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sums with lnx April 21st 2008, 05:11 PM #16 $\sum\frac{lnk}{e^{k}}$ so the book is telling me to use the ratio test... and you get $\frac{ln(k+1)}{elnk}=\frac{1}{e}$ so now I guess how would ln(k+1)/lnk go to 1 would be my basic question... all I know is is that ln(n)/n goes to 0 as n goes to ...
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Showing a root is of an equation October 22nd 2009, 10:05 AM #1 Newbie Joined Oct 2009 Posts 16 Showing a root is of an equation Show that 1 is a root of the equation x^3 - 13x + 12 = 0 I can usually do this by dividing the factor in to the equation but I can't seem to work this one out mainly because wh...
4
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Particular soln of Diff EQ February 11th 2008, 09:57 AM #1 Newbie Joined Jan 2008 Posts 16 Particular soln of Diff EQ The eqn is : y" +y' +y = (sin(x))^2 and i'm in need of a particular solution, y(p). I tried y= B/2 - A/2cos(2x)(below) y = B/2 - A/2cos(2x) y' = Asin(2x) y'' =...
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Poisson process on R^2 December 9th 2009, 05:05 PM #1 Senior Member Joined Jan 2009 Posts 404 Poisson process on R^2 Consider a Poisson process of rate λ on R^2. Let N(r) be the number of points in a circle of radius r centered at the origin and Y2 be the distance from the origin to the 2nd closest point...
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Parallelogram Angle Solving March 31st 2010, 01:24 PM #1 Newbie Joined Mar 2010 Posts 13 Parallelogram Angle Solving Basically just find this angle, I used the sine rule and got something like 50.8...etc, And when I rounded it off I got 51. But I dont think its right, Anyone help, I think the r...
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Development and Control of a 5-Axis Reconfigurable Machine Tool Journal of Robotics Volume 2011 (2011), Article ID 583072, 9 pages http://dx.doi.org/10.1155/2011/583072 Research Article Development and Control of a 5-Axis Reconfigurable Machine Tool Department of Engineering, Indiana University—Purdue Universit...
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Optimization Problem. Find a positive number such that the sum of the number and its reciprocal is as small as possible. Let the positive number be x. So we have x > 0 we want x + 1/x to be a minimum. let y = x + 1/x => y' = 1 - 1/x^2 for min, set y' = 0 => 1 - 1/x^2 = 0 => 1/x^2 = 1 => x^2 = 1 => x = +/- 1 => x = 1, ...
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Pythagorean Theorem February 25th 2010, 04:14 AM mark090480 Pythagorean Theorem Cos^2 + Sin^2 = 1 I know that this is just the Pythagorean Theorem, so here we are saying that the radius of the circle is 1? As cos = x ( base) and sin = y ( height ), what happens if the circle's radius is 5. Does this app...
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Real Analysis: Measure Theory, Integration, and Hilbert Spaces Real Analysis is the third volume in the Princeton Lectures in Analysis, a series of four textbooks that aim to present, in an integrated manner, the core areas of analysis. Here the focus is on the development of measure and integration theory, differentia...
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Cutting Affine Moment Invariants Mathematical Problems in Engineering Volume 2012 (2012), Article ID 928161, 12 pages http://dx.doi.org/10.1155/2012/928161 Research Article Cutting Affine Moment Invariants ^1School of Math and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044, Chin...
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Orthogonalization of polynomial June 3rd 2013, 01:33 PM #1 Member Joined Nov 2012 From israel Posts 164 Thanks 2 Orthogonalization of polynomial Hi guys. I have the following base for $\mathbb{R}_2[x]$: $\left \{ 1,x,x^2 \right \}$ I want to orthogonalize this base with respect to the inn...
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System of equations with absolute value February 1st 2006, 04:59 AM #1 Junior Member Joined Dec 2005 Posts 58 System of equations with absolute value I have to solve this system $<br /> \[<br /> \left\{ \begin{array}{l}<br /> \left| {x + y} \right| = 5 \\ <br /> \left| {xy} \right| = 6 \\ <br /> \en...
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New Recursive Representations for the Favard Constants with Application to Multiple Singular Integrals and Summation of Series Abstract and Applied Analysis Volume 2013 (2013), Article ID 523618, 12 pages http://dx.doi.org/10.1155/2013/523618 Research Article New Recursive Representations for the Favard Constants wit...
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find the general solution March 2nd 2009, 04:23 PM #1 Member Joined Feb 2008 Posts 125 find the general solution I am suppose to find a small integral root of the characteristic equation by inspection; then factor by division; and find the general solution of y^(4) + y^(3) -3y''-5y'-2y=0 I am h...
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Help proving statement about determinant February 12th 2013, 11:11 AM #1 Member Joined Nov 2012 From israel Posts 164 Thanks 2 Help proving statement about determinant i need to prove the following: let $A\in \mathbb{R}^{n\times n}$. $rank(A)=n \Leftrightarrow det(A)eq 0$ this is w...
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complex conjugates July 24th 2008, 03:11 AM #1 Newbie Joined Jul 2008 Posts 3 complex conjugates Right, this comes in 2 parts, the 1st part is that this problem is part (b) of a question, in part (a) you are given z= 3+5i however i don't know if you can/need to use this fact for this part of the ques...
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WebDiarios de Motocicleta I saw two recent news items that reflect on Romania. Lance blogs about the ISI Web of Science. I first heard of this thing a few years ago, when the Romanian government instituted paper counting as the means for promotion in any public university. The flavor of paper counting was that you ...
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Michael Isner Michael Isner's 10th Level Magic User Quaternion Spells (Solving rotation problems in XSI 2.0 or greater) ...
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Dynamics of a Stage Structured Pest Control Model in a Polluted Environment with Pulse Pollution Input Journal of Applied Mathematics Volume 2013 (2013), Article ID 678762, 8 pages http://dx.doi.org/10.1155/2013/678762 Research Article Dynamics of a Stage Structured Pest Control Model in a Polluted Environment with P...
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A Theory of Cartesian Product and Factorization of Circulant Graphs Journal of Discrete Mathematics Volume 2013 (2013), Article ID 163740, 10 pages http://dx.doi.org/10.1155/2013/163740 Research Article A Theory of Cartesian Product and Factorization of Circulant Graphs Department of Mathematics, St. Jude's College...
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finidng the general solution February 9th 2010, 01:01 PM bobguy finidng the general solution Find the general solution of the equation: 1= [3y*cos(y^2)*dy/dx] + [3e^(-x) * ycos(y^2) * dy/dx] really really stuck on this, any help would be appreciated! February 9th 2010, 03:35 PM Jester Quote: ...
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Millionaire's Estate January 3rd 2007, 05:14 PM #1 Newbie Joined Nov 2006 From USA Posts 14 Millionaire's Estate The will of an eccentric millionaire reads as follows: "I leave 4/17 of my estate to my son, 7/13 of the remainder to my wife, 2/3 of the remainder to my daughter, and the remaining $2 mil...
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Rotated Ellipse Equation Ellipse is one of basis of mathematics.Ellipse is defined as the curve. The ellipse curve are having a locus of all point. In the rotated ellipse equation the distances are calculated by using the focus point. The focus point are also separated by using the rotated distance called the 2c. Ellip...
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Some quick help on solving rational equations October 16th 2011, 03:56 PM #1 Newbie Joined Oct 2011 Posts 4 Some quick help on solving rational equations How can I solve for X with a question with a form like this : (2/x+1)+5 = 1/x and also x - 5/x = 4 I seem to struggle when they sin...
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Fundamental Theorem of Calculus, Part I May 12th 2010, 04:21 AM SyNtHeSiS Fundamental Theorem of Calculus, Part I For g(x) = ∫ a to x f(t)dt, I would like to know why there is an x at the upper limit and why it not equal to b, what is the difference? May 12th 2010, 04:50 AM HallsofIvy Quote: There's...
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Area of triangle within a triangle January 9th 2013, 12:25 PM TimsBobby2 Area of triangle within a triangle Given a triangle ABC. On the sides: Let R lie one third of the way from A to B. Let S lie one third of the way from B to C. Let T lie one third of the way from C to A. Now connect points RST to make a ...
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deduce values of k for which cubic has three distinct real roots April 10th 2010, 02:03 AM #1 Member Joined Dec 2008 From Australia Posts 161 deduce values of k for which cubic has three distinct real roots Find the equation at the tangent to $y = x^3$ at the point $(t,t^3)$. Hence deduce the va...
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Mimicking General Relativity with Newtonian Dynamics ISRN Mathematical Physics Volume 2012 (2012), Article ID 260951, 15 pages http://dx.doi.org/10.5402/2012/260951 Research Article Mimicking General Relativity with Newtonian Dynamics Instituto de Cosmologia Relatividade Astrofisica (ICRA-Brasil/CBPF) Rua Dr. Xavier...
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Weighted Wilcoxon-Type Rank Test for Interval Censored Data Journal of Applied Mathematics Volume 2013 (2013), Article ID 273954, 8 pages http://dx.doi.org/10.1155/2013/273954 Research Article Weighted Wilcoxon-Type Rank Test for Interval Censored Data ^1Department of Applied Mathematics, National Sun Yat-sen Univer...
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A New Decision Model for Reducing Trim Loss and Inventory in the Paper Industry Journal of Applied Mathematics Volume 2014 (2014), Article ID 987054, 10 pages http://dx.doi.org/10.1155/2014/987054 Research Article A New Decision Model for Reducing Trim Loss and Inventory in the Paper Industry Department of Industria...
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[Calculus]volume of the solid of revolution December 1st 2008, 05:38 PM #1 Newbie Joined Nov 2008 Posts 22 Find the volume of the solid of revolution formed by rotating about the x-axis the region bounded by the curves. I have read textbook but I still don't understand how to solve this problem. ...
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Find another point on the curve with the same tangent. February 20th 2011, 06:54 AM #1 Member Joined Mar 2010 Posts 78 Find another point on the curve with the same tangent. Question: Find the equation of the tangent to $y = 8x^4 + 40x^3 + 26x^2 - 63x + 24$ at the point (3,-15). Find another point o...
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Stability Analysis of Stochastic Markovian Jump Neural Networks with Different Time Scales and Randomly Occurred Nonlinearities Based on Delay-Partitioning Projection Approach Abstract and Applied Analysis Volume 2013 (2013), Article ID 212469, 11 pages http://dx.doi.org/10.1155/2013/212469 Research Article Stability...
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A Note on Generalized Hardy-Sobolev Inequalities International Journal of Analysis Volume 2013 (2013), Article ID 784398, 9 pages http://dx.doi.org/10.1155/2013/784398 Research Article A Note on Generalized Hardy-Sobolev Inequalities Department of Mathematics, Indian Institute of Science, Bangalore 560012, India Re...
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lowering powers May 16th 2010, 07:42 PM reino17 lowering powers rewrite the expression in terms of the first power of cosine sin^4x so far i have (sin^2x)^2 = (1-cos2x/2)^2 = (1-cos2x/2)(1-cos2x/2) =1-cos^2.2x/4 so my question is, is it right? or is there more May 16th 2010, 08...
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Analysis - complex sequences problem? November 25th 2007, 06:39 AM #1 Newbie Joined Nov 2007 Posts 13 Analysis - complex sequences problem? If you let {a_n} be a complex sequence where lim [ |a_n|^(1/n) ] = q i.e. the nth root of the modulus of the terms in the sequence tends to q. (i) show ...
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the encyclopedic entry of excentricity In the study of ellipses and related geometry, various parameters in the distortion of a circle into an ellipse are identified and employed: Aspect ratio, flattening and eccentricity . All of these parameters are ultimately trigonometric functions of the ellipse's modular ang...
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possible to factor?? July 21st 2008, 07:13 AM #1 Newbie Joined Dec 2007 Posts 22 possible to factor?? I used half angle formula to get from sin (x/2) + cos x = 0 --> 2cos^2 x - cos x + 1 = 0, but is it possible to factor? I graphed the original on my calculator and the answer appears to be x=pi,...
4
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College Savings Plan March 26th 2012, 04:57 PM #1 Newbie Joined Mar 2012 From North Bay Posts 4 College Savings Plan Hey Guys, I am trying to figure out this problem dealing with a college savings plan for my kids. Its currently September.....my kids are 14,13, and twins at 11. They are all ...
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Transformation February 1st 2009, 05:25 PM Crazyheaven Transformation The graph of F(X)= X^(1/2), shift down 3 and then reflect off the x-axis I'm getting F(X)=-1(x)^(1/2)-3, but the answer in the book has F(x)= -1(x)^(1/2)+3 When I reflect my y values do I also reflect my shift? February 1st 2009, 11...
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[ -0.0654296875, -0.11669921875, 0.01092529296875, -0.02294921875, -0.006500244140625, -0.11669921875, 0.01171875, -0.0294189453125, 0.0294189453125, 0.05078125, 0.07763671875, -0.025634765625, 0.020751953125, -0.0147705078125, 0.055908203125, 0.00069427490234375, -0.072265625, -0.03...
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Algebraic structures - help with prove or disprove question October 31st 2013, 01:26 AM #1 Member Joined Nov 2012 From israel Posts 164 Thanks 2 Algebraic structures - help with prove or disprove question Hi. I need to prove or disprove the following: 1. Let $B=\left \{ s+tx|s,t\in \math...
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Dimension of moduli space in Lagrangian Floer homology up vote 3 down vote favorite 3 Let $(M,\omega)$ be symplectic manifold with $\omega=c_{1}=0$ on $\pi_{2}M$. Let $\Lambda\subseteq M$ be Lagrangian submanifold. Let $H:M\times S^{1}\rightarrow\mathbf{R}$ be Hamiltonian and $J$ be compatible almost complex structure...
4
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Help simplifiying expression August 26th 2009, 06:07 AM #1 Newbie Joined Aug 2009 Posts 3 Help simplifiying expression Ok, so heres the problem, it asks me to simplify the expression: {(2x-1)^4 * 3(x+3)^2 - 4(2x-1)^3 * 2(x+3)^3} / (2x-1)^8 I was thinking of using binomial therom since it looks...
4
[ 0.03515625, 0.0067138671875, 0.02294921875, 0.03515625, -0.045166015625, 0.030029296875, -0.029541015625, -0.033203125, -0.003173828125, -0.0230712890625, 0.01055908203125, -0.0810546875, 0.0390625, 0.0206298828125, -0.028076171875, 0.076171875, -0.018310546875, 0.08251953125, -0...
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Need help finding the general statement June 25th 2012, 07:17 AM max17 Need help finding the general statement Hi guys first time posting here, not sure if it belongs in this category... But I need help with an internal assessment. 1 1 1 3/2 1 1 6/4 6/4 1 1 10/7 10/6 10/7 1 1 15/11 15/9...
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Product rule for the second derivative November 8th 2012, 05:15 AM #1 Newbie Joined Oct 2012 From Germany Posts 19 Product rule for the second derivative Hello. I have a function d^2(xy)/dy^2. Do I separate the function as (d/dy)(d(xy)/dy) or do I just perform the product rule and apply the doub...
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Exact and Heuristic Methods for Network Completion for Time-Varying Genetic Networks BioMed Research International Volume 2014 (2014), Article ID 684014, 13 pages http://dx.doi.org/10.1155/2014/684014 Research Article Exact and Heuristic Methods for Network Completion for Time-Varying Genetic Networks Bioinformatics...
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Existence and Multiplicity of Homoclinic Orbits for Second-Order Hamiltonian Systems with Superquadratic Potential Abstract and Applied Analysis Volume 2013 (2013), Article ID 328630, 12 pages http://dx.doi.org/10.1155/2013/328630 Research Article Existence and Multiplicity of Homoclinic Orbits for Second-Order Hamil...
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[ -0.11279296875, -0.0045166015625, -0.0002765655517578125, 0.037841796875, 0.00811767578125, 0.111328125, -0.03125, 0.0130615234375, 0.0205078125, -0.07958984375, 0.0439453125, 0.0052490234375, -0.000225067138671875, -0.0029296875, -0.004119873046875, 0.005340576171875, -0.0419921875,...
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complex algebra June 25th 2010, 10:30 PM #1 Member Joined Nov 2009 Posts 107 complex algebra Given that the quadratic equation $(m^2-3m-4)x^2+(m^2+2)x+12=0$ has real roots $\alpha$ and $\beta$ .Find the set of values of m such that $\alpha<-1<\beta$ Attempt: $\alpha+\beta=-[\frac{m+2}{m^2-3m-4}...
5
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nth Derivative in Proof by Induction February 13th 2011, 02:50 AM #1 Member Joined May 2008 Posts 101 Hey, I've been working through some proof by induction problems, and most of them are manageable, but then I saw one which involved differentiation which I have no idea what to do. Could someone pleas...
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Weight of An Astronaut February 2nd 2010, 09:04 AM #1 Banned Joined Dec 2009 From NYC Posts 84 Weight of An Astronaut The weight of an object varies inversely with the square of its distance from the center of the earth. Assume that the radius of the earth is 3960 miles. If an astronaut weighs 180 po...
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simultaneous equation August 23rd 2009, 11:42 AM #1 Member Joined Aug 2009 Posts 211 simultaneous equation hi, can anyone figure out the solution to 4x + 3y = 17 and y = 3/4x - 19/4 and if possible can you show me exactly how you figure it out step by step? thanks for any help ah, in ...
4
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Lipschitz continuous December 2nd 2012, 02:26 PM lahuxixi Lipschitz continuous http://i822.photobucket.com/albums/z...whatisthis.png This question is about lipschitz continuous, i think the way to check if the solutions can be found as fixed points is just differentiating f(t), but i'm not sure about this. C...
5
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Multiplying Fractions January 12th 2011, 05:31 AM #1 Member Joined Jan 2011 Posts 95 Multiplying Fractions Hi All, I'm trying to multiply the below.. $(100*50*10)/(15*10*4) = (50*25*5)/(25*10*n)$ so this would symplify to $50/3 = 50/50n (n)$ leaving $50/3 = n$ But the answer is n ...
4
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Localization Operators and an Uncertainty Principle for the Discrete Short Time Fourier Transform Abstract and Applied Analysis Volume 2014 (2014), Article ID 131459, 6 pages http://dx.doi.org/10.1155/2014/131459 Research Article Localization Operators and an Uncertainty Principle for the Discrete Short Time Fourier ...
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Fwd: [Haskell-cafe] Point-free style shiqi cao shiqicaoml at gmail.com Sun Feb 13 21:29:22 EST 2005 ---------- Forwarded message ---------- From: shiqi cao <shiqicaoml at gmail.com> Date: Sun, 13 Feb 2005 21:25:56 -0500 Subject: Re: [Haskell-cafe] Point-free style To: Tim Docker <timd at macquarie.com.au> On Mon, 1...
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Prove theorem: In FLT chapter May 19th 2009, 06:09 AM #1 Junior Member Joined May 2009 Posts 25 Prove theorem: In FLT chapter My final is today and I need help! Prove the theorem: The only solutions in non-negative integers of the equation x^2+2y^2=z^2, with gcd(x, y, z)=1 are given by x=+-(2s^2-t^2...
4
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Power set,bijection and binomial coefficient August 20th 2011, 05:16 AM #1 Junior Member Joined Jan 2011 Posts 45 Power set,bijection and binomial coefficient Let N={1,2.....n} .Define the Power set of N,P(N), and show that the map f:P(N)->P(N) defined by taking A to belong to P(N) to N\A is a biject...
4
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Nonlinear inequality February 1st 2009, 06:56 PM #1 Junior Member Joined Jan 2009 Posts 40 Nonlinear inequality Solve the nonlinear inequality. Express the solution using interval notation and graph the solution set. I am stuck on where the line should start, I know it is a positive infinity, it ap...
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Proving inequalities June 15th 2012, 07:19 AM #1 Proving inequalities Let a,b, c be non-negative real nos. such that a+b+c=1. Prove that a^2+b^2+c^2+sqrt(12abc)<=1. Please help me with this one. I don't really have an idea how to prove inequalities. TY. Re: Proving inequalities Given $a+b+c = 1$, squar...
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A Neuro-Fuzzy Controller for Collaborative Applications in Robotics Using LabVIEW Applied Computational Intelligence and Soft Computing Volume 2009 (2009), Article ID 657095, 9 pages http://dx.doi.org/10.1155/2009/657095 Research Article A Neuro-Fuzzy Controller for Collaborative Applications in Robotics Using LabVIE...
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the encyclopedic entry of luminosity Luminosity has different meanings in several different fields of science. In photometry and color imaging In photometry , luminosity is sometimes incorrectly used to refer to luminance , which is the density of luminous intensity in a given direction. The SI unit for lu...
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the encyclopedic entry of deontic logic Deontic logic is the field of logic that is concerned with obligation , permission , and related concepts. Alternatively, a deontic logic is a formal system that attempts to capture the essential logical features of these concepts. Typically, a deontic logic uses OA to m...
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Solving this probem... Hi First you have to define the values of x for which √(2x-1) and √(x+3) are defined : [1/2 , +oo[ Then √(2x-1) - √(x+3) = 1 √(2x-1) = 1 - √(x+3) Square 2x-1 = x+4 - 2√(x+3) x-5 = 2√(x+3) Square (x-5)² = 4(x+3) x²-14x+13=0 (x-1)(x-13)=0 x=1 or x=13 You have now to verify by substituting the two v...
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foil nightmare within mods September 26th 2007, 10:46 AM #1 Newbie Joined Sep 2007 Posts 14 foil nightmare within mods Alright, the problem goes as follows in mod 5, compute (a+b)^5 in mod 3 compute (a+b)^3 in mod 2 compute (a+b)^2 in mod 4 compute (a+b)^4 in mod 7 compute (a+b)^7 ...
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A Node Model Capturing Turning Lane Capacity and Physical Queuing for the Dynamic Network Loading Problem Mathematical Problems in Engineering Volume 2012 (2012), Article ID 542459, 14 pages http://dx.doi.org/10.1155/2012/542459 Research Article A Node Model Capturing Turning Lane Capacity and Physical Queuing for th...
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Normalization Constant I think you mean $e^{-1.5x^2}$ because the former does not convergene when we take the integral. We need to find a constant ("normalization") $k$ so that: $k\int_{-\infty}^{\infty} e^{-1.5x^2} dx = 1$ In order to turn it into a probability density function. Thus, $k\int_{-\infty}^{\infty} e^{-(\s...
5
[ 0.01043701171875, -0.005645751953125, 0.05224609375, 0.00096893310546875, -0.0341796875, -0.095703125, 0.0380859375, -0.0223388671875, -0.0029296875, 0.046875, 0.052490234375, -0.0076904296875, 0.060791015625, 0.0216064453125, -0.09375, -0.06201171875, 0.03173828125, -0.05004882812...
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A non-typable if-expression [Prev][Next][Index][Thread] A non-typable if-expression • To: types <types@cs.indiana.edu> • Subject: A non-typable if-expression • From: Gang CHEN <Chen.Gang@ens.fr> • Date: Wed, 01 Jul 1998 18:40:34 +0200 • Delivery-Date: Wed, 01 Jul 1998 11:49:52 -0500 Dear All, To my surpri...
4
[ -0.045654296875, -0.02392578125, 0.06005859375, -0.055419921875, -0.01361083984375, -0.037841796875, -0.02685546875, 0.0277099609375, 0.0218505859375, 0.07421875, -0.01495361328125, -0.017822265625, 0.054931640625, 0.054443359375, 0.04638671875, 0.0201416015625, 0.06298828125, -0.0...
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need help with trig proof thing!!!!!!!!!!!! how do u prove : sec(A-B) = cos(A+B) / ( cosA^2 - sinB^2 ) Use the subtraction and addition formulas. rewrite the left side as: $\frac{1}{cosAcosB+sinAsinB}$ Multiply top and bottom by $cosAcosB-sinAsinB$ and you should be able to hammer it into the right side. $\frac{1}{cos...
4
[ -0.06787109375, 0.08447265625, -0.007476806640625, -0.029541015625, -0.03955078125, 0.0062255859375, -0.03955078125, -0.04638671875, 0.0302734375, 0.0274658203125, 0.040283203125, -0.04443359375, -0.0086669921875, 0.043212890625, 0.0311279296875, 0.0059814453125, 0.03466796875, 0.0...
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Long & synthetic division March 3rd 2009, 05:09 AM #1 Long & synthetic division Hi Guys! I'm new - very glad I found this. I have a prescribed textbook for my math course - in the back they only give you answers to the problems but do not show how they got the answer - so its difficult to trace your step...
4
[ -0.0152587890625, 0.01806640625, 0.0120849609375, 0.07421875, 0.051513671875, -0.01171875, -0.0390625, -0.041015625, 0.007049560546875, -0.041015625, 0.044677734375, -0.0294189453125, 0.012451171875, 0.06591796875, -0.0341796875, 0.03369140625, -0.0771484375, 0.0634765625, -0.121...
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Hint at solving an integral, please? April 6th 2011, 12:18 PM #1 Hint at solving an integral, please? Hello. $\displaystyle \[I(p) = \int\limits_0^{ + \infty } {\frac{{{x^{p - 1}} \cdot \ln (x)}}{{x + 1}}dx} \]$ and $\displaystyle \[\frac{d}{{dp}}I(p) = \int\limits_0^{ + \infty } {\frac{{{x^{p - 1}...
5
[ 0.010986328125, 0.051513671875, 0.058837890625, -0.049072265625, 0.076171875, -0.027587890625, 0.0157470703125, 0.0186767578125, -0.000579833984375, 0.06103515625, -0.032958984375, 0.03173828125, -0.044921875, 0.11181640625, -0.04150390625, -0.0157470703125, -0.04638671875, 0.00509...
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Project Euler 68: Maximum string for a "magic" 5-gon ring? | MathBlog Project Euler 68: What is the maximum 16-digit string for a “magic” 5-gon ring? Written by Kristian on 29 October 2011 Topics: Project Euler We have now been dealing with continued fractions for a good while, except for the last problem which w...
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[ -0.013427734375, 0.00146484375, -0.0703125, -0.1220703125, -0.056396484375, -0.0142822265625, 0.0181884765625, 0.06298828125, -0.0673828125, -0.0625, -0.06591796875, 0.0478515625, -0.0081787109375, -0.00762939453125, -0.0693359375, 0.0247802734375, -0.0537109375, -0.004547119140625...
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find the velocity vector for an object June 16th 2012, 11:01 AM #1 Member Joined Aug 2011 Posts 117 find the velocity vector for an object find the velocity vector for an object having $\vec a(t) = e^t \hat{j} -32 \hat{k}$ if $v(0) = 3 \hat{i} - 2 \hat{j} + \hat{k}$ Im not sure how to...
5
[ 0.036376953125, 0.07275390625, -0.0439453125, -0.058837890625, -0.0032501220703125, 0.0103759765625, -0.062255859375, -0.002227783203125, -0.0498046875, 0.12890625, 0.038818359375, -0.0966796875, -0.0242919921875, 0.0164794921875, 0.011474609375, -0.0439453125, 0.00616455078125, 0....
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Differentiate using implicit differentiation November 5th 2006, 06:15 AM #1 Newbie Joined Nov 2006 Posts 5 Differentiate using implicit differentiation find dy/dx (3xy)^(1/2)=3x-2y Can't seem to get the solution. May be making a mistake using the chain rule, but I my steps seem correct to me. Would ...
5
[ -0.0208740234375, -0.0595703125, 0.0108642578125, -0.00164794921875, -0.044677734375, -0.0289306640625, -0.038330078125, -0.064453125, 0.03759765625, 0.0458984375, 0.0986328125, 0.00860595703125, 0.0400390625, 0.035400390625, 0.072265625, 0.018798828125, -0.08740234375, -0.00958251...
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Math Help December 20th 2006, 07:17 PM #1 Newbie Joined Dec 2006 Posts 8 z mod 6 why isnt Z mod 6 a field? this is an extra credit problem in my pre-calc class... I know that it must abide to the field axioms(am i right?) but mostly i dont understand the form Z mod 6 Okay, the basic ...
5
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Chessboard problem. Olympiad question. March 8th 2012, 09:48 AM #1 Chessboard problem. Olympiad question. Place the integers $1,2,3, \ldots, n^2$(without duplication) on an $n \times n$ chessboard, with one integer per square. Show that there exist two adjacent entries such that their difference is at least $...
4
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Fuzzy Reliability in Spatial Databases Advances in Fuzzy Systems Volume 2013 (2013), Article ID 107358, 9 pages http://dx.doi.org/10.1155/2013/107358 Research Article Fuzzy Reliability in Spatial Databases ^1Università degli Studi di Napoli Federico II, Dipartimento di Architettura, Via Monteoliveto 3, 80134 Napoli,...
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[ 0.07373046875, -0.0859375, 0.078125, 0.0159912109375, -0.06591796875, -0.020751953125, 0.04052734375, -0.020263671875, -0.0252685546875, 0.00457763671875, -0.0145263671875, -0.024169921875, 0.07080078125, 0.06982421875, -0.109375, -0.0189208984375, 0.048828125, -0.08056640625, -0...
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Find each derivative in simplest factored form December 17th 2009, 09:24 AM #1 Newbie Joined Sep 2009 Posts 8 Find each derivative in simplest factored form Hi, I'm having some trouble with these problems. 1. $f(x) = 3sin(cos4x)$ 2. $f(x) = 5cos(sin(sin(4x^2)))$ 3. $f(x) = sin^2(3x^2)$ ...
5
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Synthetic Amplitude Spectrum and Its Extensions for Analyzing the Two Perpendicular Directional Vibration Displacement Signals of a Rotating Rotor Advances in Mechanical Engineering Volume 2013 (2013), Article ID 218576, 7 pages http://dx.doi.org/10.1155/2013/218576 Research Article Synthetic Amplitude Spectrum and I...
4
[ -0.0869140625, 0.031982421875, 0.0169677734375, -0.06298828125, -0.09716796875, 0.005462646484375, -0.1015625, 0.00897216796875, 0.07958984375, -0.0299072265625, 0.06884765625, -0.01141357421875, 0.006866455078125, -0.033203125, -0.005523681640625, 0.0284423828125, 0.032470703125, ...
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PDF of discrete RV sum? October 25th 2009, 06:35 PM #1 Newbie Joined Oct 2009 Posts 5 Let's say I choose a number between 1-4 and the probability of choosing each number is as such: p(1)=0.35 p(2)=0.25 p(3)=0.15 p(4)=0.25 I do this 100 times. Let X be the sum of all the numbers I pic...
5
[ 0.0196533203125, 0.046630859375, 0.029052734375, -0.09619140625, -0.011962890625, -0.087890625, 0.06640625, 0.003997802734375, 0.00836181640625, 0.0927734375, 0.007568359375, -0.057373046875, 0.0703125, 0.048583984375, 0.02197265625, 0.0038299560546875, 0.058837890625, -0.060791015...
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Analytical Solution of Non-Isothermal Diffusion-Reaction Processes and Effectiveness Factors ISRN Physical Chemistry Volume 2013 (2013), Article ID 487240, 14 pages http://dx.doi.org/10.1155/2013/487240 Research Article Analytical Solution of Non-Isothermal Diffusion-Reaction Processes and Effectiveness Factors Depa...
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[ -0.0712890625, -0.055419921875, -0.01068115234375, 0.021484375, 0.0033721923828125, -0.04345703125, -0.0264892578125, 0.04931640625, 0.015869140625, -0.056396484375, -0.00799560546875, -0.0517578125, 0.005706787109375, -0.010498046875, 0.00153350830078125, -0.042724609375, 0.00994873...
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Oh, Stuart September 5th 2013, 08:17 PM Hell0 Oh, Stuart A rectangular lawn is 40m wide and 60 m long. Stuart mows all the way along the perimeter of the lawn, leaving only 1,500 square meters to be mowed in the center of the lawn. How wide is the strip of lawn that Stuart has already mowed? September 5th 2...
4
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Lost about a probability problem April 22nd 2008, 12:30 AM #1 Newbie Joined Apr 2008 Posts 1 Lost about a probability problem Hey there, this is such a great forum, so happy I found it! I honestly have no idea whatsoever how to solve the two problems (except for the theorem prrof, that's straight forward...
5
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Polynomial division vs synthetic division April 8th 2009, 04:41 PM #1 Junior Member Joined Oct 2008 Posts 34 Polynomial division vs synthetic division If I am simplifing an expression in which I cannot factor I can use polynomial division, I can also use synethic division to get the same answer. I know t...
4
[ -0.033203125, -0.041748046875, 0.00537109375, 0.0419921875, 0.02783203125, -0.0220947265625, -0.050537109375, -0.0264892578125, 0.036376953125, 0.00750732421875, -0.010986328125, 0.002960205078125, 0.0128173828125, 0.1318359375, -0.0018310546875, -0.018798828125, -0.08935546875, 0....
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Probability with Z Score March 20th 2011, 12:48 PM NecroWinter Probability with Z Score Hey there, I have two fairly simple questions for you, one I have an answer that id like checked, the other I need more help with :) Women's Weight are normally distributed with a mean of 143 & a standard deviation of 29...
4
[ 0.01031494140625, 0.06396484375, -0.000904083251953125, 0.014892578125, -0.030517578125, -0.032958984375, 0.046142578125, 0.039794921875, -0.08349609375, 0.03955078125, 0.053466796875, -0.0625, 0.0771484375, -0.0108642578125, 0.01171875, -0.0230712890625, 0.040771484375, -0.0363769...
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Measurable functions © 2001-2007 Prof. Dr. Hans Wilhelm Alt, University Bonn, Germany Measurable functions [chap:MeasurableFunctions] ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ This is an english version of the script│ You may switch to the original german versio...
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[ -0.068359375, 0.00010538101196289062, 0.00494384765625, -0.03759765625, 0.0908203125, 0.05908203125, 0.054443359375, 0.087890625, -0.0791015625, 0.0166015625, -0.1220703125, 0.05517578125, -0.0086669921875, 0.0281982421875, -0.068359375, -0.080078125, 0.0223388671875, -0.009765625,...
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Weakly Compatible Maps Using E.A. and (CLR) Properties in Complex Valued Journal of Complex Systems Volume 2013 (2013), Article ID 939607, 6 pages http://dx.doi.org/10.1155/2013/939607 Research Article Weakly Compatible Maps Using E.A. and (CLR) Properties in Complex Valued -Metric Spaces ^1Department of Mathemati...
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partial fraction did wrongly... December 2nd 2009, 05:32 AM xcluded partial fraction did wrongly... Hi pals , possible to check where did i went wrong ? 2 / s(1 + s^2) = A/s + B/(1 + s^2) then , 2 = A(1 + s^2) + Bs when s = 0 , A = 2 when s = 1 and A = 2 , B = -2 however i could not get B...
4
[ -0.0654296875, 0.034912109375, 0.046630859375, 0.09814453125, 0.06884765625, 0.05322265625, -0.05859375, 0.0279541015625, -0.01409912109375, -0.060546875, 0.0693359375, -0.059326171875, 0.004241943359375, 0.0269775390625, -0.0654296875, -0.051513671875, 0.054443359375, 0.0019302368...
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Write the expression ... in the form ... October 16th 2012, 11:41 AM TheCracker Write the expression ... in the form ... I kinda don't understand that assignement, can someone help me with it please? What do I need to do? http://imageshack.us/a/img717/650/clipboard01jzd.jpg Uploaded with ImageShack.us...
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[ -0.01025390625, 0.10986328125, -0.032470703125, 0.06787109375, -0.0145263671875, 0.04248046875, -0.007232666015625, 0.0654296875, -0.0146484375, 0.029296875, -0.07177734375, -0.01348876953125, 0.0233154296875, -0.0106201171875, -0.04931640625, 0.043701171875, -0.1162109375, 0.05224...
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Can anyone solve this algebra problem? Need to simplify. I keep getting 1, but apparently that is wrong. Thanks in advance! Image - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting $\frac{9{y^2}-12y+4}{(3y-2)^2} = \frac{9{y^2}-12y+4}{9{y^2}-12y+4} = 1$ OR $\frac{9{y^2}-12y+4}{(3y-2)^2} = \frac{(3y-2)^2}{(3y...
4
[ -0.0108642578125, 0.06640625, -0.0220947265625, 0.0289306640625, -0.004241943359375, 0.012451171875, -0.06494140625, 0.0015106201171875, 0.0255126953125, -0.0216064453125, 0.0201416015625, -0.022216796875, 0.01190185546875, 0.06494140625, -0.00787353515625, 0.0751953125, -0.081542968...
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How to find unit vector July 2nd 2012, 11:19 AM #1 Member Joined Jan 2010 Posts 106 Thanks 2 How to find unit vector Say for example v = <3,4> I was taught to divide each component by the magnitude in order to get the unit vector, i.e. 3^2 + 4^2 = ||v||^2 5 = ||v|| So the unit vect...
4
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Proposition 14 Equal straight lines in a circle are equally distant from the center, and those which are equally distant from the center equal one another. Let AB and CD be equal straight lines in a circle ABDC. I say that AB and CD are equally distant from the center. Take the center E of the circle ABDC. Draw EF ...
4
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integral with e to the sq. x September 3rd 2007, 04:24 PM #1 Member Joined Aug 2007 Posts 148 integral with e to the sq. x Hi, To solve the int. 1 to 4 e to the sq. x dx you would first do a u substitution, right? u=e to the x to the 1/2 du=e to the x(1-2x to the -1/2) Is this correct...
5
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model Tusscher-Noble-Noble-Panfilov (TNNP) model The cell membrane is modeled as a capacitor connected in parallel with variable resistances and batteries representing the different ionic currents and pumps dV/dt = -I[ion ]/C[m] , where C[m] = 2 μF/cm^2 is cell capacitance per unit surface area. Membrane currents I[...
4
[ -0.09765625, -0.04443359375, 0.01446533203125, -0.00052642822265625, -0.032958984375, -0.0025787353515625, 0.07177734375, 0.059326171875, 0.0203857421875, 0.032470703125, 0.0242919921875, -0.0947265625, 0.0380859375, 0.08349609375, -0.072265625, -0.0145263671875, -0.0546875, 0.0314...
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-Contractive Mappings in Partially Ordered Abstract and Applied Analysis Volume 2012 (2012), Article ID 701910, 18 pages http://dx.doi.org/10.1155/2012/701910 Research Article On Generalized Weakly -Contractive Mappings in Partially Ordered -Metric Spaces Department of Mathematics, Karaj Branch, Islamic Azad Univer...
5
[ -0.0093994140625, 0.05224609375, 0.02197265625, -0.0830078125, -0.06982421875, 0.0693359375, -0.00093841552734375, 0.004608154296875, 0.061767578125, -0.0308837890625, 0.0081787109375, 0.02880859375, 0.0732421875, 0.0263671875, 0.031982421875, -0.01904296875, 0.0220947265625, -0.04...
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Exploiting geometric series with power series to find Taylors series September 28th 2010, 05:34 PM jegues Exploiting geometric series with power series to find Taylors series I'm confused between some formulae so I'm going to give some examples and you can let me know if what I'm writing is correct. Find th...
5
[ -0.02880859375, -0.10009765625, -0.07275390625, 0.04345703125, -0.0059814453125, -0.0576171875, -0.0281982421875, -0.04931640625, 0.0478515625, 0.0294189453125, -0.0091552734375, -0.12158203125, 0.0022125244140625, -0.0186767578125, -0.031494140625, -0.03369140625, -0.0216064453125, ...
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Combinatoric sequence, please help me September 1st 2007, 07:45 AM Ununuquantium Combinatoric sequence, please help me We have a integer sequence: $a_{1}$, $a_{2}$, $a_{3}$, .... and we have $a_{1}=1$ $a_{2}=2$. $a_{n}=3a_{n - 1}+5a_{n - 2}$ $n=3,4,5....$ Does exist integer number $x\geqslant...
5
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laplace equation September 6th 2008, 01:41 PM georgel laplace equation I have to solve this: $\Delta u(x, y)=0$ $u(0, y)=0$ $u(x,0)=1$ I've tried separation of variables, $u(x, y)=X(x)*Y(y)$ and got $X=C*sin \lambda x$ What next? Is that even the right way to go? Do I have to homoge...
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The Shroud of Turin November 13th 2007, 08:08 AM #1 Junior Member Joined Nov 2007 From New York City Posts 36 The Shroud of Turin The mathematical law is that the rate of decay of C14 is proportional to the quanitity of C14. That is, C14' = -kC14. Let t=0 be the year that the cotton for the shro...
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Find the indefinite integral September 25th 2010, 10:55 AM #1 Junior Member Joined Feb 2010 Posts 52 Find the indefinite integral Hi again $\int \frac{\sqrt{x}}{x-1}~dx$ it seems none of the u subsitution of $\sqrt{x}, x-1, x$ works some hints would be greatly appreciated =) $x-1=\lef...
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Math Help I'm pretty sure that the numbers are all divisible by 11, and therefore composite (since they are all greater than 11). I'm not sure how to prove divisibility, though. --Kevin C. This is not true if n is a multiple of 5, because $5^5\equiv1\!\!\!\pmod{11}$ and therefore $1+5^{5k}+5^{10k}+5^{15k}+5^{20k} \eq...
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