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Wave equations May 4th 2011, 07:25 AM #1 Member Joined May 2008 Posts 87 Wave equations First, please forgive the poor notation used here as LaTeX does not seem to be working properly for the time being (http://www.mathhelpforum.com/math-help/f47/working-latex-issues-178319-2.html)? This is a proble...
5
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Superconducting Rectangular Microstrip Patches over Ground Planes with Rectangular Apertures in Substrates Containing Anisotropic Materials International Journal of Antennas and Propagation Volume 2013 (2013), Article ID 169893, 7 pages http://dx.doi.org/10.1155/2013/169893 Research Article Analysis of High Supercon...
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Prove cyclic subroups => cyclic group Prove (or disprove) If G is a group in which every proper subgroup is cyclic, then G is cyclic. Think small! What groups do you know of order < 6? Could an example of $S_3$ be used as proof? I'm not too comfortable with subgroups or cyclic groups yet, but from my understanding, t...
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Minimizing with Lagranges' Multipliers September 18th 2007, 06:18 PM #1 Newbie Joined Sep 2007 Posts 2 Minimizing with Lagranges' Multipliers So this is the exact problem: An industrial container is in the shape of a cylinder with hemispherical ends. The container must hold 1000 liters of fluid. Det...
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Trig Identities Help May 3rd 2009, 03:54 PM #1 Newbie Joined May 2009 Posts 4 Trig Identities Help 1. tan(x+(pi/2)) = -cotx 2. cos^2(x) = csc^2(x)-cot^2(x) / sec^2(x) 3. cosx + cosxtan^2(x) = secx I'm just not good with this stuff. I tried expanding the left side of the first one using sum a...
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Proofs for right/left shift operators October 14th 2010, 11:59 AM #1 Member Joined Jan 2010 Posts 232 Proofs for right/left shift operators This one probably isn't that hard, though right now I'm having some trouble. Suppose $V$ is a vector space over a field $F$. Let $S^+:R^\infty\rightarrow R...
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Tangent Plane Problem April 11th 2010, 10:48 PM #1 Newbie Joined Apr 2010 Posts 13 Tangent Plane Problem I have got stuck on finding the equation for the tangent plane for the equation: yz = ln(x + z), at point (0, 0, 1). What I have done is rearrange to [ ln(x + z) ]/yz = 1, then Fx(...
4
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mathschallenge.net Isosceles Trapezium Problem An isosceles trapezium ABCD is placed inside a semicircle such that they share the same base, AD = 4, and the lengths AB = DC = 1 are chords. Find the length BC. Solution Consider the following diagram. By applying the Pythagorean theorem to right-angle triangles on ...
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simple proof February 17th 2008, 12:28 PM #1 Newbie Joined Feb 2008 Posts 6 simple proof How would you prove this, I'm stuck. Thanks Let A and B be sets. Then A union B = A if and only if B is subset of A. First, you can see from the definition of a subset and from the definition of the union o...
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Design and Optimization of a Monoaxial Tracking System for Photovoltaic Modules Journal of Solar Energy Volume 2013 (2013), Article ID 586302, 6 pages http://dx.doi.org/10.1155/2013/586302 Research Article Design and Optimization of a Monoaxial Tracking System for Photovoltaic Modules Transilvania University of Braş...
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Finding Limits Using L'Hopital's Rule September 3rd 2012, 09:12 AM #1 Junior Member Joined Aug 2012 From Texas Posts 48 Finding Limits Using L'Hopital's Rule Okay I'm trying to find this limit: lim (ln(x))^1/x as x approaches infinity using L'Hopital's rule. This is what I've done so far:...
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Mean-value theorem for integrals??! May 6th 2007, 11:46 PM #1 Mean-value theorem for integrals??! Mean-value theorem for integrals: ======================================== Suppose that f is continuous on [a,b],Then there is a number c on [a,b] such that $\int_a^b f(x)dx=(b-a)f(c)$ ============...
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hard fraction November 12th 2010, 06:45 AM #16 Not quite. What did you do with the (2) and the (3) to get its LCM? That's what you have to do with the (2) and the (x+2) in this situation. okay, would it be 2x+4?!?!?!? There you go. I'd probably write it as 2(x+2) to emphasize how you got it. Now that you...
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I need help with this Algebraic Models problem June 7th 2010, 03:12 PM #1 Newbie Joined Jun 2010 Posts 1 I need help with this Algebraic Models problem A glass butterfly conservatory is a square-based pyramid. The height of the conservatory is one-half he side of the base. The volume is 900 m^3. 1. ...
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Mixed Variables-Attributes Test Plans for Single and Double Mathematical Problems in Engineering Volume 2011 (2011), Article ID 575036, 15 pages http://dx.doi.org/10.1155/2011/575036 Research Article Mixed Variables-Attributes Test Plans for Single and Double Acceptance Sampling under Exponential Distribution School...
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Multiobjective Model for Emergency Resources Allocation Mathematical Problems in Engineering Volume 2013 (2013), Article ID 538695, 6 pages http://dx.doi.org/10.1155/2013/538695 Research Article Multiobjective Model for Emergency Resources Allocation ^1College of Traffic, Jilin University, Changchun 130012, China ^2...
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Superheat formula for charging capilary systems [Archive] - Refrigeration-Engineer.com forums ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ View Full Version : Supe...
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Math Help September 25th 2009, 03:00 PM #1 MHF Contributor Joined May 2008 Posts 2,295 Thanks 7 Limit (6) Suppose $f: [0,\infty) \longrightarrow \mathbb{R}$ is continuous and let $a_n=\int_0^1 f(x+n) \ dx, \ \ n \in \mathbb{N}.$ We know that $\lim_{n\to\infty} a_n=L.$ Evaluate $\lim_{n\to\infty} \ ...
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inverse modulo Find the inverse modulo m of each integer n below: a) n=8 and m=35 b) n=51 and m=99 Hello,Find p such that $8p=1 \bmod 35$ Euclidian division : $35=8 \times 4+3 \implies 3=35-8 \times 4$ $8=3 \times 3-1 \implies 1=3 \times 3-8=3 \times (35-8 \times 4)-8=3 \times 35-12 \times 8-8=3 \ times 35-13 \times 8...
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Linear Programming and systems, HELP ME! :( October 11th 2012, 04:26 PM #1 Newbie Joined Oct 2012 From Bronx Posts 2 This problem is so hard. I can't figure it out! "A gaming manufacturing company has developed a new gaming system. To produce the new system, they plan on using resources in two man...
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Proof involving GCD of numbers April 10th 2008, 03:05 AM p vs np Proof involving GCD of numbers I would like to know of the line of approach one needs to take in the following (and similar problems involving elementary concepts of GCD of numbers)problem. The problem is- For any 2 integers a,b, prove th...
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Correcting test January 27th 2010, 03:48 PM #1 Newbie Joined Jan 2010 From Toronto Posts 4 Correcting test Questions that I need help correcting. 1) In how many ways can a six member committee form a subcommittee with at least two members? 2) A new theme park will have five roller coasters,...
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help me in Prove May 9th 2010, 06:58 AM #1 Newbie Joined Nov 2009 Posts 23 help me in Prove Prove 1) $X$ is a regular space, $A$ compact set and $B$ closed set, $A \bigcap B = {\O}$ Then there is open sets U and V exist, such that $A\subseteq U, \ B \subseteq V,\ A \bigcap B = {\O}$ ...
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Intermediate Algebra July 14th 2008, 02:08 PM #1 Member Joined Apr 2008 Posts 78 Intermediate Algebra Simplify the following radicals. Assume that the variables can represent a positive number. square root of (4x)^2 Would that be 2x? cubed square root of -125d^3 Would that be 5d^3 F...
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Intersection of Lines problem June 2nd 2008, 01:07 PM helpmeinmath Intersection of Lines problem I am studying for an upcoming exam and i came across this question that many of my classmates didt get so heres the question Part A Find the point G at which the normal through the origin intersects the line...
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Isolated singularities (Complex Analysis) October 9th 2008, 10:44 AM #1 Member Joined Mar 2008 Posts 99 Isolated singularities (Complex Analysis) Locate each of the isolated singularities of the given function and tell whether it is a removable singularity, a pole, or an essential singularity. If the sin...
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App of derivatives... Max and min problem solving October 25th 2006, 05:27 PM #1 Newbie Joined Sep 2006 Posts 24 App of derivatives... Max and min problem solving Two sides of a Triangel have lengths of A and B, and the angle between them is Theta what value of Theta will maximixe the triagle's area? HIN...
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Performance Prediction of a Synchronization Link for Distributed Aerospace Wireless Systems The Scientific World Journal Volume 2013 (2013), Article ID 159742, 8 pages http://dx.doi.org/10.1155/2013/159742 Research Article Performance Prediction of a Synchronization Link for Distributed Aerospace Wireless Systems Sc...
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Splitting Fields and Galois Groups March 6th 2012, 08:43 AM #1 Junior Member Joined Jan 2010 Posts 29 Splitting Fields and Galois Groups Hi, I've been set a question and think I've managed about half of it but stuck on some other bits.. Show that $f := x^3 - 3x + 1$ is irreducible over $\mathbb...
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Calculus I Help? Find the Riemman Sum of the integration of x^3 from 1 to 2. Quote: Originally Posted by Nimmy It depends how you want to partion the region. I will partition the region with right-endpoint. Take interval $[1,2]$ divide it in $n$ equal regions. Thus, each one has length $\Delta x=\frac{2-1}{n}=\frac{1}...
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Prime and Factorable Polynomials November 26th 2011, 01:11 PM xivivx Prime and Factorable Polynomials I'm new to factoring. Don't really understand the definition of "prime". I did 47 questions in my homework, but I want to make sure if some are right or wrong. I will answer the questions. Tell me if they a...
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exact values practice question March 12th 2009, 06:03 AM jvignacio exact values practice question Suppose cos A = $-\frac{7}{25}$ and tan B = $\frac{15}{8}$ where A is in the second quadrant and B is in the third quadrant. Find the exact values of: sin(A-B): tan(A-B): any help much app...
4
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Time Synchronization and Performance of BeiDou Satellite Clocks in Orbit International Journal of Navigation and Observation Volume 2013 (2013), Article ID 371450, 5 pages http://dx.doi.org/10.1155/2013/371450 Research Article Time Synchronization and Performance of BeiDou Satellite Clocks in Orbit Beijing Satellite...
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A. A proof for Linear groups Next: Bibliography Up: The Work of Efim Previous: 4 The Proof of A. A proof for Linear groups Let G be a finitely generated subgroup of the group of invertible n×n matrices over complex numbers. We give a proof for the Ordinary Burnside problem first. Let R be the collection of com...
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Self-Propagating Reactive Fronts in Compacts of Multilayered Particles Journal of Nanomaterials Volume 2013 (2013), Article ID 198096, 11 pages http://dx.doi.org/10.1155/2013/198096 Research Article Self-Propagating Reactive Fronts in Compacts of Multilayered Particles ^1Department of Mechanical Engineering, Johns H...
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Algebra problem.... me again The problem is 2 + (1 / y + 1) - (1 / y - 1) = 0 Ok what I did was Mulitply the entire equation by the common denominator of (y + 1)(y - 1). I end up getting 2(y + 1)(y - 1) + y - 1 - y + 1 = 0 From here, I keep working the problem until it gets to ...
4
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Voltage Stability Bifurcation Analysis for AC/DC Systems with VSC-HVDC Abstract and Applied Analysis Volume 2013 (2013), Article ID 387167, 9 pages http://dx.doi.org/10.1155/2013/387167 Research Article Voltage Stability Bifurcation Analysis for AC/DC Systems with VSC-HVDC ^1School of Electrical Engineering and Auto...
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Patent US7408840 - System and method for disambiguating shooter locations This application is a divisional application of U.S. patent application Ser. No. 10/925,875, filed Aug. 24, 2004, now U.S. Pat. No. 7,126,877 and is incorporated by reference herein. GOVERNMENT CONTRACT The U.S. Government has a paid-up license...
4
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Tricky question involving exact differentials January 23rd 2011, 12:26 PM #1 Member Joined Jan 2010 Posts 232 Tricky question involving exact differentials I've been asking around on this question for a bit, and though I have an answer for the first half of it, I'm a little bit iffy on the solidarity of ...
5
[ -0.05322265625, -0.0184326171875, 0.07373046875, 0.006622314453125, 0.06396484375, -0.02734375, -0.00958251953125, 0.0546875, 0.0003337860107421875, -0.008056640625, 0.07275390625, -0.0172119140625, -0.05517578125, 0.0269775390625, -0.07958984375, 0.0146484375, -0.03564453125, -0.0...
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combining/simplifying logs (part 2) October 6th 2009, 10:48 AM Evan.Kimia combining/simplifying logs (part 2) http://img25.imageshack.us/img25/2971/log2vh.jpg Here is the 2nd one which asks to simplify the whole thing as a logarithm. Again, not sure how to take the integers at the end and convert them into ...
4
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Plotting Complex Variables on Argand Diagrams August 8th 2006, 06:38 AM #1 Junior Member Joined Aug 2006 Posts 36 Plotting Complex Variables on Argand Diagrams Hello again guys, I have the following problem: Problem: a) Plot the following complex variables on an Argand diagram (i) 2 +...
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Finance word problem help July 11th 2010, 02:22 PM #1 Newbie Joined Jul 2010 Posts 7 Finance word problem help Can someone please tell me how i solve this ? thanx A couple wants to buy a house and can afford to pay $1400 per month. a) if they can get a loan for 30 years with the interest at 8%...
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Some Properties for Certain Class of Analytic Functions with Varying Arguments International Journal of Analysis Volume 2013 (2013), Article ID 380938, 4 pages http://dx.doi.org/10.1155/2013/380938 Research Article Some Properties for Certain Class of Analytic Functions with Varying Arguments Department of Mathemati...
5
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how to factor this January 19th 2014, 04:27 PM #1 how to factor this 0=2cos^2x + 2*sqrt2 * cos x + 1 When I tried the quadratic formula, the discriminant was equal to zero. So i know this can be factored, but i do not know how to deal with sqrt2. Thank you for your time Re: how to factor this \dis...
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Inverse Laplace Transform November 6th 2009, 05:24 PM #1 Member Joined Oct 2009 Posts 82 Inverse Laplace Transform Hi, I need to find the inverse Laplace transform of $F(s) = s^{-2} \tanh(sT/2)$. I suspect I have to use the period definition for Laplace transforms but I can't see how to ma...
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Starlikeness and Convexity of Generalized Struve Functions Abstract and Applied Analysis Volume 2013 (2013), Article ID 954513, 6 pages http://dx.doi.org/10.1155/2013/954513 Research Article Starlikeness and Convexity of Generalized Struve Functions ^1Department of Mathematics, Faculty of Science and Art, Erzincan U...
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Coordinate geometry Three points have coordinates o(0,0), A(5,0) and B(7,6). If P is the point (x,y) where y>0, calculate the value of x and y given that AP=BP and that the area of the triangle AOP is 10sq. units. Hello, Ilsa! Three points have coordinates: . $O(0,0),\: A(5,0),\:B(7,6)$ If $\,P(x,y)$ where $y>0$, calc...
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simplyfy the following as much as possible April 2nd 2009, 04:52 AM #1 Junior Member Joined Mar 2009 Posts 36 simplyfy the following as much as possible the A and B's represent matrices A(B + A^-1)((B^-1) A) i got A^2 +AB^-1 (A + B)(A^-1 + B^-1) i got 2I + AB^-1 + BA^-1 and [A^3(A^2)^-1]^-1...
5
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A more elegant solution for proving these trig. identities? May 3rd 2009, 07:55 AM smmxwell A more elegant solution for proving these trig. identities? Hi there. I just learnt trigonometry today, and the teacher didn't really delve much into the topic yet, just the basic identities. I can prove these identities ...
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Group whose order is a power of a prime contains an element of order prime February 16th 2011, 09:52 PM #1 Group whose order is a power of a prime contains an element of order prime I don't know how to go about this. So the group has $p^{n}$ elements and I have to somehow use cosets or Langrage's theorem, but I r...
5
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A Sturm-Liouville Problem with a Discontinuous Coefficient and Containing an Eigenparameter in the Boundary Condition Physics Research International Volume 2013 (2013), Article ID 159243, 9 pages http://dx.doi.org/10.1155/2013/159243 Research Article A Sturm-Liouville Problem with a Discontinuous Coefficient and Cont...
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more help needed December 3rd 2009, 05:30 PM #1 Newbie Joined Feb 2009 Posts 8 more help needed find dy/dx of y= ln(x^2 + 9)^4 i know you have to use the chain rule but i really need some help. i've got an exam tomorrow and i don't konw how to do this Remember the properties of logarithms:...
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Humboldt Economic Index Estimating Total County Employment for the Humboldt Economic Index: Two Models by John Manning December 2, 2002 Revised March 31, 2003 Executive Summary Employment is, arguably, the single most important indicator of economic activity. Thus, a timely and accurate estimation of the employment ...
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Coordinate geometry May 2nd 2010, 10:41 PM #1 Super Member Joined Dec 2009 Posts 755 Coordinate geometry Given a straight line BD where point E lies on it. Coordinates $B(0.5,3)$ and $E(1,1)$ Find the coordinates of D given that $BE : ED = 1:3$ and the equation of the line BD is $y=-4x+5$ ...
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implicit differentiation Find $\frac{d^2y}{dx^2}$ by implicit differentiation: $2x^3-3y^2=8$ So far I get $\frac{dy}{dx}=\frac{x^2}{y}$ $\frac{d^2y}{dx^2}=\frac{2y}{x}$ <----- incorrect correct answer= $\frac{2xy^2-x^4}{y^3}$ How do i find the correct answer?
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A Proposed Content-Uniformity Test for Large Sample Sizes - Pharmaceutical Technology Applications of process analytical technology (PAT) for in-process and/or end-product release testing are attracting wide interest from both regulators and the pharmaceutical industry. Nondestructive measurement techniques such as nea...
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Intergration Problem (Substitution I think) January 10th 2010, 05:57 AM #1 Junior Member Joined Dec 2009 Posts 30 Intergration Problem (Substitution I think) I have this integral i need to do in the middle of a engineering question and I have looked in a few directions at it and cant seem to crack it! ...
5
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Real Symmetric Matrix December 30th 2009, 06:00 PM #1 Newbie Joined Dec 2009 From toronto Posts 17 Real Symmetric Matrix Consider the following real symmetric matrix: 0 1 -1 1 0 1 -1 1 0 it has eigenvalues t1=-2,t2=1,t3=1 with corresponding eigenvectors: v1=(1,-1,1)^T v2=...
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Radical functions October 9th 2012, 07:28 PM EASYPEAAZY Radical functions hey everyone, im not here to just get answers because im lazy, im here because i got a 10 page notebook and ive done 90 pct of the questions and just a few is left. This question really confuses me, i just need help to solve it so ...
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Free Vibration of Laminated Composite Hypar Shell Roofs with Cutouts Advances in Acoustics and Vibration Volume 2011 (2011), Article ID 403684, 13 pages http://dx.doi.org/10.1155/2011/403684 Research Article Free Vibration of Laminated Composite Hypar Shell Roofs with Cutouts Department of Civil Engineering, Meghnad...
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The Limit Behavior of a Stochastic Logistic Model with Individual Time-Dependent Rates Journal of Mathematics Volume 2013 (2013), Article ID 502635, 7 pages http://dx.doi.org/10.1155/2013/502635 Research Article The Limit Behavior of a Stochastic Logistic Model with Individual Time-Dependent Rates ^1Institute for Cy...
4
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Relativistic Propagation of Linearly/Circularly Polarized Laser Radiation in Plasmas ISRN Optics Volume 2013 (2013), Article ID 642617, 8 pages http://dx.doi.org/10.1155/2013/642617 Research Article Relativistic Propagation of Linearly/Circularly Polarized Laser Radiation in Plasmas ^1Department of Engineering Physi...
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subgroup question with direct product April 5th 2010, 10:40 AM #1 Junior Member Joined Apr 2010 Posts 43 subgroup question with direct product Let G = Z+Z10 (+ is direct sum) and let H = { g an element of G | |g|=∞ or |g|=1 }. Prove or disprove that H is a subgroup of G. [Subgroups that contain no elemen...
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the encyclopedic entry of Banach, Stefan Banach's match problem is a classic problem in probability attributed to Stefan Banach . Suppose a mathematician carries two matchboxes at all times: one in his left pocket and one in his right. Each time he needs a match, he is equally likely to take it from either pocket...
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C An imprecise probability law is a generalization of probability in which events may have upper and lower probabilities that are not equal. Such a construction may be a more realistic representation of prior ignorance then the (precise) prior distribution of Bayesian inference. Bayes' rule can be applied to im...
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the encyclopedic entry of consonantal all iteration In mathematics, Lyapunov fractals (also known as Markus-Lyapunov fractals) are bifurcational fractals derived from an extension of the logistic map in which the degree of the growth of the population, r, periodically switches between two values A and B. A Lyapunov fr...
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Grade ten math January 18th 2011, 03:31 PM #1 Member Joined Sep 2009 Posts 162 Grade ten math Factor completely: 40x^5y^2 - 32x^7y^6 + 28x^8y^4 - 36x^7y^5 I thought factor completely meant solve for the unknown variable. However, I have no idea what the answer is for this question. I know the gr...
4
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Math problem April 17th 2008, 02:33 PM #1 Junior Member Joined Mar 2008 Posts 41 Math problem We have alternating current in the United Sates. This electric current alternates with a frequency of 60 cycles per second. Suppose that at time of t = 0.02 seconds, the current is at its maximum of l = 5 am...
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change of coordinates April 12th 2010, 02:07 AM #1 Newbie Joined Feb 2010 Posts 8 change of coordinates i tried to use Latex but i failed so here's the problem the double integral of (x^2 + y^2) ^1/2 dx dy the inner limit is from 0 to (3y-y^2)^1/2 and the outer limit is from 0 to 3 i know how to cha...
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Help, it's hard! :-S December 8th 2009, 11:27 AM #1 Newbie Joined Dec 2009 Posts 7 Help, it's hard! :-S In the ring Q[x], consider the polynomials: f(x) = x^5 + 2x^3 + x^2 + x + 1 and g(x) = x^4 + x^3 + x -1 a) Find the greatest common divisor d(x) of f(x) and g(x). b) Find h(x), k(x) eleme...
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Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty Discrete Dynamics in Nature and Society Volume 2014 (2014), Article ID 174927, 8 pages http://dx.doi.org/10.1155/2014/174927 Research Article Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty School of Aeron...
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Tracking Control without Reaching Phase for Nonlinear System Journal of Control Science and Engineering Volume 2013 (2013), Article ID 498461, 7 pages http://dx.doi.org/10.1155/2013/498461 Research Article Optimal Robust Adaptive Fuzzy Tracking Control without Reaching Phase for Nonlinear System LESSI Laboratory, D...
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trigonometry Addition Formulae (ii) January 4th 2007, 03:00 PM #1 Member Joined Jan 2007 Posts 162 trigonometry Addition Formulae (ii) As you may see, I am struggling at this. Show that, for triangle RST, t = r sin (alpha + beta) / sin alpha iv tried using the sine rule, t / sin(180 - a...
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[SOLVED] Year 8 maths. quick June 27th 2008, 03:33 AM #1 Banned Joined Jun 2008 Posts 4 Hi i know this may seem easy but it is confusing. please help!! Both the leftmost digit and the rightmost digit of a four-digit number N are equal to 1. When these digits are removed, the two-digit numbers thus ob...
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A Two-Wheeled Self-Balancing Robot with the Fuzzy PD Control Method Mathematical Problems in Engineering Volume 2012 (2012), Article ID 469491, 13 pages http://dx.doi.org/10.1155/2012/469491 Research Article A Two-Wheeled Self-Balancing Robot with the Fuzzy PD Control Method ^1College of Automation, Harbin Universit...
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First Order Linear Diff. Eqn? May 20th 2008, 09:12 PM #1 Junior Member Joined May 2008 Posts 50 First Order Linear Diff. Eqn? Hi all, I am unsure of what to do with this one. I have been given some conditions in an electric circuit. Due to Kirchoff's law I have calculated the differential equat...
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Integration with Trig March 16th 2010, 04:40 PM #1 Junior Member Joined Feb 2010 Posts 43 Integration with Trig Hi, If you look on the attachment, I cannot understand how to get from the top equation to the second one. I mean, how does 3sin^2(x).cos(x) become just sin^3(x) ??? Is it something t...
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Synchronization of Unified Chaotic Systems Using Sliding Mode Controller Mathematical Problems in Engineering Volume 2012 (2012), Article ID 632712, 10 pages http://dx.doi.org/10.1155/2012/632712 Research Article Synchronization of Unified Chaotic Systems Using Sliding Mode Controller ^1Department of Electrical Engi...
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Analytical Expressions Pertaining to the Concentration of Substrates and Product in Phenol-Polyphenol Oxidase System Immobilized in Laponite Hydrogels: A Reciprocal Competitive Inhibition Process Advances in Physical Chemistry Volume 2012 (2012), Article ID 212818, 11 pages http://dx.doi.org/10.1155/2012/212818 Resear...
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Dynamics and Control of High-Rise Buildings under Multidirectional Wind Loads Smart Materials Research Volume 2011 (2011), Article ID 549621, 15 pages http://dx.doi.org/10.1155/2011/549621 Research Article Dynamics and Control of High-Rise Buildings under Multidirectional Wind Loads ^1Department of Mechanical Engine...
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-Difference Equations with Nonlocal Integral Boundary Conditions Abstract and Applied Analysis Volume 2013 (2013), Article ID 410505, 8 pages http://dx.doi.org/10.1155/2013/410505 Research Article A Study of Nonlinear Fractional -Difference Equations with Nonlocal Integral Boundary Conditions Department of Mathemati...
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Euler problems/11 to 20 From HaskellWiki < Euler problems (Difference between revisions) Lisp (Talk | contribs) (→‎Problem 14: fourth solution does not memoize) ← Older edit ...
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Math Help November 1st 2009, 11:40 AM #1 Member Joined Apr 2009 Posts 190 Graph I need hints on the following questions: 1. Sketch the curve (y2-2)2+(x2-2)2=2. What does it look like? I got 4 circles which kind of merge together where they meet. 2. kx^4=x^3-x Find the real roots when k=...
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Implicit Differentiation September 29th 2012, 06:25 AM #1 Newbie Joined Aug 2012 From Manila, Philippines Posts 24 Thanks 1 Implicit Differentiation I've tried differentiating this over again, and took me a while to get it. but Im not sure, my answer were (1/3, 4/3) heres the question At...
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[SOLVED] some matrices help March 6th 2010, 06:48 AM #1 Junior Member Joined May 2009 Posts 28 [SOLVED] some matrices help hi, some more matrices problems that i can't solve no 1 : a) Find PQ which i did = i can't solve b which is b) Find a matrix X such that PX + Q = P no2) If...
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Controller Design for a Class of Uncertain Lipschitz Nonlinear Systems with Time-Delays Abstract and Applied Analysis Volume 2013 (2013), Article ID 265473, 9 pages http://dx.doi.org/10.1155/2013/265473 Research Article Nonfragile Robust Finite-Time - Controller Design for a Class of Uncertain Lipschitz Nonlinear Sy...
4
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Planar Intersections-Please help May 15th 2010, 04:04 PM #1 Junior Member Joined May 2010 Posts 36 Planar Intersections-Please help Find the equation of the plane that passes through the line of intersection of the planes x - 3y - 2z - 1 = 0 and 2x + 4y + z - 5 = 0 and parallel to the x-axis. Find ...
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Distributed Consensus for Discrete-Time Directed Networks of Multiagents with Time-Delays and Random Communication Links Abstract and Applied Analysis Volume 2013 (2013), Article ID 158731, 9 pages http://dx.doi.org/10.1155/2013/158731 Research Article Distributed Consensus for Discrete-Time Directed Networks of Mult...
4
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A Method for Simulating Burr Type III and Type XII Distributions through ISRN Applied Mathematics Volume 2013 (2013), Article ID 191604, 14 pages http://dx.doi.org/10.1155/2013/191604 Research Article A Method for Simulating Burr Type III and Type XII Distributions through -Moments and -Correlations ^1Department of...
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If the order of a group is prime number then the group is cyclic? February 3rd 2013, 11:21 AM #1 If the order of a group is prime number then the group is cyclic? Let $G$ be a group with a prime number $p$ of elements. If $a \in G$ where $a eq e$, then the order of $a$ is some integer $m eq 1$. But then ...
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Stable Newton-Cotes Formulas The purpose of this page is to propose numerical integration formulas for uniformly spaced data which are numerically stable even for high orders of approximation. We consider widely used Newton-Cotes formulas from the perspective of digital filter analysis exploring their infamous instabi...
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Coordinate geometry April 1st 2008, 06:38 AM Coach Coordinate geometry Dear forum members, I have a following problem A circle touches both the x-axis and the y-axis and passes through the point (1,2). Find the equation of the circle. How many possibilities are there? My solution If the...
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A Note on the Observability of Temporal Boolean Control Network Abstract and Applied Analysis Volume 2013 (2013), Article ID 631639, 9 pages http://dx.doi.org/10.1155/2013/631639 Research Article A Note on the Observability of Temporal Boolean Control Network ^1College of Mathematics, Physics and Information Enginee...
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Effects of Time-Varying Impulses on the Synchronization of Delayed Dynamical Networks Abstract and Applied Analysis Volume 2013 (2013), Article ID 212753, 10 pages http://dx.doi.org/10.1155/2013/212753 Research Article Effects of Time-Varying Impulses on the Synchronization of Delayed Dynamical Networks ^1Faculty of...
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polynomial adding! February 21st 2008, 07:16 PM wildstyle1 polynomial adding! i have a test to assess my skills tommorrow and i need to know how to add polynomials.. could someone walk me through this question and how to come up with an answer... its question 5 of this link (dont worry, the link leads ...
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Math Help May 8th 2009, 03:07 PM #1 Congruence hi I would be grateful if someone could walk me through how exactly to calculate $3^{40}\, (mod 7)$ I know that I can take $3^{40}\, (mod 7) \equiv (3\, (mod 7))^{40}$ How do I proceed? Since 7 is prime we can use fermat little theorem ie ...
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Algebra and Trig Posted by April on Thursday, March 10, 2011 at 1:16pm. Aldo has feet of fencing. He will use it to form three sides of a rectangular garden. The fourth side will be along a house and will not need fencing. What is the maximum area that the garden can have? • Algebra and Trig - Reiny, Thursday, Marc...
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m06 Q 37 Question Stats: 0%0% (00:00)based on 0 sessions suhasrao wrote: There are 6 points on the plain. Any 3 points of these 6 don't lie on the same line. How many unique triangles can be drawn using these 6 points as vertices? 5 10 20 30 60 Why isn't the answer 60. We can choose 1 vertice and there are 5C2 = 1...
4
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Sequences (F#) A sequence is a logical series of elements all of one type. Sequences are particularly useful when you have a large, ordered collection of data but do not necessarily expect to use all the elements. Individual sequence elements are computed only as required, so a sequence can provide better performance ...
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solving the equation Hi there, it would be much appreciated if any one can help me solve this equation 2tan^2x+2sec^2x-secx =12 thanks $\frac{2\sin^2x}{\cos^2x}+\frac{2}{\cos^2x}-\frac{1}{\cos x}=12\Rightarrow 12\cos^2x+\cos x-2\sin^2x-2=0$ Replace $\sin^2x=1-\cos^2x$, then note $\cos x=t$ and solve the quadratic. Can...
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