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boat in water, force vectors A boat heads in the direction N 40 degrees W at a speed of 24 knots. The current runs at 6 knots in the direction N 25 degrees E. Find the resultant speed and direction of the boat. Hello, Mr_Green! I must assume you are familiar with vectors. A boat heads in the direction N 40Β° W at a spe...
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integral: partial fractions...? March 7th 2013, 05:16 PM infraRed integral: partial fractions...? Hi. I'm reviewing for my Calc II mid-term. I'm hoping for at least a 65% this time. :( Anyway, I'm not quite sure about this review question from the section on partial fractions: $\int{\frac{x^2+5}{x^3-x^...
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Abelian implies nilpotent From Groupprops DIRECT: The fact or result stated in this article has a trivial/direct/straightforward proof provided we use the correct definitions of the terms involved View other results with direct proofs VIEW FACTS USING THIS: This article gives the statement and possibl...
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Patent US4860265 - Seismic trace restoration using F-K filtering BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to seismic exploration and more particularly, to a method for correctly restoring seismic traces using F-K filtering. This invention further relates to a method for restoring c...
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Prove Closed Neighborhoods in R's Topologies September 11th 2012, 09:03 AM Kiefer Prove Closed Neighborhoods in R's Topologies (1) For any point p, where p is an element of R, {p} is an open-and-closed neighborhood of p in R* R represents the real numbers R*={A is a subset of R|a is an element of A impli...
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Initial Value Problem January 14th 2009, 08:57 AM Aryth Initial Value Problem Let $c > 0$. Show that the function $\phi(x) = (c^2 - x^2)^{-1}$ is a solution to the initial value problem $\frac{dy}{dx} = 2xy^2$, $y(0) = \frac{1}{c^2}$, on the interval $-c < x < c$. Note that this solution becomes unbounded as...
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Euler problems/31 to 40 From HaskellWiki Investigating combinations of English currency denominations. Solution: This is the naive doubly recursive solution. Speed would be greatly improved by use of memoization, dynamic programming, or the closed form. problem_31 = ways [1,2,5,10,20,50,100,200] !!200 where ways...
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I can't figure this out... October 29th 2008, 01:07 PM greenpumpkins I can't figure this out... Assume the random variable X is normally distrubted with mean = 50 and standard deviation = 7. Compute its probability. P(34 < X < 61)? October 29th 2008, 02:48 PM CaptainBlack Quote: Compute the z-s...
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pline Go to the first, previous, next, last section, table of contents. This chapter describes functions for the computation of smoothing basis splines (B-splines). A smoothing spline differs from an interpolating spline in that the resulting curve is not required to pass through each datapoint. See section Interpolat...
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parametric derivative If x=t^3, y=2t^2 for t>0, then what does d^2y/dx^2 equal? $\frac{dy}{dx} = \frac{dy}{dt} \cdot \frac{dt}{dx}$ $\frac{d^2y}{dx^2} = \frac{d}{dt} \left ( \frac{dy}{dx} \right ) \cdot \frac{dt}{dx}$ This is what the question is asking. $\frac{{d^2 y}}{{dx^2 }} = \frac{d}{{dx}}\left( {\frac{{dy}}{{d...
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Bacteria growth March 11th 2009, 08:41 PM #1 Newbie Joined Mar 2009 Posts 23 Bacteria growth A type of bacteria increases continuously at a rate proportional to the number present. If there are 1000 present at a given time and 2000 present two hours later, how many hours (from the initial time) will ...
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One Last question about ellipse February 8th 2007, 05:57 AM #1 Senior Member Joined Jul 2006 From Shabu City Posts 381 One Last question about ellipse The perimeter of a triangle is 30 and the points (0,5) & (0, -5) are two of the vertices. Find the graph of the third vertex. Answer - $\frac{x^2...
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solve this trig equation April 6th 2010, 03:38 PM magmagod solve this trig equation sin2x + sqrt 2/2 = 0 i moved sqrt 2/2 to the other side..then i found the inverse of sin for 2x...then i got the quadrant values, dividing each one by 2...after than i added the period (pi/2) to the results giving the fi...
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Moment of inertia of a hollow sphere chickendude [tex]\frac{mR^2}{2} \int_{0}^{\pi}\sin^3\phi d\phi[/tex] That integral evaluates to 4/3, and bam, it works Thanks a lot How would you get 4/3 for the intergral, i used substitution rule and always got 2/3 for the answer. ∫_0^Ο€β–’γ€–sinγ€—^3 Ο• dΟ•=∫_0^Ο€β–’γ€–(1-γ€–cosγ€—^2 Ο•)γ€—sinΟ•...
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Service level definition and formula (inventory) By Joannès Vermorel, last revised January 2012 Service level (inventory) represents the expected probability of not hitting a stock-out. This percentage is required to compute the safety stock . Intuitively, the service level represents a trade-off between the cost of...
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Micromechanical Formulation of the Yield Surface in the Plasticity of Granular Materials Journal of Applied Mathematics VolumeΒ 2013Β (2013), Article IDΒ 385278, 7 pages http://dx.doi.org/10.1155/2013/385278 Research Article Micromechanical Formulation of the Yield Surface in the Plasticity of Granular Materials ^1Univ...
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Simplifying natural logarithm April 8th 2008, 04:46 PM #1 Member Joined Feb 2008 Posts 97 Simplifying natural logarithm Trying to simplify the derivative of this to find a constant, y = ln[{lnx/A}/{1-[lnx/A]}] The best I can is get to y'=ln[lnx/{A-lnx}] Any ideas? Ok here is what you...
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isolate terms in vector equation? December 11th 2009, 05:44 AM #1 Newbie Joined Oct 2009 Posts 7 isolate terms in vector equation? A traffic light weighing 22 lbs is hanging from a cable on the right at 60 degrees (force vector T1) and a cable on the left at 45 degrees (force vector T2). From this we get...
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Option Pricing Examples In this section, I explore the implications of theorems 5 and 6 through the use of three option pricing examples. In the first, I consider how options are priced in the example from sections 4 and 5. In the second, I use a binomial option model. In the third, I use a continuous time diffusion mo...
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On the Convergence of the Homotopy Analysis Method for Inner-Resonance of Tangent Nonlinear Cushioning Packaging System with Critical Components Abstract and Applied Analysis VolumeΒ 2013Β (2013), Article IDΒ 424510, 10 pages http://dx.doi.org/10.1155/2013/424510 Research Article On the Convergence of the Homotopy Analy...
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Proving a property of the cross/dot products? October 28th 2012, 01:41 PM #1 Newbie Joined Oct 2012 From Edmonton Posts 13 Proving a property of the cross/dot products? 1. Prove that u DOT (v CROSS w)= ( u CROSS v) DOT w . Can you give criterion for when this product is zero, based on the directions...
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Math Help May 22nd 2008, 12:56 AM #1 Newbie Joined May 2008 Posts 13 Extrema Hello, yesterday we had a test of calculus and one question was: Find and classify the extreme of h(x,y)=(1+1/(x))*(1+1/(y))*(1/(x)+1/(y)) I have absolutely no idea how to solve this thing. Can someone help m...
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Vectors - area of parallelogram March 17th 2011, 12:31 PM #1 Member Joined Oct 2009 Posts 80 Vectors - area of parallelogram Find an area of a parallelogram determined by the points P(7,-5,5), Q(-5,10,10), R(-8,8,-4) and S(-20,23,1). --> PQ = -12i + 15j + 5k --> RS = -12i + 15j + 5k ...
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Confused about undefined values December 29th 2012, 05:15 PM kinhew93 Confused about undefined values If I have an equation such as y = (3x(1-x))/(1-x) this simplifies to y = 3x? but if x = 1 the first equation is undefined though for the second y = 3 could somebody please explain what is going on here...
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Logarithms? September 16th 2009, 02:35 PM #1 Member Joined Oct 2008 Posts 80 Logarithms? Somehow this is on my chemistry homework, and we managed to skip logarithms in my algebra II class. I've looked up logarithms, and it seems to me like these problems are missing something, but you decide: Fi...
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Find the area of the shaded region... February 25th 2010, 07:49 AM #1 Member Joined Mar 2009 From jharkhand Posts 77 Find the area of the shaded region... In the given fig., AB and AC are two equal chords of length 7cm and ∟BAC=60 degrees. Find the area of the shaded region A,C,B in clockwise directi...
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Patent US4471164 - Stream cipher operation using public key cryptosystem TECHNICAL FIELD This invention relates to the field of cryptography and, in particular, to public key cryptographic systems. BACKGROUND OF THE INVENTION In data transmission networks, it is often necessary to protect stored and transmitted data...
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ERNEST MOYER ERNEST MOYER'S RESEARCH The Great Pyramid Pi Chamber ...
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limits involving x-root functions November 9th 2009, 07:33 PM Landyach limits involving x-root functions Hey... This question is beyond me... find lim as x -> 0 f(x) = 1 / ((x+1)^(1/x)) - 1/x any help would be greatly appreciated. November 9th 2009, 08:01 PM Bacterius $f(x) = \frac{ 1}{(x+1...
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infinite product (sort of) Evaluate $\displaystyle \frac{2}{1} \div \Bigg(\frac{5}{4} \div \bigg( \frac{8}{7} \div \Big(\frac{11}{10} \div \ ... \Big)\bigg) \Bigg)$ Hint Spoiler: Use the infinite product expression for the sine function. You're making it too complicated. It's equivalent to $\displaystyle \frac{2}{1} ...
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Hottest &#39;mathematics-education&#39; Answers For vector spaces, $\dim (U + V) = \dim U + \dim V - \dim (U \cap V)$, so $$ \dim(U +V + W) = \dim U + \dim V + \dim W - \dim (U \cap V) - \dim (U \cap W) - \dim (V \cap W) + \dim(U \cap V \cap W), $$ right? Everyone knows that for any two square matrices $A$ and $B$ (wi...
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Inequality (Factorial Related) Prove : $(n!)^2 > n^n$ when n is a +ve integer > 2 Hi ! $n! = 1\times 2\times 3\cdots (n-1)\times n$ so \begin{aligned}(n!)^2 &= [1\times 2\times 3\cdots (n-1)\times n]^2\\<br /> &={\color{red}1}\times {\color{blue}1} \times {\color{green}2}\times {\ color{magenta}2} \cdots {\color{magen...
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Question on boundedness June 18th 2011, 10:50 AM #1 Member Joined Dec 2010 Posts 107 Question on boundedness Let $a\in\mathbb{R}$ and consider the set $S_a=\{a^n:n\in\mathbb{N},n>0\}$. Prove carefully that a is not bounded above when a>1. My first thoughts are to use a contradiction, by using the de...
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Vectors` October 28th 2006, 11:24 PM classicstrings Vectors` Ok .. here it is... The velocity of a train is reduced from 30m/s to 10m/s over a distance of 200m. Under this constant deceleration the train travels a further distance before coming to rest. What is this distance? October 29th 2006, 02:02 AM c...
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The norm of a vector Sci Advisor HW Helper PF Gold P: 3,171 Continuity and other limiting concepts in analysis can be defined in any metric space, which is simply a set ##S## along with a distance function ##d## satisfying the following conditions for all ## x,y \in S##: (1) ##d(x,y) \geq 0##, and ##d(x,y) = 0##...
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For what point along the shoreline should you aim? March 7th 2009, 09:44 PM #1 Junior Member Joined Mar 2009 Posts 42 For what point along the shoreline should you aim? You are in a row boat on Lake Erie, 2 miles from a straight shoreline, taking your potential in-laws for a boat ride. Six miles down the...
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Differential Equations... find the general sum April 4th 2007, 02:16 PM #1 Member Joined Jun 2006 Posts 93 Differential Equations... find the general sum dy/dt + 3y = t + e^(-2t) Find the general solution of the given differential equation and use it to determine how solutions behave at t --> inf ...
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solve using addition and multiplication principles June 8th 2008, 06:23 AM Mr.Huge solve using addition and multiplication principles Did I do this correct? Its been about 10 years since i been to school and am having some issues remembering how to do a lot of this stuff. -6r-6 is less than or = to -2(2r-4)...
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Math Help September 15th 2009, 01:32 PM #1 Newbie Joined Sep 2009 Posts 2 pmf help my problem is Let X be a random variable with pmf pk = c/k^2 for k = 1, 2, .... a.) estimate the value of c numerically. b) find P[X > 4] c) find P[6 <= X <= 8] i'm thinking that i need to do the summati...
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A few Short Calculus Practice Problems- HELP! December 11th 2008, 01:35 PM #1 Newbie Joined Nov 2008 Posts 21 A few Short Calculus Practice Problems- HELP! Can anyone please show me how to do these? I'm in short calculus (calc without trig). If $<br /> <br /> \int_1^4 f(x)dx = 6 <br />$ , what is th...
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Demand and total cost function November 19th 2008, 08:26 PM #1 Newbie Joined Nov 2008 Posts 3 Demand and total cost function I'm stuck on how to set this up, and help would be great. Demand function is Q = 16 - P Total cost function is defined as TC = 3 + Q + 0.25 Q^2. Use the two functions...
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Physics Forums - Simplex method - algebraic vs tabular form Quote: Quote by skaterboy1 (Post 3806596) Thank you very much for your help! IΔ«m now learning the big M method and learning about the radiation therapy problem where the ≀ isnΔ«t always that way but itΔ«s also β‰₯. See picture I was wondering if the big M m...
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RSA encryption April 9th 2006, 05:21 PM #1 Junior Member Joined Apr 2006 Posts 39 RSA encryption This problem is for my discrete math class - so I hope this is in the right section. This problem is to be done using only the computing power of a pocket calculator. Write out all your work in step-by-...
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differentation question December 2nd 2007, 06:49 AM #1 Member Joined Dec 2007 Posts 90 differentation question Hi everyone i was just wondering if anyone could help with this differentiation question it is : Use differentitation to find the coordinates of the stationary points on the curve. Y= x...
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EE2202 ELECTROMAGNETIC THEORY ANNA UNIVERSITY PREVIOUS YEAR QUESTION PAPER April/May 2010 ... EE2202 ELECTROMAGNETIC THEORY ANNA UNIVERSITY PREVIOUS YEAR QUESTION PAPER April/May 2010 ... Posted by R.Anirudhan B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2010 Third Semester Electrical and Electronics Engineering ...
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Combined First- and Second-Order Variational Model for Image Compressive Sensing Mathematical Problems in Engineering VolumeΒ 2013Β (2013), Article IDΒ 470165, 11 pages http://dx.doi.org/10.1155/2013/470165 Research Article Combined First- and Second-Order Variational Model for Image Compressive Sensing ^1School of Com...
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Synchronized Clocks in Frames boosted by Acceleration I have often thought about how the one-way speed of light can be measured without having to use synchronized clocks, which tends to be controversial because the clocks are normally synchronized by using one-way light in the first place. Recently, Don Lincoln of Ferm...
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Stabilization Strategies of Supply Networks with Stochastic Switched Topology Journal of Applied Mathematics VolumeΒ 2013Β (2013), Article IDΒ 605017, 7 pages http://dx.doi.org/10.1155/2013/605017 Research Article Stabilization Strategies of Supply Networks with Stochastic Switched Topology ^1State Key Laboratory of Ra...
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proof of -1 = +1 January 22nd 2009, 12:58 PM #1 Newbie Joined Jan 2009 From Southern California Posts 12 proof of -1 = +1 [I hope I did the LaTex correctly.] We know that $\textit{i}^2 = \sqrt{-1}^2$ and the square root and square operations are inverses so they cancel and $\textit{i}^2 = -1$ . ...
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Divisibility (gcd) 16 $a,b \in \mathbb{Z^+} , (a,b)=1 ,$ $n \in\mathbb{N} ,$ Show that: $(\frac{a^n-b^n}{a-b},a-b)=1$ or $n$ Take $a=5$ ; $b=2$ and $n=6$ It should be $\left(\frac{a^n-b^n}{a-b},a-b\right)|n$ Now, the proof I've found is nasty We have $<br /> \tfrac{{a^n - b^n }}<br /> {{a - b}} = a^{n - 1} + a^{n - 2}...
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Galois Group May 18th 2009, 10:03 PM #1 Galois Group I need to find the Galois Group of $(x^2-2)(x^2-3)(x^2-5)$ So to start since the splitting field is a degree 6 extention $[K:F]=6$ so the Galois Group should have 6 isomporphisms. The splitting field looks like $\mathbb{Q}(\sqrt{2},\sqrt{3},\sqrt{5})$...
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Derivative of matrix inverse March 7th 2010, 04:49 PM #1 Derivative of matrix inverse The matrix Sigma is positive definite and is decomposed as $\Sigma = AA^T$ Thus: $\Sigma^{-1} = A^{-T}A^{-1}$ and $A^{T}\Sigma^{-1} = A^{-1}$ What is $\frac{d A^{-1}}{d\Sigma}$ ? Follow Math Help Forum on Facebook...
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Proof by Mathematical induction! October 30th 2008, 09:33 AM #1 Newbie Joined Oct 2008 Posts 15 Proof by Mathematical induction! Hi there, I have this assignment, and I thought I was on the right path, but when I received it back with suggestions to fix it, I'm still not sure where to go from here. ...
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Converging integrals Show whether or not each of the following integrals converge: i) ii) $<br /> \int\limits_1^\infty {e^{ - \left( {3x^2 + 2} \right)} dx = e^{ - 2} } \int\limits_1^\infty {e^{ - 3x^2 } dx} <br /> <br />$ now it's easy to verify that: $<br /> e^{ - 3x^2 } \leqslant e^{ - 3x} \quad \forall 1 \leqslant...
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Complex Numbers: Cartesian to Polar September 8th 2009, 04:55 PM #1 Junior Member Joined Aug 2009 Posts 69 Complex Numbers: Cartesian to Polar Hi there, If I have a complex number z = 1 + root(3)i Then changing it to polar form is z = r cis(11pi/6) But my book does mention that the angle m...
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Examples of system of linear differential equations with periodic coefficients You mean something like [tex]sin(t)\frac{dx}{dt}+ (1- t^2)\frac{dy}{dt}= e^t[/tex] [tex]cos(t)\frac{dx}{dt}+ t\frac{dy}{dt}= t[/tex]? You will want to try to reduce this to a single equation in either x only or y only. Essentially, use "Gau...
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Patent US6266071 - Method of producing fluid-like animations using a rapid and stable solver for the Navier-Stokes equations BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to computer graphic animation, and more particularly to computer graphic simulation of fluid flow. ...
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The ItΓ΄ Integral with respect to an Infinite Dimensional LΓ©vy Process: A Series Approach International Journal of Stochastic Analysis VolumeΒ 2013Β (2013), Article IDΒ 703769, 14 pages http://dx.doi.org/10.1155/2013/703769 Research Article The ItΓ΄ Integral with respect to an Infinite Dimensional LΓ©vy Process: A Series A...
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Logarithmic problem help I have to solve x in terms of k $log x + log (x+9)=k$ Yes, Also Sprach Zarathustra understood that. Apply his hint. If "log(x)+ log(y)= log(xy)" is a general rule, then what is log(x)+ log(x+ 9)? Do you know how to solve log(y)= k for y? Do you know what the inverse function to log(x) is? I h...
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Help with related rates problem (calculus I) May 3rd 2009, 11:22 AM gtgamer140@yahoo.com Help with related rates problem (calculus I) Two boats are racing with constant speed toward a finish marker, boat A sailing from the south at 13mph and boat B approaching from the east. When equidistant from the marker the ...
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Solution for Ill-Posed Inverse Kinematics of Robot Arm by Network Inversion Journal of Robotics VolumeΒ 2010Β (2010), Article IDΒ 870923, 9 pages http://dx.doi.org/10.1155/2010/870923 Research Article Solution for Ill-Posed Inverse Kinematics of Robot Arm by Network Inversion Department of Electronics and Computer Syst...
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Patent US6160505 - Method and apparatus for converting an analog signal to a digital signal CROSS REFERENCES TO RELATED APPLICATIONS This application claims the benefit of U.S. provisional application No. 60/075,829 filed Feb. 24, 1998, entitled "The Chirp A/D Converter: A New Approach to Achieving High Quality Digita...
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Patent US7664191 - Method of symbol detection for MIMO dual-signaling uplink CDMA systems CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority under 35 U.S.C. Β§119 of Taiwanese Patent Application No. 094115211 dated May 11, 2005 the disclosure of which is hereby incorporated by reference. FIELD OF...
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Impossible equation to solve? Mentallic [tex]\int_0^{6}\sqrt{1 - (nx)^2}\dx \neq \left [{1 \over 2}\sqrt{1 - n^2x^2} + {\arcsin (nx) \over 2n} \right ]_{0}^{6}[/tex] Now, I can't actually explain because I don't know how to evaluate the integral, but I did go about it backwards and derived the result. They're not e...
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Help on Math & Merchandising November 6th 2007, 10:17 PM #1 Junior Member Joined Oct 2007 Posts 48 Hi All, Can you please help on these questions? I have solved them but just want to know if the answers r correct.. It's urgent .. Q1:A photo machine operator purchased 20 packets of papers. T...
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Solutions and Comments 37. Let ABC be a triangle with sides a, b, c, inradius r and circumradius R (using the conventional notation). Prove that ...
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Boltzmann distribution - Derive equation of state of a gas from Helmholtz free energy 1. The problem statement, all variables and given/known data Show that the equation of state of an ideal gas with N molecules in a container of volume V at temperature T is P=NkT. Use the result derived earlier. The result is A=-NkT...
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Patent US5133046 - Computer-based diagnostic expert system organized according to Bayesian theory FIELD OF THE INVENTION This invention relates to artificial intelligence (Al) and more particularly to a computer-based expert system that, in the event of a malfunction of a plant or a piece of equipment, provides the op...
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Series Solutions to Differential Equations Pre-requisites: 1. Ability to represent at least one function by a power series, such as 1/(1-x)=1+x+x^2+..., and the idea of an interval of convergence. 2. Knowing that e^x is the solution to d/...
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linear operator proof October 10th 2009, 11:37 AM #1 Newbie Joined Oct 2009 Posts 8 linear operator proof Let W be the space of all n X 1 column matrices over a field F. If A is an n X n matrix over F, then A defines a linear operator L on W through left multiplication: L(X) = AX. Prove that ever...
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plz help April 29th 2007, 11:40 AM JayJay1206 plz help Hi, May someone please help me. Thank you. In the figure, PE bisects angle DPF, AD is perpendicular to CG and ppoints B, P, and F are collinear. If slope angle BPC = 22, find slope angle DPE. http://aycu26.webshots.com/image/136...073639...
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Proof modolu In RSA: d_K (y)=y^d mod n and n=pq. Define d_p=d mod(p-1) d_q=d mod(q-1) Let M_p=q^(-1) mod p M_q=p^(-1) mod q And x_p=y^(d_p ) mod p x_q=y^(d_q ) mod q x=M_p qx_p+M_q px_q mod n Show that y^d=x mod n any help would be appraciated, thanks
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Nonlinear Programming Solve the nonlinear program subject to g(x) = 0 h(x) >= 0 lb <= x <= ub using a sequential quadratic programming method. The first argument is the initial guess for the vector x0. The second argument is a function handle pointing to the objective function phi...
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Transform a pde into rotating frame Hi, I have an equation of the form; [tex] \frac{d}{dt}(W) = \omega \left(x \frac{\partial}{\partial y} - y \frac{\partial}{\partial x} \right) W + g \frac{\partial}{\partial y} W + k x \frac{\partial^2}{\partial y^2} W [/tex] I want to change it into the rotating frame using the t...
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x intercepts February 24th 2009, 05:47 PM #1 Newbie Joined Feb 2009 Posts 1 1. a vegetable garden with an area of 200 square ft is to be fertiliezed. If the lenght of the garden is 1 foot less than three times the width, find the dimension of the garden? 2. Find the X-intercepts F(x)=X^2/18 +...
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Physics Forums - View Single Post - Particles and charge ~christina~ yes, I did mean that, but since I copied and pasted here and there I missed that. [tex]F= 6.67x10^{-11}N(m/kg)^2 \frac{(6.60 x10^ {-27}kg) (3.25x10^{-25}kg)} {(9.1x10^{-15})^2= 1.727x10^-33 N}[/tex] hm so you mean I take this number below and...
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Math Help October 5th 2008, 10:48 AM #1 Newbie Joined Oct 2008 Posts 3 cosets Let $G$ be a group and let $N$ be a subgroup of $G$. Using the definitions of the sets $gN$, $Ng$, and $gNg^{-1}$, prove that $Ng = gN$ for every $g$ in $G$ if and only if $G = N_G(N)$. $N_G(N)$ = { $g$ in $G$ | $gNg^{-1}...
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Mixed Finite Element Methods for the Poisson Equation Using Biorthogonal and Quasi-Biorthogonal Systems Advances in Numerical Analysis VolumeΒ 2013Β (2013), Article IDΒ 189045, 9 pages http://dx.doi.org/10.1155/2013/189045 Research Article Mixed Finite Element Methods for the Poisson Equation Using Biorthogonal and Quas...
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Patent US4740886 - Computer control system utilizing knowledge processing BACKGROUND OF THE INVENTION The present invention relates to computer control which utilizes a knowledge information processing technique in order to determine an optimal control strategy, and more particularly to a computer control system which...
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World Problem dealing with matrices November 16th 2008, 02:03 PM #1 Newbie Joined Oct 2008 Posts 23 Please help me to understand this problem, if I understand how to set it up I know I can solve it. . . Problem: Candidate A and candidate B are running for mayor of a small town. After attending a deba...
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Area of an inscribed Rectangle June 3rd 2008, 08:46 PM #1 Newbie Joined Jun 2008 Posts 2 A rectangle that is x feet wide is inscribed in a circle of radius 8 ft. a) Express th area of the rectangle as a function of x. b) find the domain of the function c) What dimmensions maximize the area of...
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Density Functions May 15th 2008, 04:54 AM #1 Density Functions A particle of mass $M$ has a random velocity, $V$, which is normally distributed with parameters $\mu = 0$ and $\sigma$. Find the density function of the kinetic energy. I've asked this before in a previous post, however, while not quite necessar...
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Speed, distance and time problem November 13th 2009, 06:20 AM #1 Junior Member Joined Aug 2009 Posts 62 Speed, distance and time problem Two workers X and Y staying at the same place are working in the same factory. X takes 20 mins while Y takes 30 mins to reach the factory by the same road. One day, Y s...
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Show sequence convergence October 25th 2009, 07:55 PM #1 Newbie Joined Oct 2009 Posts 5 Show sequence convergence 1. Let $(x_n)$ be a sequence with $x_1 = 1$ and $x_n = x_{n-1} - \frac{(-1)^n}{n}$. Prove convergence. I tried to prove this is cauchy, but couldn't make much progress. 2. Let $(s_n...
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[Haskell-cafe] Developing Programs and Proofs Spontaneously using GADT [Haskell-cafe] Developing Programs and Proofs Spontaneously using GADT Shin-Cheng Mu scm at iis.sinica.edu.tw Sat Aug 4 11:25:21 EDT 2007 I am curious about the possibility of developing Haskell programs spontaneously with proofs about their prop...
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Gauss Test for Convergence October 5th 2011, 05:45 PM #1 Junior Member Joined Sep 2011 Posts 70 Thanks 2 Gauss Test for Convergence I just got done proving Gauss' test, which is given in the book as: If there is an $N\ge 1$, an $s>1$, and an $M>0$ such that $\frac{a_{n+1}}{a_n}=1 - \frac{A}{...
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Math Help November 14th 2006, 04:27 PM #1 Newbie Joined Mar 2006 Posts 17 Related Rates So im having some problems figuring out where to start on these 2 related rates problems. 1. For a 5000 gallon tank of water which will drain completely in 40 minutes, the volume of water remaining in the tank a...
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Determining linear independence epenguin I don't think it's showing off but I took one look at that and thought hey second element minus first equals third, there is linear dependence without any if coming into it. IOW I think your conclusion is right. Exactly. Normally all of these linear independence problems can...
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factoring question January 30th 2013, 04:33 AM Lotrnerd factoring question Could someone help me with the following question? a^3 + a^2 - a - 1 I can't seem so get to the answer. Id love to know how you arrive to the answer too. Thanks January 30th 2013, 05:39 AM Shakarri Re: factoring questio...
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[SOLVED] Parametric Representation of a Curve May 20th 2009, 02:46 PM Solo [SOLVED] Parametric Representation of a Curve Hey, Find the equation in $x$ and $y$ for the curve given parametrically by $x = sec(t)$ and $y = tan(t)$, where $\frac{-\pi}{2} < t < \frac{\pi}{2}$. What type of curve is it? ...
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Complicated Maxwell Boltzman Distribution Integration TFM From this, I have since got: [tex] (\frac{2 \pi}{\pi ^{3/2}})(\frac{m^{3/2}}{m^2})(\frac{(2kT)^2}{(2kT)^{3/2}}) [/tex] Which I cancelled down to: [tex] (\frac{2 \pi}{\pi ^{3/2}})(\frac{1}{\sqrt{m}})(\sqrt{2kT}) [/tex] Does this look right? TFM Correct! ...
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determining formula for sequences. December 14th 2008, 07:18 AM #1 Newbie Joined Oct 2008 Posts 21 determining formula for sequences. Im kinda having trouble trying to determine the general forumla for these sequences. 5,4,9,13,22 and one for annual salary 42 000, 43 680, 45 427.20, 47 244...
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Physics Forums - View Single Post - Maximum Radial Velocity This problem is pretty complicated, and I have fooled around with it in Maple but I don't understand the concepts well enough to work it out yet. Suppose we have a simple hyperbolic orbit where there is a central mass M and a smaller mass m, and there is mor...
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Image of a fixed element under a random endomorphism in an Abelian group up vote 2 down vote favorite 1 Let $G$ be a finite Abelian group with endomorphism ring $End(G)$. I am interested in the probability $P(\phi(g_1) = g_2)$ for fixed $g_1,g_2 \in G$ and a uniformly chosen endomorphism $\phi(\cdot)$ from $End(G)$. E...
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Matrix rings acting on right R-modules - Dauns - Exercies 1-5 no 2 August 11th 2013, 02:01 AM #1 Matrix rings acting on right R-modules - Dauns - Exercies 1-5 no 2 In Exercise 2 of Exercises 1-5 of John Dauns' book "Modules and Rings" we are given $R = \begin{pmatrix} \mathbb{Z}_4 & \mathbb{Z}_4 \\ \mathbb{Z...
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Non-abelian Group of order 8 problem December 3rd 2010, 06:49 AM #1 Junior Member Joined Oct 2010 From Zulu-5 Posts 60 Non-abelian Group of order 8 problem Heres the problem: let $G$ be a non-abelian group of order 8 1. prove there exists an element of $G$, call it $a$ such that it's order ...
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Existence and Uniqueness Theorem September 3rd 2011, 09:34 AM #1 Existence and Uniqueness Theorem 1. Consider the differential equation $\frac{dy}{dx}=\sqrt{x-y};\ y(2)=2$. $f(x, y)=\sqrt{x-y}$ and $D_yf(x, y)=-\frac{1}{2\sqrt{x-y}}$ Neither $f(x, y)$ nor $D_yf(x, y)$ is continuous on some rectangle tha...
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compounded continuously question February 5th 2008, 02:34 PM killasnake compounded continuously question Hi I'm trying to solve this compounded continuously question. A bank pays interest at a rate of 10.6%, compounded continuously. How much should be invested so as to have 11 thousand dollars in 6 years? ...
4
[ 0.023681640625, 0.003936767578125, -0.0322265625, -0.00176239013671875, 0.004058837890625, -0.052734375, 0.01220703125, 0.0712890625, -0.011962890625, 0.08544921875, 0.003936767578125, -0.039794921875, -0.039794921875, 0.021484375, -0.001312255859375, 0.002197265625, -0.12255859375, ...
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Help with Complex Numbers December 5th 2012, 12:16 PM INeedOfHelp Help with Complex Numbers 1.Find the product of Attachment 26086 and Attachment 26087 Attachment 26089 Attachment 26090 Attachment 26091 Are those steps right so far? If so, how do I solve the rest? 2.If Attachment 26095 and ...
5
[ -0.068359375, 0.02392578125, 0.04931640625, 0.0302734375, 0.0036163330078125, -0.0284423828125, 0.0262451171875, 0.1005859375, -0.017822265625, 0.043212890625, 0.103515625, -0.0216064453125, 0.0128173828125, 0.11669921875, -0.01312255859375, -0.0081787109375, -0.06298828125, -0.026...
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Get homework help at HomeworkMarket.com Question Submitted by barzki on Wed, 2013-05-22 22:23 due on Sun, 2013-05-26 22:17 answered 2 time(s) barzki is willing to pay $15.00 Finance 1.Β  Assume Mr. Davis can buy either a $10,000 corporate bond yielding 10% or a municipal bond yielding 7%. Assume risk is constant...
5
[ -0.03271484375, 0.04296875, -0.0162353515625, -0.044677734375, -0.032958984375, 0.0169677734375, 0.04248046875, 0.06884765625, -0.09228515625, 0.09423828125, 0.041015625, -0.054931640625, -0.0400390625, 0.0693359375, -0.0101318359375, 0.06005859375, -0.04150390625, -0.025146484375,...
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