
0.0634765625,
0.008605... | 29,474 | 29474 | |
An Entropy Inequality
up vote 29 down vote favorite
8
Let $X,Y$ be probability measures on $\{1,2,\dots,n\}$, and set $K=\sum_i\sqrt{X(i)Y(i)}$ so that $Z:=\frac{1}{K}\sqrt{XY}$ is also a probability measure on $\{1,2,\dots,n\}$. How can we prove
the inequality $$H(X)+H(Y)\geq 2K^2 H(Z),$$ where $H(X)=-\sum_{i... | 5 | [
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0.0908203125,
0.01080322265625,
-0.0252685546875,
0.0216064453125,
0.04321289062... | 29,475 | 29475 | |
Analysis of a Reflectarray by Using an Iterative Domain Decomposition Technique
International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 139146, 8 pages
http://dx.doi.org/10.1155/2012/139146
Research Article
Analysis of a Reflectarray by Using an Iterative Domain Decomposition Technique
Compu... | 4 | [
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-0.054443359375,
-0.05810546... | 29,476 | 29476 | |
Do not understand (integration by parts)
December 3rd 2007, 04:18 PM #1
Newbie
Joined
Dec 2007
Posts
5
Find the following general anti-derivatives using integration by parts formula
a. intergration sign goes before problem but couldnt enter it on here (x+2/e^3x) dx
$\int {\frac{{x + 2}}<br /> {{... | 5 | [
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0.054931640625,
-0.10693359375,
0.0262451171875,
-0.002365112304... | 29,477 | 29477 | |
the encyclopedic entry of mass deficiency
Binding energy
is the
mechanical energy
required to disassemble a whole into separate parts. A bound system has a lower
potential energy
than its constituent parts; this is what keeps the system together. The usual convention is that this corresponds to a
positive
bindin... | 4 | [
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0.042724609375,
0.0... | 29,478 | 29478 | |
On Common Coupled Fixed Point Theorems for Comparable Mappings in Ordered Partially Metric Spaces
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 486384, 6 pages
http://dx.doi.org/10.1155/2014/486384
Research Article
On Common Coupled Fixed Point Theorems for Comparable Mappings in Ordered Partially Metr... | 5 | [
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-0.007720947265625,
-0.... | 29,479 | 29479 | |
A Coupling Method of New EMFE and FE for Fourth-Order Partial Differential Equation of Parabolic Type
Advances in Mathematical Physics
Volume 2013 (2013), Article ID 787891, 14 pages
http://dx.doi.org/10.1155/2013/787891
Research Article
A Coupling Method of New EMFE and FE for Fourth-Order Partial Differential Equat... | 5 | [
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-0.034423828125,... | 29,480 | 29480 | |
evaluating limits
Use the squeeze theorem to show that lim(n->infinity) (5+2n+7(n^2))^(1/n) = 1 and lim(n->infinity) (ln(n))^(1/n) = 1 Thanks so much.
I willl do the second one and you do the first. Ok? We know that $\forall{x}\geq{e}\quad{1}\leq\ln(x)$ Also we know that $\forall{x}\in\mathbb{R}^+\quad{\ln(x)\leq{x}}$... | 5 | [
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-0.033447265625,
-0.02490234375,
-0.... | 29,481 | 29481 | |
2 parallel chords: finding radius
April 9th 2010, 02:23 AM #1
Junior Member
Joined
Apr 2010
Posts
29
2 parallel chords: finding radius
Hello,
I have over and over again tried to figure this problem out. I swear I simply am not able to figure it out :/
Two parallel chords are 16 centimeters and ... | 4 | [
0.00018787384033203125,
0.05078125,
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-0.006011962890625,
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0.022705078125,
-0.0361328125,
0.0272... | 29,482 | 29482 | |
normal distribution
November 27th 2008, 04:26 AM #1
Newbie
Joined
Nov 2008
Posts
1
normal distribution
im having problem with this question:
The mass of a grade A papaya follows a normal distribution with mean 1.8 kg and standard deviation 200 g. The mass of a grade B papaya follows a normal distrib... | 5 | [
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0.0139770507... | 29,483 | 29483 | |
Complex Fractions with variable in denominator
February 15th 2011, 02:47 PM #1
Newbie
Joined
Feb 2011
Posts
24
Complex Fractions with variable in denominator
2 / 5 / x + 4
Having trouble solving this problem and have no clue where to start. I'm trying to eliminate any fractions in the denominator.
... | 4 | [
-0.037353515625,
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0.0341796875,
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0.04443359375,
-0.11328125,
-0.0279541015625,
0.115234375,
-0.00335693359375,
0.04833984375,
0.028076171875,
0.07568359375,
... | 29,484 | 29484 | |
Which Are Even Unimodular
International Journal of Mathematics and Mathematical Sciences
Volume 2013 (2013), Article ID 837080, 4 pages
http://dx.doi.org/10.1155/2013/837080
Research Article
On the Classification of Lattices Over Which Are Even Unimodular -Lattices of Rank 32
Lehrstuhl A für Mathematik, RWTH Aache... | 5 | [
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0.05859375,
... | 29,485 | 29485 | |
Complex Limit
November 18th 2010, 06:53 PM #1
MHF Contributor
Joined
Mar 2010
From
Florida
Posts
3,093
Thanks
5
Complex Limit
Consider the Limit $\displaystyle \lim_{z\to i}\left[|z|+iArg(iz)\right]$.
What is the limit when approaching i on the unit circle in the first quadrant?
$\displ... | 5 | [
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-0.00445556640625,
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0.0419921875,
0.03857421875,
-0.0040283203125,
-0.047607421875,
0.05859375,
-0.004302978515625,
0.060302734375,
0.043701171875,
-0.04150390625,
0.00689697265625,
-0.0101928... | 29,486 | 29486 | |
0503HW_sol.htm
0503HW_sol 5.3 Binomial
Link: http://www.rmower.com/statistics/stat_lecture/0065_discrete_rand_var_all.pdf
Answers: 1) Procedure results in a binomial distribution. 2) 0.117 3) 0.184 4) 0.119 5) 3.4 6) 7.3 7) Yes
Solutions below:
1) (Original Problem) Determine whether the given procedure results in ... | 5 | [
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-0.009033203125,
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-0.03271484375,
-0.033203125,
0.005523681640625,
-0.048095703125,
-... | 29,487 | 29487 | |
inequality question
January 15th 2007, 08:29 PM
msdonnelly
inequality question
How do you solve the inequality x²+x>1. I can not remember how to factor it. It doesnt make sense to me how you can have a single x and a negative 1
January 15th 2007, 08:32 PM
msdonnelly
inequality question
x²+x>1. I can not ... | 4 | [
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0.0458984375,
0.03515625,
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0.020263671875,
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0.07763671875,
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-0.1318359375,
0.0405... | 29,488 | 29488 | |
Proof involving functions.
September 8th 2011, 12:50 AM #1
Member
Joined
May 2009
Posts
211
Proof involving functions.
I have a statement to prove:
If f: A-->B is onto ... then prove that there exists a function g: B-->A such that g is one-to-one.
.
.
What i've come up with as a proof ... | 5 | [
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-0.045654296875,
... | 29,489 | 29489 | |
finding the dy/dx
September 30th 2006, 06:16 AM #1
Member
Joined
Sep 2005
Posts
84
finding the dy/dx
i am having trouble with find the dy/dx for
1) y= 1/3x3
2) y= 3/4x5
3) y=4 square root_/x3
please note the small numbers are powers.
Hello,
if y = a*x^r, a, r are real numbe... | 4 | [
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... | 29,490 | 29490 | |
Optimal Placement of Passive Energy Dissipation Devices by Genetic Algorithms
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 474282, 21 pages
http://dx.doi.org/10.1155/2012/474282
Research Article
Optimal Placement of Passive Energy Dissipation Devices by Genetic Algorithms
^1Faculty of Infrastr... | 4 | [
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0.005126953125,
-... | 29,491 | 29491 | |
A 7-Level Single DC Source Cascaded H-Bridge Multilevel Inverter with a Modified DTC Scheme for Induction Motor-Based Electric Vehicle Propulsion
International Journal of Vehicular Technology
Volume 2013 (2013), Article ID 718920, 9 pages
http://dx.doi.org/10.1155/2013/718920
Research Article
A 7-Level Single DC Sour... | 4 | [
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0.12109375,
-0.05322265625,... | 29,492 | 29492 | |
[Binomial Series]Find 25^1/3 with precision of 3 decimals.
December 25th 2012, 03:15 PM #1
Newbie
Joined
Dec 2012
From
Canada
Posts
13
[Binomial Series]Find 25^1/3 with precision of 3 decimals.
Question. Find 25^1/3 with precision of 3 decimals.
My book says:
$\sqrt[3]{25}=\sqrt[3]{27}\sqrt... | 5 | [
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0.03466796875,
0.045166015625,
0.004486083984375,
-0.044189453125,
0.0556640625,
0.... | 29,493 | 29493 | |
Geometric and quadratic means
May 4th 2007, 12:06 PM
icebag
Geometric and quadratic means
I suspect that there is no pair of distinct integers a, b for which the geometric mean and the quadratic mean (root mean square) are both integers, but I am getting nowhere trying to prove it.
Any ideas? :confused:
May... | 4 | [
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... | 29,494 | 29494 | |
an example of a ploynomial which factors, but has no roots
September 7th 2006, 02:52 AM #1
Member
Joined
Sep 2006
Posts
83
an example of a ploynomial which factors, but has no roots
Give an example of a polynomial f(x) with integer coefficient which factors (poly mod n) but which has no roots, i.e. for w... | 5 | [
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-0.0234375,
-0.0013046264648437... | 29,495 | 29495 | |
Quadratic Function in Standard Form
Quadratic function
A second degree polynomial function is called Quadratic function. The general form of a quadratic function is
f(x) = ax^2 + bx + c, a ≠ 0.
Example: -
f(x) = 3x^2 + 4x + 5 is an example of a quadratic function
f(x) = 6x^2 + 7x +12is another example of quadratic fu... | 4 | [
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0.0186767578125,
-0.03662109375,... | 29,496 | 29496 | |
Physics Homework Help
MAGNETIC FLUX
Magnetic flux may be thought of as an amount of magnetic field passing through an area. The following diagram depicts a magnetic field directed away from the observer. A particular area of the field
has been enclosed in a rectangle.
There are several ways of increasing magnetic fl... | 5 | [
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0... | 29,497 | 29497 | |
First part of radicals question
January 15th 2010, 12:53 AM #1
Junior Member
Joined
Nov 2009
Posts
25
First part of radicals question
Let f (x) = x^4 + px^2 + qx + r ∈ Q[x] be an irreducible quartic. Let α1 , . . . , α4 be the roots of f in a splitting field L over Q. Define elements β1 , . . . , β3 ∈ L ... | 4 | [
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0.07568359375,
-0.0... | 29,498 | 29498 | |
Multiply and Divide Decimals by 10, 100, and 1000
(powers of ten)
This is a complete lesson with a video & exercises showing, first of all, the common shortcut for multiplying & dividing decimals by powers of ten: you move the decimal point as many steps as there
are zeros in the number 10, 100, 1000 etc.
Then, I als... | 4 | [
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0.05... | 29,499 | 29499 |