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Probability of wining a series September 28th 2008, 06:38 PM #1 Probability of wining a series A and B play a series of game, the probability of A wining is $p$ and the probability of B wining is $1-p$. The winner of the series is the player that wins 2 more games. A) Find the probability that A is the final...
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On a Maximal Number of Period Annuli Abstract and Applied Analysis VolumeΒ 2011Β (2011), Article IDΒ 393875, 8 pages http://dx.doi.org/10.1155/2011/393875 Research Article On a Maximal Number of Period Annuli ^1Information Systems and Management Institute, Ludzas Street 91, 1019 Riga, Latvia ^2Institute of Mathemati...
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Assistance with trigonometric inequality needed please February 16th 2011, 10:01 AM #1 Newbie Joined Feb 2009 Posts 11 Assistance with trigonometric inequality needed please Hey everyone, I'm doing some inequalities and I'm stuck with some trigonometric ones as I've never really encountered them before, ...
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limits in the complex domain Show that $<br /> \lim_{n \to \infty}(i)^\frac{1}{n}=1<br />$ where $(i)^\frac{1}{n}$ is the principal value of the nth root of $i$. I am not sure what you mean by $i^{1/n}$. But given the equation, $x^n=i=\cos \pi/2 +i\sin \pi/2$ Then, (by de Moiver's theorem) $x=\cos \left( \frac{\pi}{2n...
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Dice throwing problem March 3rd 2010, 07:35 AM #1 Dice throwing problem The problem is following: A and B takes turns throwing a dice. A begins. Who throws six first wins. What's the probability that A wins? I tried to examine probabilities that A wins on different rounds. Something like this: 1. $<b...
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quadratic equation problem May 1st 2010, 02:30 AM #1 Member Joined Oct 2009 Posts 202 quadratic equation problem Given that one of the root of the quadratic equation 2x(4x-9)=4-3p is half the other root.find: a)value of p b) root of the quadratic equation.. anyone sir...please help! ...
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Linear Algebra help July 13th 2008, 10:08 AM #1 Junior Member Joined Apr 2008 From Gainesville Posts 68 Linear Algebra help Let V and W be vectors spaces, and let S be subset of V. Define S^0 = { T \in \L(v,w) : T(x) =0 for all x \in \ S. Prove the following statements a) S^0 is a subspace o...
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Linear algebra toughy May 4th 2008, 12:28 PM mathisthebestpuzzle Linear algebra toughy Suppose that n is a positive integer. Define T \ $in L(F^n)$ by: T( $z_1$, ....., $z_n$)=(0, $z_1$,...., $z_n-1$). Find a formula for T*( $z_1$, ....., $z_n$). T*is the adjoint of T. May 4th 2008, 09:34 PM Cap...
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Math Help November 17th 2010, 07:39 AM #1 Super Member Joined Aug 2009 Posts 639 continuous how do you prove that the unction f(x) = tan(x+x^2)/(1+x+x^2) is continuous for all x=[0,1] except at one point. i found out that it is not cont at x= 0.84936..but i dont know how to prove that it is continu...
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prove by induction October 23rd 2011, 05:39 AM #1 prove by induction Let G be a group, and $a,b\in{G}$. For any positive integer $n$ we define $a^n$ by $a^n=\underbrace{aaa...a}_{\text{n factors}}$ . Now prove by induction: If $ab=ba$, then $(ab)^n=a^nb^n$ *edit: Please, no spoilers. Just...
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Polynomials which factors but have no roots? May 28th 2010, 04:53 AM 1337h4x Polynomials which factors but have no roots? Hello all, Can anyone think of an example of a polynomial f(g) with integer coefficients which factors (poly mod n) but has no roots, e.g. for which there are no such integers g where f(...
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Inverse Trig Function Integrals I did this exercises, but I have a doubt in the process, thanks for your help. The integral, $\int \frac{1}{x\sqrt{x^2-4}}dx$ Is almost the inverse cosecant integral. There are some adjustments. First, $x^2-4=x^2-2^2$ Thus, it has form, $\csc^{-1} (x/2)$ But note the following, that if ...
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Location Optimization of Multidistribution Centers Based on Low-Carbon Constraints Discrete Dynamics in Nature and Society Volume 2013 (2013), Article ID 427691, 6 pages http://dx.doi.org/10.1155/2013/427691 Research Article Location Optimization of Multidistribution Centers Based on Low-Carbon Constraints ^1School ...
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Writing as a function of only cosine without any powers of cosine December 9th 2012, 09:42 PM #1 Newbie Joined Dec 2012 From USA Posts 2 Writing as a function of only cosine without any powers of cosine Hi, can anybody help me on this problem? Thanks in advance ^^ Write Cos^3(2θ) * Sine^2(2θ) as...
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Set theory, transitive sets February 22nd 2009, 05:41 AM #1 Junior Member Joined Jun 2008 Posts 56 Set theory, transitive sets Could someone please prove, using the principle of mathematical induction, that the set $\omega$ consisting of all natural numbers is a transitive set? That is, prove that: ...
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Statistical Analysis and Calculation Model of Flexibility Coefficient of Low- and Medium-Sized Arch Dam Mathematical Problems in Engineering Volume 2012 (2012), Article ID 860760, 20 pages http://dx.doi.org/10.1155/2012/860760 Research Article Statistical Analysis and Calculation Model of Flexibility Coefficient of L...
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Homework Help Posted by Katy on Tuesday, March 29, 2011 at 10:48pm. An Equilateral triangle (ABC) is inscribed inside a circle. The side lengths of the triangle are 8 cm. What is the radius of the circle? • geometry - MathMate, Wednesday, March 30, 2011 at 9:14am Let the triangle be named ABC. Name the cen...
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Kraitchik method 1. November 23rd 2009, 06:10 AM #1 2. November 23rd 2009, 07:06 AM #2 First, $143^2=20,449$, so: $u_1=143^2-20,437=12=2^2\cdot 3$ $u_2=144^2-20,437=299$ $u_3=145^2-20,437=588=2^2\cdot 3\cdot 7^2$ We see that $u_1\cdot u_3=2^4\cdot 3^2\cdot 7^2$ , a squ...
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Distribution Maximum Hello, Harry! Just take the derivative, equate to zero, and solve . . . Assuming x > 0, we have: .f(x) .= .2ax·e^{-ax²} Differentiate and equate to zero: . . f'(x) .= .2ax·e^{-2ax²}(-2ax) + 2ae^ {-ax²} .= .0 Divide by 2ae^{-ax²}: .-2ax² + 1 .= .0 And we have: .2ax² .= .1 . . → . . x² = 1/2a . . . ....
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the encyclopedic entry of lagrange's method Lagrange's theorem, in the mathematics of group theory, states that for any finite group G, the order (number of elements) of every subgroup H of G divides the order of G. Lagrange's theorem is named after Joseph Lagrange. Proof of Lagrange's Theorem This can be shown using...
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Proving Identities April 18th 2005, 12:26 PM #1 Newbie Joined Apr 2005 Posts 23 Proving Identities I am having problems with proving identities. Could someone please help me? 1. tanx + cot x = secxcscx 2. sec^2x = ___cscx____ cscx - sinx 3. _tan^2t__ = sect - cost sect We firs...
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Numerical Study of Flutter of a Two-Dimensional Aeroelastic System ISRN Mechanical Engineering Volume 2013 (2013), Article ID 127123, 4 pages http://dx.doi.org/10.1155/2013/127123 Research Article Numerical Study of Flutter of a Two-Dimensional Aeroelastic System Department of Mechanical Engineering, Atma Jaya Catho...
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Induction August 25th 2010, 03:30 PM Apprentice123 Induction How can I prove by induction that: $n^2 > 3n$ for all n>=4 I do: n=k P(k) = k^2 > 3k P(k+1) = (k+1)^2 > 3(k+1) How to solve P(k) --> P(k+1) to prove that P(n) is truth ??? August 25th 2010, 03:38 PM Defunkt $(k+1)^...
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Perfect squares of n and n+99 July 7th 2010, 09:47 AM Mukilab Perfect squares of n and n+99 How many positive integer solutions are there n such that both n and n+99 are perfect squares? I believe there is only 1 solution. Any tips on how to tackle this? I haven't really come up with a method or a form...
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savings, interest, inflation etc... June 18th 2009, 08:35 PM Lobotomy savings, interest, inflation etc... Hi this is the parameters i want to use: Initial investment (a) deposit per f1 (d) for example 1000 per month frequency of deposit per year (f1), f1=12 if it is per month frequency ...
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Basis matroids Basis matroids In a matroid, a basis is an inclusionwise maximal independent set. The common cardinality of all bases is the rank of the matroid. Matroids are uniquely determined by their set of bases. This module defines the class BasisMatroid, which internally represents a matroid as a set of bases....
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Sequence of measurable functions. October 3rd 2010, 10:43 AM #1 Junior Member Joined Aug 2010 Posts 37 Sequence of measurable functions. In a book that I am reading, they give the following proposition: Let (X, A) be a measure space, and let B inside X that belongs to A. Let f be a [0, infinity]-val...
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Confusing Integral! February 5th 2011, 03:08 PM Vamz Confusing Integral! $\displaystyle \int \sqrt{4 x - x^2} \, dx$ I really don't know how to evaluate this! I cant get it into the form of any of the inverse trig functions. Im trying to learn the trig substitution method. Could this work on this? Would the...
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Integration trig help How do i integrate SinxCosX by parts? I am stuck Last edited by Benja303; April 18th 2013 at 02:11 PM. -1/2 cos^2(x)? BTW how do i know when to use parts or not? Plato is right that using Integration by Parts here is overkill, but if you MUST use it... \displaystyle \begin{align*} I &= \int{\si...
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Derivatives - Falling Objects October 8th 2007, 10:13 AM #1 Junior Member Joined Oct 2007 Posts 69 Derivatives - Falling Objects I have to answer a problem using the following function: -16t^2 + Vot + So (Sorry the notation is bad, but the middle term is initial velocity and So is distance) ...
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Complex equation October 1st 2008, 01:09 AM #1 Newbie Joined Aug 2006 Posts 24 Complex equation Hi I have this equation $(e^{\pi\cdot z})^{2}=i$ Where I have to find the roots, when modulus er less than 1. Cannot really solve it... I have tried to $t=e^{\pi\cdot z}$ And then trie...
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Heat Generation and Thermal Radiation Effects over a Stretching Sheet in a Micropolar Fluid ISRN Thermodynamics Volume 2012 (2012), Article ID 795814, 6 pages http://dx.doi.org/10.5402/2012/795814 Research Article Heat Generation and Thermal Radiation Effects over a Stretching Sheet in a Micropolar Fluid Department ...
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Homework Help Posted by Sawa on Saturday, May 8, 2010 at 5:42pm. If $3,000.00 is deposited into an account paying 3% interest compounded annually (at the end of each year), how much money is in the account after 4 years? (Round to the nearest cent.) • math - MathMate, Saturday, May 8, 2010 at 7:43pm The compou...
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Numerical solution to hyperbolic PDE - grid leapfrog. November 24th 2011, 10:45 AM #1 Newbie Joined Nov 2011 Posts 10 Numerical solution to hyperbolic PDE - grid leapfrog. Hi! I'm working on solving partial differential equations numerically (writing codes). And its literally killing my soul. I...
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Elastoplastical Analysis of the Interface between Clay and Concrete Incorporating the Effect of the Normal Stress History Journal of Applied Mathematics Volume 2013 (2013), Article ID 673057, 12 pages http://dx.doi.org/10.1155/2013/673057 Research Article Elastoplastical Analysis of the Interface between Clay and Con...
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Greatest Common Divisor Problen: If gcd(a, b) = 1, solve gcd(a^2 + b^2, a + b) June 9th 2011, 02:08 PM VinceW Greatest Common Divisor Problen: If gcd(a, b) = 1, solve gcd(a^2 + b^2, a + b) How do I solve the problem in the subject line? The back of the book lists an answer "1 or 2", but I'd like to see the steps...
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Bhaskara equation help March 9th 2011, 07:52 AM #1 Newbie Joined Feb 2011 Posts 8 Bhaskara equation help Hello, I'm having problems to solve this equation: $6x^2-5x^-^1+1=0$ I really don't know how to do. I don't know if it will be $5.\frac{1}{x}$ or $\frac{1}{5x}$ and how do I get a b and...
4
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[SOLVED] Calculate a volume + theoretical question July 11th 2009, 03:51 PM #1 [SOLVED] Calculate a volume + theoretical question 1)Identify the region of integration and calculate the following integral using spherical coordinates : $\int_{-3}^{3} \int_{-\sqrt{9-x^2}}^{\sqrt{9-x^2}} \int _0^{\sqrt{9-x^2-y^2}} z\...
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Institute for Mathematics and its Applications (IMA) We describe a collection of techniques which allow for the fast and accurate solution of boundary integral equations on two-dimensional domains whose boundaries have corner points. Our approach has two key advantages over existing and recently suggested schemes: (1) ...
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Homework Help Posted by Allison on Thursday, September 22, 2011 at 6:31pm. 9/10th (3+8x)+3greater or equal to 15 what is the solution to this? • Matth 116 - Henry, Saturday, September 24, 2011 at 5:27pm 9/10(3x+8) + 3 >= 15, 27x/10 + 72/10 +3 >= 15, Multiply both sides by 10: 27x + 72 + 30 >= 150, ...
4
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2sin^2(x)-sin(x)=3 February 20th 2008, 02:47 AM #9 Junior Member February 18th 2008, 06:08 PM #8 February 18th 2008, 05:50 PM #7 February 18th 2008, 05:46 PM #6 February 18th 2008, 05:34 PM #5 Newbie February 18th 2008, 05:32 PM #4 February 18th 2008, 05:26 PM #3 Newbie February 18th 2008, 05:19 PM #2 February 18...
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Confused on Algebra 2 counting principles story problem January 3rd 2008, 11:30 AM #1 I have been having many difficulties on trying to figure out what this story problem is asking if you can please help. This is it: A Person is wearing a bracelet with 12 settings around the bracelet. How many different ...
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How do I make R2 the subject of this formula? March 22nd 2011, 10:19 AM becca How do I make R2 the subject of this formula? Hi, How would I go about making R2 the subject of the formula on the following Wiki page, it's the one under Applications - Voltage Source (Vout = ...)? I don't know how to include the...
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Homework Help Posted by Tiffany Enlow on Friday, April 10, 2009 at 3:20pm. 4. Find the exact value for sin(x+y) if sinx=-4/5 and cos y = 15/17. Angles x and y are in the fourth quadrant. 5. Find the exact value for cos 165degrees using the half-angle identity. 1. Solve: 2 cos^2x - 3 cosx + 1 = 0 for 0 less than or e...
4
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Pre-Algebra Placement Test problem November 5th 2010, 11:54 AM #1 Newbie Joined Nov 2010 Posts 18 Pre-Algebra Placement Test problem I'm preparing for college and I got stuck on one of the problems of Pre-Algebra Placement Test.. So can someone please help me find the solution to it. A total of 50 j...
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Problem breakdown (interest) February 6th 2010, 12:01 PM #1 Newbie Joined Oct 2009 Posts 24 Problem breakdown (interest) There are a lot of stuff in this question... and I can't wrap my brain around it all. How do I break it down? The question: Suppose you borrow P dollars at a monthly interest...
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Proving a statement by Induction April 19th 2011, 10:08 PM Oiler Proving a statement by Induction Hey all, I have the following statement: 5|7^k-2^k for all k in N I want to prove it by induction, so I proceed as follows.. Basis step: let p(k) be the statement that 7^k-2^k = 5m for m in N and k...
4
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Solving differential equation from variational principle March 26th 2013, 09:29 AM #1 Junior Member Joined Jun 2010 Posts 46 Solving differential equation from variational principle I have the following differential equation which I obtained from Euler-Lagrange variational principle $\frac{\parti...
4
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Number of possible triangle. November 29th 2011, 08:19 AM livinggourmand Number of possible triangle. Q)triangle has n dots on each side. (as shown in fig) How many triangles can be formed (any size). 1st image (image002.jpg) http://postimage.org/image/e1l6d685r/ My incomplete solution :( Ans...
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Coupled Coincidence Point and Coupled Fixed Point Theorems via Generalized Meir-Keeler Type Contractions Abstract and Applied Analysis Volume 2012 (2012), Article ID 781563, 22 pages http://dx.doi.org/10.1155/2012/781563 Research Article Coupled Coincidence Point and Coupled Fixed Point Theorems via Generalized Meir-...
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Math Help August 17th 2010, 11:08 AM #1 Newbie Joined Aug 2010 Posts 14 percents soybean is 16% protien . corn is 8% protien. how many pounds of each should be mixed together in order to get 320 lb mixture that is 12% protien. how many pounds of soybean how many pounds of corn Hi maf...
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Two-Stage Detectors with Multiple Energy Detectors and Adaptive Double Threshold in Cognitive Radio Networks International Journal of Distributed Sensor Networks Volume 2013 (2013), Article ID 656495, 8 pages http://dx.doi.org/10.1155/2013/656495 Research Article Two-Stage Detectors with Multiple Energy Detectors and...
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C3 Trigonometry Question February 27th 2013, 10:33 AM #1 Newbie Joined Feb 2013 From England Posts 11 C3 Trigonometry Question Here is a question, I've got an answer to it but I think its wrong a) prove that (done) $\frac{1-cos2\Theta }{sin2\Theta }\equiv tan\Theta$ b) verify that ...
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A rather basic log question I believe July 15th 2010, 10:52 AM #1 Newbie Joined Jul 2010 Posts 8 A rather basic log question I believe "Solve for x:" 2 X 3^2x+3 = 3 X 2^3x+4 (X is multiply) feel silly for posting this, is a simple log question i think, but its got me stumped. thanks ...
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Separation Axioms in Intuitionistic Fuzzy Topological Spaces Advances in Fuzzy Systems Volume 2012 (2012), Article ID 604396, 7 pages http://dx.doi.org/10.1155/2012/604396 Research Article Separation Axioms in Intuitionistic Fuzzy Topological Spaces ^1Electronics and Communication Sciences Unit, Indian Statistical I...
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Partial Resolution of Complex Cones over Fano Advances in High Energy Physics Volume 2013 (2013), Article ID 295842, 10 pages http://dx.doi.org/10.1155/2013/295842 Research Article Partial Resolution of Complex Cones over Fano Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India Receiv...
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Maximum Likelihood Estimation - Examples EXPONENTIAL DISTRIBUTION Let X 1 , X 2 ,..., X n X 1 , X 2 ,..., X n be a random sample from the exponential distribution with p.d.f. f( x;θ )= 1 θ e −x/θ ,0<x<∞ f( x;θ )= 1 θ e −x/θ ,0<x<∞ , θ θ belongs to Ω=( θ;0<θ<∞ ). Ω=( θ;0<θ<∞ ). The likelihood function is given by L(...
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Math 2 questions Posted by Anonymous on Wednesday, May 22, 2013 at 9:21pm. I need help with 2 questions so that I could do my other ones myself so can someone please do these 2 questions so i get an example how to do them, thanks. 1. Lauren works for a bookstore. One of the stores suppliers has a promotion in which a...
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Trigonomic function question July 19th 2007, 05:32 AM #1 Newbie Joined Jun 2007 Posts 6 Trigonomic function question Hey, I have been working a bit with the trig functions and came across this problem: B = (A + sin(theta) )/ (sin(theta)*cos(theta)) when you separate the above fraction into the ...
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Volume of a solid May 15th 2011, 08:55 PM jackie Volume of a solid My friend and I ran into another problem that we were not able to solve. If anyone can gives us a hint, we'd really appreciate it. A solid is generated by rotating the curve $y=f(x)$ where $0\leqslant x \leqslant c$ about the x-axis, and the...
5
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word problem September 28th 2008, 09:40 PM #1 Newbie Joined Jul 2008 From qc Posts 11 word problem Lornz can finish checking a set of papers in 2/3 hours as Butch can and Butch can do it in 3/4 as many hours as Fe. working together, they can do it in 36/13 hours. In how many hours can each of the...
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the encyclopedic entry of recursive functions The primitive recursive functions are defined using primitive recursion and composition as central operations and are a strict subset of the recursive functions (recursive functions are also known as computable functions ). The term was coined by Rózsa Péter ....
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Adaptive Neural Sliding Mode Control of Active Power Filter Journal of Applied Mathematics Volume 2013 (2013), Article ID 341831, 8 pages http://dx.doi.org/10.1155/2013/341831 Research Article Adaptive Neural Sliding Mode Control of Active Power Filter Jiangsu Key Laboratory of Power Transmission and Distribution Eq...
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Multiresolution Analysis for Stochastic Finite Element Problems with Wavelet-Based Karhunen-Loève Expansion Mathematical Problems in Engineering Volume 2012 (2012), Article ID 215109, 15 pages http://dx.doi.org/10.1155/2012/215109 Research Article Multiresolution Analysis for Stochastic Finite Element Problems with W...
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the encyclopedic entry of natural-number In mathematics , a natural number (also called counting number ) can mean either an element of the set {1, 2, 3, ...} (the positive integers ) or an element of the set {0, 1, 2, 3, ...} (the non-negative integers). The former is generally used in number theory , wh...
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Limit with cubic factor Find $\lim_{x\to0}\frac{(2+x)^{\frac13}-2^{\frac13}}{x}$ I suspect somehow i need to utlise $a^3-b^3=(a-b)(a^2+ab+b^2)$ although i am not sure how to do it thanks $lim_{x\to 0}\frac{{(2+x)^{\frac{1}{3}}}-2^{\frac{1}{3}}}{(2+x)-2}$ which is one of generalised form $lim_{x\to 0}\frac{x^n-a^n}{x-a...
5
[ 0.018798828125, -0.043212890625, -0.103515625, 0.0103759765625, -0.033935546875, -0.0196533203125, -0.0260009765625, -0.04150390625, 0.0159912109375, 0.0166015625, 0.103515625, -0.0654296875, 0.013916015625, 0.0203857421875, 0.0274658203125, -0.01239013671875, 0.015869140625, -0.03...
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Solving Equations With Variables on Both Sides October 23rd 2006, 04:35 PM hectorjimenezjr@yahoo.com Solving Equations With Variables on Both Sides Hi, Name is Hector. Working with my son trying to help w/ equations with variables on both sides. To be honest, I have NO IDEA how to proceed. Can someone ...
4
[ -0.0166015625, -0.03076171875, 0.0252685546875, 0.0257568359375, -0.011962890625, 0.052734375, -0.006378173828125, -0.031005859375, -0.07568359375, -0.00102996826171875, 0.031005859375, -0.0286865234375, 0.0673828125, -0.01318359375, -0.01007080078125, 0.032470703125, -0.06591796875,...
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Fermat's Little Theorem May 30th 2009, 03:36 AM #1 I want to use Fermat's Little Theorem to deduce that $13^{16n+2} + 1$ is divisible by 7, where n is a positive integer. Does this have anything to do with modular arithmetic? D: If so, would I set it up like $13^{16n+2} \equiv 1 (mod 7)$ He...
5
[ -0.05029296875, 0.087890625, 0.015625, 0.0673828125, 0.08203125, 0.0277099609375, 0.031982421875, 0.0673828125, -0.0208740234375, -0.0625, 0.0322265625, 0.00592041015625, -0.0111083984375, 0.06640625, -0.0791015625, -0.07861328125, -0.06396484375, 0.0400390625, -0.03466796875, ...
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Dungeons and Dragons June 13th 2011, 01:12 PM #1 Newbie Joined Feb 2010 Posts 7 Dungeons and Dragons To generate your stats you roll four six-sided dice, drop the lowest and add the other 3. What is the average score you would get with this process, please? and why... Thanks, Morlaf Re: Dungeon...
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[ 0.057861328125, 0.0283203125, -0.01409912109375, -0.0869140625, -0.03955078125, -0.000675201416015625, 0.05224609375, 0.00162506103515625, -0.02294921875, 0.0230712890625, -0.08740234375, -0.002471923828125, 0.028564453125, -0.054443359375, -0.04638671875, 0.03369140625, -0.018188476...
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the encyclopedic entry of magnetic potential The magnetic potential provides a mathematical way to define a magnetic field in classical electromagnetism . It is analogous to the electric potential which defines the electric field in electrostatics . Like the electric potential, it is not directly observable...
4
[ -0.0625, -0.05224609375, -0.044189453125, -0.0286865234375, 0.0296630859375, 0.055419921875, -0.064453125, 0.026123046875, 0.0213623046875, -0.029052734375, -0.08837890625, 0.041015625, 0.042236328125, 0.052734375, 0.03564453125, -0.0703125, -0.041259765625, -0.0185546875, 0.0722...
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Find all functions u_0(x)... January 10th 2011, 05:02 PM #1 MHF Contributor Joined Mar 2010 From Florida Posts 3,093 Thanks 5 Find all functions u_0(x)... Find all functions $u_0(x)$ for which the problem $u_x-2u=0$ $u(x,0)=u_0(x)$ $\displaystyle\int\frac{u_x}{u}dx=\int 2dx\Rightar...
5
[ -0.01434326171875, -0.0498046875, 0.056884765625, 0.011962890625, 0.0308837890625, 0.042724609375, 0.0029296875, -0.0263671875, -0.0693359375, 0.004974365234375, 0.142578125, -0.048828125, -0.10595703125, -0.0078125, 0.01611328125, 0.012451171875, -0.05224609375, -0.08544921875, ...
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U-sub definite integral May 4th 2009, 11:14 PM #1 Newbie Joined May 2009 Posts 1 U-sub definite integral The integral on 0 to 8 of g(u)du = 15 What is the integral on 0 to 64 of g(t/8)? What is the integral on 0 to 8 of g(8-t)? $\int_{0}^{64}g\left(\frac{t}{8} \right)dt$ let $u=\frac{...
4
[ -0.062255859375, 0.06787109375, 0.0732421875, -0.0296630859375, -0.042724609375, 0.0015106201171875, -0.0035400390625, 0.03662109375, -0.06591796875, 0.01422119140625, 0.03662109375, 0.0002536773681640625, -0.042724609375, 0.00543212890625, -0.072265625, 0.00970458984375, 0.015380859...
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2^n is incongruent to 1 (mod n) Question Show that 2^n is incongruent to 1 (mod n) for all n>1. Thank you very much. First you can prime decompose $n$ for it is larger than 1. Then by relative primeness the congruences simplifies. In that case, the problem simplifies to showing, $2^not \equiv 1 (\mbox{ mod } n)$ Where...
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[ 0.035400390625, -0.0032958984375, 0.05517578125, 0.03955078125, 0.0859375, -0.044189453125, -0.029296875, 0.08544921875, -0.00860595703125, 0.016357421875, -0.01531982421875, -0.020751953125, 0.0284423828125, -0.0234375, 0.0003833770751953125, 0.0306396484375, -0.0546875, -0.009948...
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Set Theory problem February 24th 2008, 02:35 PM Foink Set Theory problem Hey, can anyone please help me with this problem: For all sets A, B, C, prove If $A-C = \emptyset$ then $(A \cup B) - (B \cap C) = (A-B) \cup (B-C)$ This is what I have done so far, but I seem to be stuck: $(A \cup B) - (...
4
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Prediction interval for normal distribution May 3rd 2010, 07:15 PM gralla55 Prediction interval for normal distribution My textbook only has formulas for prediction intervals of t-distributed variables. If I have a binomial distribution, with an estimated p, how can I create a prediction interval that with 95% ...
5
[ 0.006805419921875, 0.041259765625, 0.037109375, 0.04541015625, 0.0023040771484375, -0.0194091796875, -0.025146484375, 0.1201171875, 0.0118408203125, -0.0017547607421875, -0.00014019012451171875, -0.056640625, 0.046875, -0.07275390625, -0.031494140625, -0.0269775390625, -0.00231933593...
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Tangent bifurcations The left intersection of the green line and parabola is an attracting fixed point because the absolute value of the f(x) slope at the point is smaller than one. The slope at the right intersection is greater than one and it is a repeller. Click the "Demo" button to see how these points meet togeth...
4
[ -0.05908203125, -0.07666015625, -0.030029296875, 0.0308837890625, -0.03857421875, 0.004547119140625, 0.040283203125, 0.08154296875, 0.06982421875, -0.037109375, 0.03759765625, -0.00982666015625, 0.039794921875, -0.0771484375, -0.007781982421875, 0.05517578125, -0.099609375, -0.1166...
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the encyclopedic entry of Brauer_group In mathematics , the Brauer group arose out of an attempt to classify division algebras over a given field K . It is an abelian group with elements isomorphism classes of division algebras over K , such that the center is exactly K . The group is named for the al...
4
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[SOLVED] Vectors May 25th 2008, 02:34 PM #1 Junior Member Joined Mar 2008 Posts 67 Using components show that vector u cross vector v = the 0 vector if u and v are collinear. What does the fact that u and v are colinear tell us? if two vectors are colinear then the vectors are scalar multiples o...
4
[ -0.0198974609375, 0.0098876953125, -0.01409912109375, -0.01806640625, 0.0244140625, 0.06005859375, 0.0027313232421875, -0.06787109375, 0.00860595703125, 0.027099609375, 0.043701171875, -0.07861328125, 0.031005859375, 0.0908203125, -0.0537109375, -0.0306396484375, -0.03515625, 0.002...
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practical differential problem March 7th 2009, 09:35 PM #1 Junior Member Joined Oct 2008 Posts 29 practical differential problem having some trouble with this, but I dont know what else goes in the equation besides $XY=-12$, can someone help? "Find two numbers whose product is -12 and the sum of who...
5
[ -0.041015625, 0.06494140625, -0.0167236328125, -0.0024871826171875, -0.061767578125, 0.0126953125, 0.0264892578125, 0.06689453125, -0.017822265625, -0.032470703125, 0.0634765625, 0.08642578125, 0.06787109375, 0.06396484375, -0.0703125, -0.00714111328125, 0.0186767578125, 0.04101562...
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Queueing System with Heterogeneous Servers Including One with Working Vacation International Journal of Stochastic Analysis Volume 2012 (2012), Article ID 145867, 16 pages http://dx.doi.org/10.1155/2012/145867 Research Article An M/M/2 Queueing System with Heterogeneous Servers Including One with Working Vacation ^...
4
[ -0.04248046875, 0.000629425048828125, 0.01220703125, 0.032470703125, -0.028076171875, -0.07373046875, 0.025634765625, -0.08251953125, 0.053466796875, 0.010498046875, 0.038330078125, 0.054443359375, 0.0179443359375, 0.006103515625, 0.07568359375, -0.076171875, 0.0712890625, -0.09082...
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Advanced Math Word Problem November 12th 2011, 07:18 AM #1 Newbie Joined Nov 2011 Posts 3 Advanced Math Word Problem I've never had so much difficulty with a word problem, if someone could help I'd appreciate it. The word problem is below: Uploaded with ImageShack.us In the...
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[ -0.006744384765625, 0.07958984375, 0.025146484375, -0.033447265625, -0.0166015625, -0.0201416015625, -0.029052734375, -0.0012969970703125, -0.08203125, -0.0189208984375, 0.0198974609375, -0.056396484375, 0.044189453125, -0.0028533935546875, 0.01092529296875, 0.048095703125, 0.0028381...
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the encyclopedic entry of Splay trees A splay tree is a self-balancing binary search tree with the additional property that recently accessed elements are quick to access again. It performs basic operations such as insertion, look-up and removal in O (log(n)) amortized time. For many non-uniform sequences of op...
4
[ -0.004974365234375, 0.057861328125, -0.047119140625, -0.0262451171875, 0.00799560546875, -0.1279296875, -0.037109375, -0.03759765625, -0.004730224609375, -0.0673828125, 0.0289306640625, 0.12890625, 0.04443359375, -0.037109375, -0.0186767578125, 0.016357421875, -0.05712890625, 0.075...
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kpath.census {sna} Compute Path or Cycle Census Information Description kpath.census and kcycle.census compute k-path or k-cycle census statistics (respectively) on one or more input graphs. In addition to aggregate counts of paths or cycles, results may be disaggregated by vertex and co-membership information may b...
4
[ 0.02490234375, -0.037353515625, -0.03955078125, -0.00885009765625, -0.09228515625, 0.033203125, -0.0296630859375, -0.011474609375, -0.07861328125, 0.0159912109375, 0.015869140625, -0.10546875, 0.08349609375, -0.042724609375, -0.0361328125, -0.017822265625, -0.031982421875, 0.021606...
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Problem based on square root If $\sqrt{6+\sqrt{6+\sqrt{6+......}}}$, then a) x=3 b) x= $\infty$ c) x=6 d) x=9 Please tell the answer with complete explaination :) Let: $x = \sqrt{6+\sqrt{6+\sqrt{6+ \cdots}}} > 0$ Now, note that if you square it and move +6 to the LHS: $x^2 = 6 + \sqrt{6+\sqrt{6+ \cdots}} \ \ \Leftrigh...
4
[ -0.01336669921875, -0.01019287109375, 0.039306640625, 0.053955078125, -0.043701171875, 0.04833984375, 0.025634765625, 0.033935546875, 0.068359375, -0.0162353515625, 0.026123046875, 0.0390625, -0.00885009765625, -0.0269775390625, -0.039306640625, 0.0137939453125, -0.0277099609375, 0...
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word problem and interval notation April 14th 2007, 08:33 PM rj2001 word problem and interval notation I never liked wp's the perimeter of a standard rug is 44ft the length is 2ft longer than the width find the dimensions width and length anyone please? interval notation of the set {xl -2 > x > 6} ...
4
[ 0.047119140625, 0.0703125, 0.0673828125, -0.03173828125, -0.033935546875, 0.09912109375, -0.043701171875, 0.123046875, -0.0703125, -0.025146484375, -0.00848388671875, 0.02294921875, 0.039306640625, -0.0196533203125, -0.0145263671875, 0.038818359375, 0.0186767578125, 0.0286865234375...
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Probability of C+A+R+D=35 August 5th 2012, 10:19 PM #1 Newbie Joined Aug 2012 From South Korea Posts 17 Probability of C+A+R+D=35 I was asked to solve the below. Could I get help? Four letters of C, A, R and D have its own natural number: 1,2,3,4,5,.... Sum of the four letters, C+A+R+D=35. ...
4
[ 0.035888671875, 0.017333984375, -0.0341796875, -0.07373046875, -0.0703125, 0.05322265625, 0.0296630859375, -0.00494384765625, -0.017333984375, 0.12451171875, -0.0269775390625, -0.01251220703125, 0.051025390625, 0.051025390625, 0.0283203125, -0.0291748046875, -0.000823974609375, -0....
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Min. Time Solution Let the speed of the car be v, the speed of a walking person be u, and the distance between cities by L. We want to minimize T, the time t at which all persons are at displacement x=L (city B), when they all start at displacement x=0 (city A) at time t=0. I'll assume that the solution has everyone s...
5
[ -0.015625, 0.002410888671875, 0.0274658203125, -0.011962890625, 0.0272216796875, 0.046875, -0.00201416015625, 0.09375, -0.023193359375, -0.01904296875, 0.0693359375, 0.0103759765625, 0.017578125, 0.07080078125, -0.06494140625, 0.064453125, 0.01129150390625, 0.01055908203125, 0.00...
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Multiplicative Inverse? December 27th 2007, 10:07 AM #1 Junior Member Joined Dec 2007 Posts 27 Multiplicative Inverse? Solve $3/4x - 5 = 4$ What I don't understand, is if I have to multiply each side by the reciprocal how do I do it if the reciprocal is infinite like 3/4, which ends up being 1.33333...
4
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Mixture story problem April 3rd 2012, 08:19 PM #1 Junior Member Joined Mar 2012 From United States Posts 43 Mixture story problem Trying to learn how to do these types of problems. The last one I had for homework was wrong. How much 12% Na[2]SO[4] and pure water must be mixed to produce 22.8 gal...
4
[ 0.00145721435546875, 0.01153564453125, 0.03466796875, 0.01007080078125, -0.001983642578125, -0.01531982421875, 0.0693359375, -0.005096435546875, -0.050537109375, 0.004730224609375, 0.021484375, -0.03955078125, 0.039794921875, 0.10009765625, -0.007598876953125, 0.0216064453125, -0.026...
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Approximate Sqrt(2) The Babylonian Method works well here. It makes use of the bisection method and the fact that if you divide a number by its square root, you get the square root. You need to make an initial guess. Since $\sqrt{1} < \sqrt{2} < \sqrt{4}$ that means $1 < \sqrt{2} < 2$. Average these endpoints to get $1...
4
[ 0.0498046875, -0.02587890625, 0.045654296875, 0.00994873046875, -0.057373046875, -0.11181640625, -0.072265625, 0.10009765625, 0.033935546875, 0.042236328125, -0.080078125, -0.036865234375, 0.052490234375, -0.017333984375, -0.091796875, -0.04150390625, 0.0267333984375, -0.0220947265...
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Is a quadrilateral cyclic? March 20th 2010, 03:16 PM #1 Newbie Joined Mar 2010 Posts 2 Is a quadrilateral cyclic? Prove that quadrilateral ABCD is cyclic if diagonal AC is perpendicular to side BC and diagonal BD is perpendicular to side AD. Need a hint to start...I'm stuck with this... Thanks ...
4
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Uniformly continuous #3 Prove that if f : (a,b)-->R is is uniformly continuous function in (a,b) so f is bounded function. Last edited by mr fantastic; January 3rd 2010 at 09:59 PM. Reason: Re-titled Assume it's not bounded then pick a (unbounded) sequence $(x_n) \subset (a,b)$ such that $f(x_n)<f(x_{n+1})$ for all $...
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Convergence of Solutions to a Certain Vector Differential Equation of Third Order Abstract and Applied Analysis Volume 2014 (2014), Article ID 424512, 6 pages http://dx.doi.org/10.1155/2014/424512 Research Article Convergence of Solutions to a Certain Vector Differential Equation of Third Order Department of Mathema...
5
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optimazation problem - cylinder April 21st 2010, 12:24 PM #1 Newbie Joined Apr 2010 Posts 3 hi,i wqas having a hard time solving this problem...any help would be great Consider a rectangle of perimeter of 12 inches. We obtain a cylinder by gluing vertical side to the other vertical side. Find the...
5
[ -0.017822265625, 0.076171875, -0.04931640625, -0.03955078125, -0.060546875, -0.00665283203125, 0.0145263671875, 0.09326171875, -0.03564453125, -0.0284423828125, -0.03125, 0.0595703125, 0.01611328125, 0.08154296875, -0.07568359375, 0.058349609375, -0.030029296875, 0.08544921875, -...
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Simple but difficult geometry question (picture included) - First post here :) October 9th 2012, 07:06 AM OriaG Simple but difficult geometry question (picture included) - First post here :) Hi all, first of all - my first post here. Nice to meet you all. I'm active on mymathforum if you guys post there from tim...
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the encyclopedic entry of eulers phi-function In mathematics , the Bell series is a formal power series used to study properties of arithmetical functions. Bell series were introduced and developed by Eric Temple Bell . Given an arithmetic function $f$ and a prime $p$, define the formal power series $f_p\left(...
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Related Rates Problems (two) November 2nd 2008, 08:51 AM bakeit1 Related Rates Problems (two) Alright, I will need some assistance for two problems that I face. Thanks in advance. A trough is 12 feet long and 3 feet across the top (see figure). Its ends are isosceles triangles with altitudes of 3 feet. ...
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pre-calculus urgent help with functions September 19th 2008, 12:16 AM #1 Newbie Joined Sep 2008 Posts 1 pre-calculus urgent help with functions A rectangle is created with two left hand vertices on the y-axis. One of the other vertices is on the line y=10-x and the other is on the line y=2x-5. Assuming t...
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[SOLVED] Is this double derivative correct? February 20th 2009, 02:37 PM #1 Newbie Joined Oct 2008 Posts 16 [SOLVED] Is this double derivative correct? Given: $<br /> f(x) = \frac{x^2}{x^2 + 4}<br />$ Using the quotient rule, I found that: $<br /> f'(x) = \frac{8x}{(x^2 + 4)^2}<br />$ ...
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[Pre-calculus][Functions] Stuck here, can't seem to figure it out. I don't think I've been taught what I need to know to do this. • /r/learnmath [Pre-calculus][Functions] Stuck here, can't seem to figure it out. I don't think I've been taught what I need to know to do this. (self.learnmath) submitted by fungah sor...
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