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Computational Determination of the Dirac-Theory Adjunctator Advances in High Energy Physics Volume 2013 (2013), Article ID 391741, 4 pages http://dx.doi.org/10.1155/2013/391741 Research Article Computational Determination of the Dirac-Theory Adjunctator Institute for Physics and Nuclear Engineering, Atomistilor Stre...
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Intergration of fraction Intergrate -x/(1-x^2)dx, i tried partial fractions but i didn't get a valid answer, Thanks for any help :) Yep i've got the answer, -(1/2)ln(1-x^2). Thanks for the suggestion :) You don't want the negative sign out front... $\int\frac{-x}{1-x^2}\,dx=\frac{1}{2}\int\frac{-2x\,dx}{1-x^2}=\frac{...
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Decide if sequence converges/diverges June 10th 2009, 03:38 PM utopiaNow Decide if sequence converges/diverges The given sequence is: $a_n = n\left(\sqrt{1 + \frac{1}{n}} - 1\right)$. I rearranged terms to get $a_n = \sqrt{n^2 + n} - n$. I couldn't tell by inspection if this is convergent or divergent, so I...
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Number Theory Question (Mobius Theorem) March 7th 2011, 02:16 AM #1 Senior Member Joined Apr 2009 Posts 306 Number Theory Question (Mobius Theorem) Hi guys, I just have a few problems with part b) and c), I can do part a) the following is my working but I'm just not sure how to solve b) and c). An...
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Channel Modelling for Multiprobe Over-the-Air MIMO Testing International Journal of Antennas and Propagation Volume 2012 (2012), Article ID 615954, 11 pages http://dx.doi.org/10.1155/2012/615954 Research Article Channel Modelling for Multiprobe Over-the-Air MIMO Testing Elektrobit Corporation, Wireless Business Segm...
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Vehicle Yaw Rate Estimation Using a Virtual Sensor International Journal of Vehicular Technology Volume 2013 (2013), Article ID 582691, 13 pages http://dx.doi.org/10.1155/2013/582691 Research Article Vehicle Yaw Rate Estimation Using a Virtual Sensor ^1Mechanical Engineering Department, İstanbul Technical University...
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function with derivative October 25th 2010, 09:42 AM #1 Senior Member Joined Apr 2006 Posts 290 function with derivative Right I was given this problem to solve. Some of the questions I can do, others i am stuck with and need a maths guru to help. So here goes, I am given on a grid the drawing of th...
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BIBO Stabilization of Discrete-Time Stochastic Control Systems with Mixed Delays and Nonlinear Perturbations Abstract and Applied Analysis Volume 2013 (2013), Article ID 916357, 11 pages http://dx.doi.org/10.1155/2013/916357 Research Article BIBO Stabilization of Discrete-Time Stochastic Control Systems with Mixed De...
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Quadric surfaces problem please help. September 15th 2009, 06:51 PM #1 Junior Member Joined Oct 2008 Posts 32 Quadric surfaces problem please help. Here is the problem exactly how it is written on my paper... Consider the surfaces x^2+2y^2-z^2+3x=1 and 2x^2+4y^2-2z^2-5y=0. a. What is the name of...
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Applied max and min problem November 9th 2009, 09:11 PM #1 Newbie Joined Oct 2009 Posts 6 Applied max and min problem Hi, I'm having a bit of trouble getting this one problem started: Painters are painting the second floor exterior wall of a building that adjoins a busy sidewalk. A corridor 2 m wide...
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Fourier Transforms Help September 28th 2007, 04:11 AM atwinix Fourier Transforms Help I need help with the following problems: Question 1: a) Find the Fourier Transform of http://i82.photobucket.com/albums/j256/atwinix/Q1.jpg b) Determine the limit of this transform as http://i82.photobuc...
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the encyclopedic entry of null sequence The limit of a sequence is one of the oldest concepts in mathematical analysis . It provides a rigorous definition of the idea of a sequence converging towards a point called the limit. Intuitively, suppose we have a sequence of points (i.e. an infinite set of points labelle...
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the encyclopedic entry of Gosset lattice In mathematics , the E[8] lattice is a special lattice in R^8 . It can be characterized as the unique positive-definite, even, unimodular lattice of rank 8. The name derives from the fact that it is the root lattice of the E[8] root system . The norm of the E[8] l...
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Algebra November 17th 2009, 03:42 PM Zero266 Algebra if a and b are integers and (a+b* sqrt(11) )> 1 and (a+b* sqrt(11) )* (a-b* sqrt(11) )=1, how do i show that a and b are positive integers? I was able to prove b>0 , but i can't seem to get the a >0 part, which makes me doubt whether i really showed b>0 . ...
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How to convert volts to ohms How to convert electrical voltage in volts (V) to electric resistance in ohms (Ω). You can calculate ohms from volts and amps or watts, but you can't convert volts to ohms since volt and ohm units do not measure the same quantity. Volts to ohms calculation with amps ...
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Basic trigonometric integral question February 22nd 2013, 05:06 AM #1 Newbie Joined Aug 2012 From London Posts 22 Basic trigonometric integral question Just wondering about the validity of this answer obtained via using an identity? A second opinion would be much appreciated! Thanks. Re: Basic t...
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Math Help May 6th 2009, 02:23 PM #1 Newbie Joined Apr 2009 Posts 3 The function f(x)= 2(x^2)arctan(x^10) is represented as a power series. What is the lowest term with a nonzero coeddicient. I cant seem to get the answer for this problem and any help is appreciated. Thanks. The power series at ...
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Calculating integral July 21st 2011, 06:45 AM #1 Calculating integral Hi, I've to calculate: $\int \sqrt{\tan(x)}dx$ My solution: $\int \sqrt{\tan(x)}dx=\int \frac{\sqrt{\sin(x)}}{\sqrt{\cos(x)}}dx$ Maybe now the substitution: Let $\sqrt{\cos(x)}=t$ then $\frac{-\sin(x)dx}{2\sqrt{\cos(x)}}...
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the encyclopedic entry of linear transformation Direct linear transformation ( DLT ) is an algorithm which solves a set of variables from a set of similarity relations: $mathbf\left\{x\right\}_\left\{k\right\} propto mathbf\left\{A\right\} , mathbf\left\{y\right\}_\left\{k\right\}$ for $, k = 1, ldots, N$ wher...
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Estimate Lateral Tire Force Based on Yaw Moment without Using Tire Model ISRN Mechanical Engineering Volume 2014 (2014), Article ID 934181, 8 pages http://dx.doi.org/10.1155/2014/934181 Research Article Estimate Lateral Tire Force Based on Yaw Moment without Using Tire Model ^1School of Mechanical and Automotive Eng...
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Matroidal Structure of Rough Sets Based on Serial and Transitive Relations Journal of Applied Mathematics Volume 2012 (2012), Article ID 429737, 16 pages http://dx.doi.org/10.1155/2012/429737 Research Article Matroidal Structure of Rough Sets Based on Serial and Transitive Relations Laboratory of Granular Computing,...
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Extragradient Method for Solutions of Variational Inequality Problems in Banach Spaces Abstract and Applied Analysis Volume 2013 (2013), Article ID 832548, 8 pages http://dx.doi.org/10.1155/2013/832548 Research Article Extragradient Method for Solutions of Variational Inequality Problems in Banach Spaces ^1Departmen...
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Math Induction April 14th 2007, 08:02 PM smoothi963 Math Induction Use to math induction prove: F1^2 + F2^2 + … + Fn^2 = FnFn+1 Please help. Im stuck at the inductive step >.< April 14th 2007, 11:00 PM CaptainBlack April 15th 2007, 06:06 AM Plato This is fairly standard in discrete mathema...
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Leibnitz Formula. August 21st 2009, 10:14 AM #1 Member Joined Aug 2009 From Mumbai Posts 83 Leibnitz Formula. Okay I'm not sure if this is University level or below, but anyway Apply the Leibnitz theorem to the function $y=x^{2n}$ and hence prove that, $1 + (n^2)/1 + ((n^2)(n-1)^2)/(1^...
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Double integrals February 20th 2010, 09:18 PM #1 Newbie Joined Feb 2010 Posts 6 We are learning about double integrals in 15.5. I think i understand the concepts of the chapter, but i really just don't see how to solve this problem. Any help would be greatly appreciated $x^2+ y^2= a^2$ is, of c...
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Today's calculation of integral #4 March 31st 2008, 05:45 PM #1 Today's calculation of integral #4 No matter what $k$ is. Let $<br /> \alpha=\int_0^1\frac{e^u}{1+u}\,du<br />$ & $<br /> \beta=\int_{k-1}^k\frac{e^{-x}}{x-k-1}\,dx.<br />$ Assume that $<br /> \lambda\cdot \alpha=\beta.<br />$ Compute $\lambda.$ ...
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integration please help October 31st 2008, 06:34 AM #1 Newbie Joined Oct 2008 Posts 2 integration please help hi ò(between (pi/6) and (-pi/2)) of (e^x sin(2x)) does anyone know how to solve this definite integral? it seems like everytime i do it i get a different answer, also does anyone kno...
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Just curious June 15th 2007, 02:45 AM Janner Just curious First of all, I don't know if this is the right sub-forum for this question. I never had the difference between geometry and trigonometry, so keep that in mind before flaming me. Now my question; If you know the length of the hypotenusa in a righ...
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Math Help April 9th 2008, 07:36 AM #1 Newbie Joined Apr 2008 Posts 2 roll a die Help! If I roll a die 8 times...I'd like to know the probability of getting an odd number. a) exactly 3 times. b) at least 7 times. c) at most 6 times. using the formula: nCr (p)^r (1-p)^n-r (I couln't figu...
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Implicit Differentiation June 18th 2008, 10:35 PM #1 Junior Member Joined Sep 2007 Posts 69 Implicit Differentiation A 11 foot ladder is placed against a vertical wall. The bottom of the ladder slides away from the wall at a constant rate of 2.9 ft/s. How fast is the top of the ladder sliding down the wa...
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nested summation September 20th 2008, 09:47 AM #1 Newbie Joined Sep 2008 Posts 1 nested summation Is there any way to calculate this efficiently? $<br /> \sum_{i=min_N}^{max_N}\left\{<br /> \sum_{j=min_{N-1}}^{i-1}\left\{<br /> ...\left\{<br /> \sum_{q=min_2}^{p-1} 1<br /> ...<br /> \right\}<br /> \r...
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Basic proof of identity in introductory set theory March 28th 2011, 06:53 AM #1 Newbie Joined Mar 2011 Posts 12 Basic proof of identity in introductory set theory Hi, this is my first post here so please tell me if there is something wrong about it... I just started to read "Notes on set theory" by ...
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Proof of Differential Equation Identities October 18th 2009, 11:56 AM Jiggy Proof of Differential Equation Identities Hi guys I'm new here and I thought that maybe you could help me with this problem. I don't quite understand the notation and what the thing is meaning. Prove the following: (D-a)(D-b){f...
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the encyclopedic entry of moment of momentum This article is about the moment of inertia of a rotating object. For the moment of inertia dealing with bending of a plane, see second moment of area. Moment of inertia, also called mass moment of inertia or the angular mass, (SI units kg m^2, British units slug ft^2),...
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A Mollification Regularization Method for a Fractional-Diffusion Inverse Heat Conduction Problem Mathematical Problems in Engineering Volume 2013 (2013), Article ID 109340, 9 pages http://dx.doi.org/10.1155/2013/109340 Research Article A Mollification Regularization Method for a Fractional-Diffusion Inverse Heat Cond...
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Lobachevskii Journal of Mathematics http://ljm.ksu.ru Vol. 16, 2004, 57 – 69 © A. Kuznetsov Alexander Kuznetsov ON A PROBLEM OF AVHADIEV (submitted by F. Avhadiev) ABSTRACT. In this paper we consider a lower estimate for the ratio I(Ω)of the conformal moment of a simple connected domain Ωin the complex plane to the...
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determine Maclaurin development of order 3 with residual term with o notation e^sinx February 23rd 2011, 05:50 AM #1 Member Joined Jan 2011 Posts 83 determine Maclaurin development of order 3 with residual term with o notation e^sinx determine Maclaurin development of order 3 with residual term with o no...
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Field extension question November 18th 2009, 03:25 AM #1 Junior Member Joined Nov 2009 Posts 25 Field extension question I'm trying to answer this question: "Let M:L:K be finite field extensions. When M is not normal over K, give four examples to show that this gives us no information about the norm...
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Euler's formula + Handshake Theorem Using Euler's formula and the Handshake Theorem, how can I show that this graph is non-planar? Last edited by Natasha1; May 16th 2006 at 10:25 AM. The number of vertices is 8 The number of edges is 14 The number of faces is f Then, 8-14+f=2 if planar. Thus, f=8 Which is not true. I...
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South African Journal of Science Services on Demand Article Indicators Related links Share Print version ISSN 0038-2353 S. Afr. j. sci. vol.107 no.9-10 Pretoria  2011   ...
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An Energy-Efficient Distributed Algorithm for Virtual Backbone Construction with Cellular Structure in WSN International Journal of Distributed Sensor Networks Volume 2012 (2012), Article ID 840983, 7 pages http://dx.doi.org/10.1155/2012/840983 Research Article An Energy-Efficient Distributed Algorithm for Virtual Ba...
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Power and Sample Size for Repeated Measures ANOVA with R January 20, 2012 By G. Jay Kerns Background One of my colleagues is an academic physical therapist (PT), and he's working on a paper to his colleagues related to power, sample size, and navigating the thicket of trouble that surrounds those two things. We rec...
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A Novel Approach to Sliding Mode Control of Time-Delay Systems Mathematical Problems in Engineering Volume 2013 (2013), Article ID 678653, 9 pages http://dx.doi.org/10.1155/2013/678653 Research Article A Novel Approach to Sliding Mode Control of Time-Delay Systems ^1Space Control and Inertial Technology Research Cen...
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Integrals and work again March 11th 2007, 06:08 AM #1 Junior Member Joined Nov 2006 Posts 59 Integrals and work again Water in a cylinder of height 10 ft and radius 4 ft is to be pumped out. Find the work required if (a) The tank is full of water and the water is to be pumped over the top of the tan...
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The Invertibility, Explicit Determinants, and Inverses of Circulant and Left Circulant and Abstract and Applied Analysis Volume 2014 (2014), Article ID 931451, 14 pages http://dx.doi.org/10.1155/2014/931451 Research Article The Invertibility, Explicit Determinants, and Inverses of Circulant and Left Circulant and -C...
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Solving a linear system by substitution :confused: i have to solve this by substitution and then check it and im not sure how? x-2y=4 2x-3y=7 re hi i am not sure of what is substitution but here is my guess of what it means you've got your first equation ax+by=c (general case ) it could be write as ax-c=-by so y=(c-ax...
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Parametrization March 8th 2009, 04:41 PM #1 Newbie Joined Feb 2009 Posts 5 Parametrization Let GAMMA be the path with parametrization gamma(t) = 2 - i + 3e^it Sketch GAMMA indicating the direction of increasing t and identifying it's inital and final points in cartesian form. By applying...
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Inverse Functions July 1st 2011, 04:09 AM Blizzardy Inverse Functions The function f and g are defined by f : x -> (2-3x)/(3-x), x > 3, g : x -> x^2 - 4x + a, a E R (i.e. a is an element of all real no.), x>1 Define in a similiar manner, the inverse function f ' and show that f^2 (x) = x. Hence dete...
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I’ll take my NLS with weights, please… January 13, 2014 By anspiess Today I want to advocate weighted nonlinear regression. Why so? Minimum-variance estimation of the adjustable parameters in linear and non-linear least squares requires that the data be weighted inversely as their variances $w_i \propto \sigma^{-2}$...
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Lamina Workouts February 25th 2010, 02:37 PM Selim Lamina Workouts Given a lamina of uniform density $\rho$, bounded by $y = \sqrt{x} , y=0 , x=4.$ 1. Set up an integral to find m, the mass of the lamina. 2. Find m, the mass of the lamina 3. Set up Integral to find Mx 4. Find Mx 5. Set up in...
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Generalizing Krawtchouk Polynomials Using Hadamard Matrices ISRN Applied Mathematics Volume 2014 (2014), Article ID 498135, 8 pages http://dx.doi.org/10.1155/2014/498135 Research Article Generalizing Krawtchouk Polynomials Using Hadamard Matrices ^1Department of Computer Science, Mathematics and Physics, Faculty of ...
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Strong Laws of Large Numbers for Arrays of Rowwise NA and LNQD Random Variables Journal of Probability and Statistics Volume 2011 (2011), Article ID 708087, 10 pages http://dx.doi.org/10.1155/2011/708087 Research Article Strong Laws of Large Numbers for Arrays of Rowwise NA and LNQD Random Variables College of Scien...
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Set help appreciated July 26th 2010, 06:45 PM #1 Member Joined Jul 2008 Posts 212 Here is the question at this link: Yfrog Image : yfrog.com/m9setsp So here's what I've done so far: I know the A with the little hat on top means everything outside of A ie the universe. Now I know that A u B with the h...
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Homework Help Posted by Lucia on Tuesday, July 19, 2011 at 5:04pm. the area of a rectangle is 425 square feet. if the perimeter is 84 feet, find the length and the width of the rectangle • algebra - Henry, Tuesday, July 19, 2011 at 8:23pm Eq1: L*W = 425Ft^2. Eq2: 2L + 2W = 84Ft. L + W = 42. L e 4...
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Large applications of linear mixed models October 18, 2011 By Luis In a previous post I summarily described our options for (generalized to varying degrees) linear mixed models from a frequentist point of view: nlme, lme4 and ASReml-R^†, followed by a quick example for a split-plot experiment. But who is really hap...
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Teen Solves Newton’s 300-Year-Old Riddle - An Indian-born teenager who lives in Germany has solved a mathematical problem posed by Sir Isaac Newton that's baffled mathematicians ever since • /r/worldnews you are viewing a single comment's thread. [–]klackity860 points861 points862 points sorry, this has been archived...
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stop that bus! July 11th 2008, 01:33 AM alv stop that bus! A bus moves with k travelers, and it can stop in n stations according to every traveler's request. The probability of getting down for every traveler is the same and independent of other travelers' getting out. The bus stops given that at least one t...
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Equation of a plane September 9th 2006, 05:45 PM #1 Equation of a plane I just finished my home work and I have a question First, I had to find the equation of a plane containing the points (A,0,0), (0,B,0) and (0,0,C) The Equation I came up with is 2BCx + ACy + ABz = 2ABC I'm sure I am supposed to...
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Homework Help Posted by Jess on Wednesday, March 20, 2013 at 9:01pm. Simplify: 5th roof of (6th root of 10 * sqaure root of 1000) or: (10^1/6 * 1000^1/2)^1/5 (^ another way of writing it) • Math - Reiny, Wednesday, March 20, 2013 at 10:27pm (10^1/6 * 1000^1/2)^1/5 = (10^(1/6) * 10^(3/2) )^1/5 = ( 1...
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Differentiation Can someone help me revise how to do these... x^4cos(x^2) tan(x)/1+x^3 - quotient rule sin(exp(1+x^2)) - chain rule? 1) $x^4\cos x^2$ Product Rule: $(x^4\cos x^2)' = (x^4)'\cos x^2 + x^4(\cos x^2)'$ Apply chain rule on $\cos x^2$ $= 4x^3\cos x^2+ x^4 (2x\cos x^2)$ $= 4x^3\cos x^2 + 2x^5\cos x^2$ 2) $\f...
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differential equation for a sphere December 19th 2012, 09:05 AM #1 Junior Member Joined Jun 2012 From Trinidad and Tobago Posts 32 differential equation for a sphere The rate of change of volume of a sphere is proportional to the volume of the sphere. Obtain a differential equation for the radius. ...
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Why are exact ODEs called exact? December 24th 2009, 02:29 AM #1 Newbie Joined Dec 2009 Posts 13 Why are exact ODEs called exact? No, it's not the start of a joke! I'm just wondering why are exact ODEs called exact? All I can think of so far is that they don't end up with an integration constan...
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Minimum-Norm Fixed Point of Pseudocontractive Mappings Abstract and Applied Analysis Volume 2012 (2012), Article ID 926017, 15 pages http://dx.doi.org/10.1155/2012/926017 Research Article Minimum-Norm Fixed Point of Pseudocontractive Mappings ^1Department of Mathematics, University of Botswana, Private Bag 00704, Ga...
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Asymptotic Behavior of Solutions to Abstract Stochastic Fractional Partial Integrodifferential Equations Abstract and Applied Analysis Volume 2013 (2013), Article ID 138068, 8 pages http://dx.doi.org/10.1155/2013/138068 Research Article Asymptotic Behavior of Solutions to Abstract Stochastic Fractional Partial Integr...
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Lessons In Electric Circuits -- Volume II Lessons In Electric Circuits -- Volume II Chapter 3 REACTANCE AND IMPEDANCE -- INDUCTIVE Pure resistive AC circuit: resistor voltage and current are in phase. If we were to plot the current and voltage for a very simple AC circuit consisting of a source and a resistor ...
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Groups of order p^{e}m contains subgroups of order p^r for every integer r<=e. March 2nd 2011, 03:57 PM CropDuster Groups of order p^{e}m contains subgroups of order p^r for every integer r<=e. Is this problem stated correctly? Doesn't p have to be a prime for this to be true? http://img832.imageshack.us/i...
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[ -0.0034027099609375, 0.04638671875, 0.056884765625, 0.054931640625, 0.1318359375, 0.01611328125, 0.054931640625, 0.037109375, -0.0118408203125, 0.00135040283203125, 0.06201171875, 0.09521484375, 0.023681640625, 0.0196533203125, 0.07958984375, -0.0439453125, -0.0615234375, -0.047851...
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Improper integral August 6th 2010, 01:08 PM #1 Member Joined May 2010 Posts 241 Improper integral Hi. Well, I've got this problem where the statement exhorts me to determinate the character of some improper integrals, and it begins with this one $\displaystyle\int_{-\infty}^{\infty}xe^{-x^2} dx$ ...
5
[ -0.034423828125, 0.0223388671875, 0.03076171875, 0.0284423828125, 0.033935546875, -0.06298828125, 0.01336669921875, 0.057861328125, -0.037841796875, 0.0294189453125, 0.08837890625, 0.0186767578125, 0.021728515625, 0.058837890625, -0.06201171875, -0.02001953125, 0.1025390625, -0.092...
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Gamma distribution Talk0 872pages on this wiki Template:Probability distribution In probability theory and statistics, the gamma distribution is a two-parameter family of continuous probability distributions. It has a scale parameter θ and a shape parameter k. If k is an integer then the distribution represents the ...
4
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Trig Integration with Absolute Value September 12th 2008, 10:00 AM MagicS06 Trig Integration with Absolute Value Hi, I don't know where to start on this problem: $\int_0^{\frac{\pi}{2}} |\sin{x} -\cos{x}| \ dx$ Any hints will be appreciated, thanks. September 12th 2008, 10:03 AM InfinitePartsInHarmon...
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[ -0.0654296875, 0.057861328125, 0.0301513671875, -0.06494140625, 0.04541015625, -0.0068359375, -0.021728515625, 0.10009765625, -0.0859375, -0.01904296875, 0.048828125, -0.02099609375, 0.048828125, 0.005584716796875, -0.0390625, -0.0625, 0.11865234375, -0.08642578125, -0.0130004882...
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Research on Optimal Control for the Vehicle Suspension Based on the Simulated Annealing Algorithm Journal of Applied Mathematics Volume 2014 (2014), Article ID 420719, 5 pages http://dx.doi.org/10.1155/2014/420719 Research Article Research on Optimal Control for the Vehicle Suspension Based on the Simulated Annealing...
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[ -0.02880859375, 0.0771484375, -0.01361083984375, 0.0252685546875, -0.04833984375, 0.049560546875, -0.016845703125, 0.052734375, -0.01031494140625, 0.0771484375, 0.0400390625, 0.056396484375, 0.08642578125, -0.036376953125, -0.138671875, 0.11328125, -0.00092315673828125, 0.02734375,...
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-Point Boundary Value Problem on Time Scales Abstract and Applied Analysis Volume 2012 (2012), Article ID 826504, 12 pages http://dx.doi.org/10.1155/2012/826504 Research Article Positive Solutions for Nonlinear First-Order m-Point Boundary Value Problem on Time Scales Department of Mathematics, Pamukkale University,...
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[ -0.09130859375, 0.05419921875, 0.08447265625, 0.0262451171875, -0.033447265625, 0.0751953125, -0.0001277923583984375, 0.048828125, 0.0693359375, -0.01007080078125, 0.06591796875, 0.00811767578125, 0.0140380859375, 0.08984375, 0.0185546875, 0.00238037109375, -0.0277099609375, -0.068...
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Trig and geometry problems given y = 5x and y = .5x, When the these lines cross, what is the value of tan theta? Assuming $\theta$ is the first-quadrant angle between the two lines, suppose that $\alpha$ is the first-quadrant angle between the x-axis and the line y = 0.5. Then, $\tan \alpha = 0.5$, and $\tan (\ alpha ...
4
[ -0.06494140625, -0.051513671875, 0.07080078125, -0.037109375, -0.03515625, -0.02587890625, 0.032958984375, -0.0439453125, 0.01806640625, -0.00518798828125, 0.055419921875, 0.04443359375, -0.0712890625, 0.11474609375, 0.01068115234375, 0.0830078125, -0.12158203125, -0.01251220703125...
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inequality (am i correct ?) December 5th 2010, 10:34 PM #1 Newbie Joined Dec 2010 Posts 12 inequality (am i correct ?) Hi ! I think I am doing the right thing here. Given: Solve for the solution set: | 7x - 1 | - 6 < 2 My solution: -1 < x < (9/7) My sleepy instructor says the ...
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probability of rolling a die... April 16th 2011, 05:16 PM #1 Senior Member Joined Aug 2009 Posts 349 probability of rolling a die... ok this problem is a little different from the others... what is the probability of either a die roll of a six or flipping a coin once and getting a heads? ok so ...
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[ 0.0108642578125, 0.040283203125, -0.0240478515625, -0.076171875, 0.009521484375, 0.01251220703125, 0.0269775390625, -0.0118408203125, 0.037109375, 0.08349609375, 0.01031494140625, -0.0284423828125, -0.0439453125, -0.0296630859375, 0.0218505859375, 0.03271484375, -0.09619140625, 0.0...
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Eigenvector December 7th 2009, 09:15 AM Dogod11 Eigenvector Hello everyone, this is the following: Given the matrix $\begin{bmatrix}{a}&{1}\\{0}&{3}\end{bmatrix}$ to determines the values of $a$ such that the vector $(7, 8)$ is an eigenvector of the matrix I know the value found should be a multipl...
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[ -0.02392578125, 0.052734375, -0.037353515625, -0.048828125, -0.06591796875, 0.08056640625, -0.0308837890625, -0.078125, -0.03857421875, 0.056884765625, 0.0791015625, -0.047607421875, -0.019287109375, 0.00787353515625, -0.0059814453125, 0.0308837890625, -0.125, 0.0262451171875, -0...
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Modular Multiplicative Inverse October 2nd 2009, 04:27 AM #1 Member Joined Apr 2009 Posts 190 Modular Multiplicative Inverse Hi I do not understand the idea of Modular Multiplicative Inverse at all. I have tried reading up on modular arithmetic for a day, but I still do not understand it. I had the ...
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Vector Velocity October 29th 2010, 01:36 AM preid Vector Velocity Hi Can someone verify these answers are correct (or at least say where I went wrong)? Thanks $v_{b}$ = velocity of bee in still air (speed = 6.7ms^-1; directon = N25 degrees E) $v_{b}$ = 6.7cos(90-25)i + 6.7sin(90-25)j = 2.8315i + 6....
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Math Help April 4th 2009, 12:39 PM #1 Newbie Joined Dec 2007 Posts 15 Vectors Hi, does anyone know if there is/what the general formula for the addition of vectors is? In particular, I'm trying to work out the problem: Two vectors n, what must be the angle between them? A friend offered the fo...
4
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-Contractive Mappings in Ordered Metric Spaces with Applications Abstract and Applied Analysis Volume 2013 (2013), Article ID 879084, 7 pages http://dx.doi.org/10.1155/2013/879084 Research Article Common Fixed Points for Weak ψ-Contractive Mappings in Ordered Metric Spaces with Applications ^1Department of Mathemati...
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New Weighted Norm Inequalities for Pseudodifferential Operators and Their Commutators International Journal of Analysis Volume 2013 (2013), Article ID 798528, 12 pages http://dx.doi.org/10.1155/2013/798528 Research Article New Weighted Norm Inequalities for Pseudodifferential Operators and Their Commutators ^1Depart...
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[ -0.07421875, -0.03466796875, 0.03564453125, -0.04931640625, -0.033203125, 0.055419921875, 0.060302734375, 0.04931640625, -0.0240478515625, -0.00079345703125, 0.01214599609375, -0.050537109375, 0.06396484375, 0.00909423828125, -0.0113525390625, 0.0245361328125, 0.02099609375, 0.0026...
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Robust Model Predictive Control of Networked Control Systems under Input Constraints and Packet Dropouts Abstract and Applied Analysis Volume 2014 (2014), Article ID 478567, 11 pages http://dx.doi.org/10.1155/2014/478567 Research Article Robust Model Predictive Control of Networked Control Systems under Input Constra...
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[ -0.045166015625, 0.02685546875, 0.026611328125, 0.1103515625, 0.0087890625, 0.0732421875, 0.0025482177734375, 0.050048828125, -0.08935546875, 0.0419921875, 0.0038909912109375, 0.003753662109375, 0.0908203125, -0.09375, -0.06591796875, 0.0311279296875, 0.111328125, -0.10595703125, ...
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Linear regression from a contingency table September 7, 2013 By arthur charpentier This morning, Benoit sent me an email, about an exercise he found in an econometric textbook, about linear regression. Consider the following dataset, Here, variable X denotes the income, and Y the expenses. The goal was to fit a lin...
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Integration modelling task. November 1st 2010, 11:03 PM MickG86 Integration modelling task. Hello, I got this problem here which I can't really solve (Worried) A Contractor is given the task of calculating the cost of a tunnel through a hill. The shape of the tunnel's cross section is made up of two cur...
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stuck with 4 questions May 12th 2009, 08:55 AM #1 Newbie Joined May 2009 Posts 3 stuck with 4 questions hi there, im currently stuck on 4 questions at the moment 1. 9x^2 -14x + 1 = 0 PROVE THE FOLLOWING IDENTITIES 1. Sin2θSecθ≡SinθTanθ 2. tan2 A= sin2 A / 1 - sin2 A 3. 2 - tan2 A...
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Polygon Collision From GPWiki In order to prevent embarrassing situations where game objects move right through each other without even noticing, a lot of games utilize some kind of collision detection system. Often objects are approximated as a circle or ball, or a rectangular axis-aligned box to make it easier to d...
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estimation of series sum September 3rd 2008, 10:41 PM #1 estimation of series sum I'm having problems with this question Estimate $\sum_{n=1}^{\infty}n^{-\frac{3}{2}}$ to within .01 I know I can use the integral test with my remainder estimate being .01 but it would take such a large number to find the ...
5
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Comments on Skin Effect in Solitary Solid Tubular Conductor Advances in Mathematical Physics Volume 2011 (2011), Article ID 983678, 13 pages http://dx.doi.org/10.1155/2011/983678 Research Article Comments on Skin Effect in Solitary Solid Tubular Conductor Faculty of Electrical Engineering and Communication, Brno Uni...
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averages of Euler-phi function and similar up vote 7 down vote favorite 1 What are the odds two numbers are relatively prime? This is known to be $\frac{6}{\pi^2}$. The proof involves calculating averages of the Euler phi function. \[ \phi(1) + \phi(2) + \dots + \phi(n) \ approx 3 \left(\frac{n}{\pi}\right)^2 + O(n \l...
5
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Optimizing the Mixing Proportion with Neural Networks Based on Genetic Algorithms for Recycled Aggregate Concrete Advances in Materials Science and Engineering Volume 2013 (2013), Article ID 527089, 10 pages http://dx.doi.org/10.1155/2013/527089 Research Article Optimizing the Mixing Proportion with Neural Networks B...
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the encyclopedic entry of change of direction In linear algebra , a basis for a vector space of dimension n is a sequence of n vectors α [1] , ..., α [n] with the property that every vector in the space can be expressed uniquely as a linear combination of the basis vectors. Since it is often desirable t...
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linear equations in 2 variables....help please June 10th 2010, 10:44 AM #1 Newbie Joined Jun 2010 Posts 2 linear equations in 2 variables....help please Translate into a pair of linear equations in two variables. solve the equations using elimination or substitution state your answer for specifie...
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Areas of Triangles May 26th 2010, 02:46 AM #1 Junior Member Joined Feb 2009 Posts 63 A parallelogram has two adjacent sides of length 4 cm and 6 cm respectively. If the included angle measures 52 degrees, find the area of the parallelogram. please show all working out. if $a$ and $b$ are the len...
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Difference equation You could start by building your iterations. $y_{n+1}-y_{n}=sin(n)\Rightarrow{y_{1}+y_{0}=sin(0)}\Righta rrow{y_{1}=0}$ $y_{2}-y_{1}=sin(1)\Rightarrow{y_{2}=sin(1)}$ $y_{3}-y_{2}=sin(2)\Rightarrow{y_ {3}-sin(1)=sin(2)}$ $y_{4}-y_{3}=sin(3)\Rightarrow{y_{4}-(sin(2)+sin(1))=sin(3)}$ And so on and so o...
5
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prove it is a subgroup October 13th 2008, 06:12 AM #1 Member Joined Feb 2008 Posts 125 prove it is a subgroup Let G be a group and H be a subgroup of G. Define N(H)={x is a member of G|xHx^-1=H} Prove that N(H) (called normalizer of H) is a subgroup of G. This is a straightforward problem. Just use ...
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Lim sup problem from Halsey Royden, Real Analysis June 5th 2010, 08:31 AM #1 Junior Member Joined Jun 2010 Posts 54 Lim sup problem from Halsey Royden, Real Analysis This is my first post here, looking forward to discussing math stuff with everyone. No one in my family knows anything about Real Analysis,...
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differentiation applying two rules June 28th 2011, 05:50 AM #1 Junior Member Joined Apr 2011 Posts 60 differentiation applying two rules Hi I am fine when it comes to straightforward differntiation but when its composite I mean when you have to apply say product rule and then chain rule etc. I really hav...
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bivariate marginal density function April 7th 2008, 11:08 PM #1 bivariate marginal density function find the marginal density function for $X$ and $Y$. $f(x,y) = \left\{ \begin{array}{rcl}<br /> x+y & \mbox{for} & 0 \leq x \leq 1, 0 \leq y \leq 1 \\ <br /> 0 & \mbox{for} & \mbox{other}<br /> \end{array}\righ...
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A New Distance Measure and Ranking Method for Generalized Trapezoidal Fuzzy Numbers Mathematical Problems in Engineering Volume 2013 (2013), Article ID 623757, 6 pages http://dx.doi.org/10.1155/2013/623757 Research Article A New Distance Measure and Ranking Method for Generalized Trapezoidal Fuzzy Numbers ^1Departme...
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abelian normal group March 23rd 2011, 09:29 AM abhishekkgp abelian normal group Let $G$ be a group of order $3825$. Prove that if $H$ is a normal subgroup of order $17$ in $G$ then $H \leq Z(G)$, where $Z(G)$ represents the center of $G$. (Please do not use sylow's or cauchy's theorems.) March 23rd 2011, 12...
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Interest compounded monthly. October 17th 2010, 04:34 PM flybynight Interest compounded monthly. Hey everyone, I hope this is in the right section. Anyway, the problem I have is "a $200,000 loan is to be repaid over 20 years in equal monthly installments, beginning at the end of the first month. Find the ...
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