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Trig equation (and its solutions) September 25th 2008, 08:38 AM #1 (Should be) simple trigonometric equation: $\sin3x=\sin6x$. Given solutions [1] $x=\frac{k\pi}{3}$, [2a] $x=\frac{\pi}{9}+\frac{2k\pi}{3}$, [2b] $x=-\frac{\pi}{9}+\frac{2k\pi}{3}$ Why is it, that with 'sum (difference) theorem' $\sin6x-\s...
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Mech Test-Torsion ME 354, MECHANICS OF MATERIALS LABORATORY MATERIALS TESTING: TORSION TESTING* MGJ/10 OCT 96 PURPOSE The purpose of this exercise is to ob...
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Equation Of A Locus September 3rd 2009, 05:02 AM #1 Junior Member Joined Aug 2009 Posts 62 Equation Of A Locus I'm having trouble dealing with the following question. I need your help. Q) Find the equation of the locus of a point P whose distance from (-1,1) is equal to thrice it's distance from...
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second order differentiations stationary points problems on maxima and minima. June 5th 2010, 11:53 PM mastermin346 second order differentiations stationary points problems on maxima and minima. Two positive quantities, $p$ and $q$,very in such a way that ${p^3}{q}=9$.Another quantity $z$,is defined by $z=16p+3q...
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angle of flight September 8th 2008, 12:05 AM #1 Junior Member Joined Jul 2008 Posts 26 angle of flight I took off from an airport at an angle of 18Β° (nearest degree). At a horizontal distance of 1000m (3sf) away from where I take off there is a range of hills 300m (nearest 10m) high. If I maintain an...
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Geometric Sequences 2 February 26th 2013, 04:29 PM Mathnood768 Geometric Sequences 2 The color of some clothing fades over time when washed. Suppose a pair of jeans fades by 5% with each washing. a) What percent of the color remains after one washing? 95% b) If t1 = 100, what are the first 4 terms?...
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boat problem September 19th 2009, 12:57 AM #1 Member Joined Sep 2009 Posts 106 boat problem A boat costs x dollars, and this cost is to be shared equally by a group of people. In terms of x, how many dollars less will each person contribute if there are 4 people in the group instead of 3 ? If th...
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Tilting Pencil problem May 25th 2009, 08:05 PM #1 Newbie Joined May 2009 Posts 1 Tilting Pencil problem Okay, my friend any I are working on a calculus project where we must use calculus in every day life. Unfortunately, we chose a topic that is much more complicated then we should have done. We must...
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Physical Applications Β§10.73(i) Bessel and Modified Bessel Functions Bessel functions first appear in the investigation of a physical problem in Daniel Bernoulli’s analysis of the small oscillations of a uniform heavy flexible chain. For this problem and its further generalizations, see Korenev (2002, ChapterΒ 4, Β§37) ...
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Problems involving equal surface area and volume April 5th 2009, 06:23 AM #1 Member Joined Mar 2009 Posts 97 Problems involving equal surface area and volume I have had a few of these questions (both volume and surface area) and not comfortable with changing the formula over. Any help is appreciated to l...
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Math Help $\frac{(tan \theta + sec \theta -1 )}{(tan \theta - sec \theta +1 )}= tan \theta + sec \theta$ Last edited by z1llch; June 23rd 2009 at 06:18 AM. Reason: have no idea how to eliminate the one. The identity can be rewritten as: $tan \theta+sec \theta - 1=(tan \theta-sec \theta+1)(tan\theta+sec\theta)$ $tan ...
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Radioactive Logarithim October 5th 2012, 11:50 PM Filmstrip Radioactive Logarithim Hey guys, just found this forum after searching for days about this problem I've got. No where seems to have any relevant answers so I thought I might ask a forum for some help. Basically I've got a Methods Assignment and I ca...
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Adding fractions with unlike denominators None Adding fractions with unlike denominators Adding Fractions with Unlike Denominators Back Adding fractions with unlike denominators Discussion and questions for this video why does the denominator have to be the same as the other denominator Good question. In mathe...
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Compound Locus January 22nd 2007, 04:05 PM #1 Banned Joined Jan 2007 Posts 315 Compound Locus (1) What is a locus. (2) What is compound locus? QUESTION: Two points A and B are 6 units apart. How many points are there that are equidistant from both A and B and also 5 units from A? Locu...
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Could I beat Usain Bolt over 100m on my bike? Question: Could I beat Usain Bolt over 100 metres, if he ran and I biked? First thoughts: it might be possible, but I need to do some calculations to get an idea of whether it’s feasible or not. To win the Olympic Gold on Sunday, Bolt ran 100 metres in 9.63 seconds. That...
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Harmonic Conjugate February 12th 2009, 01:28 PM #1 Harmonic Conjugate u = log|z|, Re(z) > 0 show that this is harmonic (i.e. satisfies laplace) and find the harmonic conjugate. How would one do this? Thanks. By, of course, using the Definitions of those things. Writing z= x+ iy, |z|= $\sqrt{x^2+ y^...
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Homework Help Posted by Anonymous on Wednesday, December 26, 2012 at 3:53pm. Solve by completing the square. 5x^2+10x-7=0 My answer: x= -1+ or - 2sqrt.of 10 all over 5 β€’ Algebra 2 .. - Reiny, Wednesday, December 26, 2012 at 3:55pm divide by 5 x^2 + 2x + ... = 7 + ... x^2 + 2x + 1= 7 + 1 (x+1)^2 =...
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Homework Help Posted by Melinda on Monday, March 26, 2012 at 1:24am. Vector C=5 and Vector D=8. The angle formed by C and D is 35 degrees, and the angle formed by A and C is 40 degrees. Determine |B|. Here is the image for triangle: imgur dot com/OZAwV please help, I have a test tomorrow~ β€’ Calculus - Reiny, Mon...
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Partial Derivatives March 5th 2010, 08:44 AM #1 Newbie Joined Feb 2010 Posts 20 Partial Derivatives Hello everyone. I don't really know where to start with this problem. The gas law for a fixed mass Thanks for any help! Hi When you calculate partial derivatives you must consider t...
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Indefinite integration Express $\int (x\sec x)^2\;dx=\int x^2\sec^2 x\;dx$ and use integration by parts with $u=x^2,\;dv=\sec^2 x\;dx.$ \displaystyle \begin{align*} \int{\left(x \sec{x}\right)^2\,dx} &= \int{x^2\sec^2{x}\,dx} \end{align*} Use integration by parts with \displaystyle \begin{align*} u = x^2 \implies du =...
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Calculus Help Please Urgent!!! Posted by Selda on Sunday, April 13, 2014 at 10:39pm. find the limit algebraically. Use L'Hospital's Rule where appropriate. If there is a moare elementary method, consider using it. If L'Hospital's Rule doesn't apply, explain why lim -> 0 (cot(x)-(1/x)) show work please!!! β€’ Calcul...
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Urgent Math Help, due tomorrow!!! October 19th 2006, 04:52 PM #1 heiress28 Guest Urgent Math Help, due tomorrow!!! Hi everyone, I'm new here and I'm soooo happy I found this forum where people can help me! I'm in 12th grade and I'm a pre-calc student. There are two problems that are due tomorrow bef...
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User:Allison K. Alix/Notebook/Thesis Research/2013/10/08 From OpenWetWare (Difference between revisions) (β†’Calculating Ο‰0== using 10000X diluted green fluorescent beads) (β†’Calculating Ο‰0 using 10000X diluted green fluorescent beads) ← Previous diff ...
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Algebra-Reiny please explain this Posted by Anna on Monday, December 13, 2010 at 10:31pm. Hi Reiny, I posted this problem earlier and you responded but I don't get the reasoning- The problem was -2log8(x+1) = -8 you said multiply by -2 and then you put log8(x+1)=4(wasn't that dividing by -2) log8(x+1)^2 = 8 (how d...
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A couple of pre cal questions need help with January 17th 2008, 04:14 PM #1 Junior Member Joined Oct 2007 Posts 55 A couple of pre cal questions need help with 1. A buoy bobs up an down with the height H of its transmitter in feet above sea level modeled by h=a sin b t +5. The height varies from 1 ft to ...
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Adaptive-mesh-based algorithm for fluorescence molecular tomography using an analytical solution Β« journal navigation Adaptive-mesh-based algorithm for fluorescence molecular tomography using an analytical solution Optics Express, Vol. 15, Issue 15, pp. 9722-9730 (2007) http://dx.doi.org/10.1364/OE.15.009722 Abstrac...
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Posts from June 2008 on The Gauge Connection We have seen hereΒ that the gluon propagator can be fitted with a Yukawa form that gives a mass gap $m_0=1.25 \times 440 MeV = 550 MeV$. The pure number 1.25 fixes the ground state of the theory. Higher excited states in the spectrum will be characterized by a greater pure nu...
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Fourier Series December 9th 2008, 04:43 PM #1 Newbie Joined Nov 2008 Posts 16 Fourier Series HELP!!! How to find a fourier series for f(x)={(-Ο€(pi)/4 when-π≀x<0)and Ο€(pi)/4 when 0≀x≀π) Also,assuming that Fourier series converges show that Ο€/4=1-1/3+1/5-1/7... just for some quick clarificati...
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Mapping question June 13th 2011, 05:55 AM Glitch Mapping question The question For the mapping $f(z) = \frac{z - i}{z + i}$, find the image of $\{z \eo C : im(z) > 0\}$ My tutor did this a tricky way, by noticing that: $|f(z)| = |\frac{z - i}{z + i}| < 1$ Therefore, $|f(z)| < 1$ (which is jus...
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Solve the area of an isosceles triangle with differentials February 22nd 2013, 01:05 PM Jtgs5249 Solve the area of an isosceles triangle with differentials An isosceles triangle has equal sides of length 12m. If the angle theta between these sides is increased from 30 to 33 degrees, use differentials to approxim...
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Contour integral April 25th 2013, 04:58 AM #1 Contour integral Evaluate the contour integral $\int_\gamma \frac{1}{z} dz$ where $\gamma = {z \in \mathbb{C} : z=e^{i\theta}, \theta \in [-\pi/2, \pi/2]}.$ I keep getting $i\pi$ but the answer should be $-i\pi$, what am i doing wrong? Re: Contour integral T...
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Direct Products December 11th 2011, 06:37 PM #1 Junior Member Joined Sep 2009 Posts 62 Direct Products How do I do... Z x Z/<(1,2)> isomorphic to Z and Z x Z x Z/<(1,1,1)> isomorphic to Z x Z Thanks. Re: Direct Products What have you done my friend? Without any context, I'm not ...
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help me clean up a grp thry proof July 11th 2007, 01:14 PM #1 My proof of this problem looks clunky...suggestions for cleanup or different approaches are welcome. Sorry, I really need to get laTeX, this looks ridiculous without it. From 2nd ed. of I.N. Herstein's Topics in Algebra: Let G be a finite group...
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Summary: Differentiation and Tangency. Definition. Suppose X and Y are normed vector spaces, A is a subset of X and f : A Y . For each v X we let vf = {(a, w) int A Γ— Y : w = lim t0 1 t [f(a + tv) - f(a)]}. Owing to the uniqueness of limits we find that vf is a function with values in Y which we call the partial deriva...
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Regular Pentagon November 2nd 2009, 06:52 AM warriors837 Regular Pentagon The perimeter of a regular pentagon is 100 mm. Find the perimeter of the regular pentagon formed by connecting it diagonals? November 2nd 2009, 10:17 AM ukorov tried to draw a regular pentagon but not easy(Clapping) the pentagon...
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Math Help April 18th 2008, 10:20 AM #1 Member Joined Jan 2008 Posts 77 Induction Assume that x+(1/x) is an integer, how do I, by using induction, show that x^2 + (1/x^2) , x^3 + (1/x^3), .... , x^n + (1/x^n) are also integers? Hello First, show that $x^2+\frac{1}{x^2}$ lies in $\mathbb{N}$ by ...
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Posts from November 2009 on A Mind for Madness I don’t feel like an all out post, but I did need to use this fact today and it relates to what I’ve been doing, so may as well post the proof. Let $R$ be an integrally closed Noetherian domain. Then $R=\cap_{ht(p)=1}R_p$. We start with a Lemma: Every prime divisor of a n...
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more topology November 17th 2008, 04:04 PM #1 Junior Member Joined Sep 2008 Posts 42 more topology This problem has five parts, but I think I can get two of them. So Let B be the collection of subsets of R in the form [a,b) for all a < b, the empty set, and the whole set included. Let T be the ...
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Have I concluded a good formula October 1st 2011, 07:17 AM David Green Have I concluded a good formula The population of animal in a country Park increases in number by 11 percent each year. A survey counted the number of animal in the park at the start of a particular year. If the number of animals counted ...
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sequences and series geometric October 17th 2006, 03:43 PM #1 Newbie Joined Oct 2006 Posts 5 If the third and ninth temr of a geometric series with a positive common ratio are -3 and -192 repectively, determine the value of the first term a what formula would I use to answer this kind of question? ho...
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Complex numbers: solving equation September 11th 2012, 10:15 PM theintervurt Complex numbers: solving equation Here's what I've done so far. \displaystyle \begin{align*} z^2 = -8 + 6i \\(x + yi)^2 = -8 + 6i \\ (x^2 - y^2) + (2xy)i = -8 + 6i \\ \\ x^2 - y^2 = -8 \textrm{ and } 2xy = 6 \end{align*} Using...
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Why Stuff is Hard Why is stuff hard? That is, how can matter become solid, instead of just floating through us (or into the center of the earth) like a ghost? It might seem like a silly question, that the burdon of explaination ought to be on exceptions to the rule, such as holograms and optical illusions. But as I le...
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Quotient Groups November 15th 2009, 12:13 PM #1 Newbie Joined Dec 2008 Posts 21 Hi, So I have a problem that I have been looking at for 4 days now. Let F be the quotient group G/Z (Z is integers) where G= { ap^b in Q| a, b in Z} where Q is the rational numbers and Z is the integers. Let let...
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Number of congruence classes July 9th 2010, 12:27 AM #1 Senior Member Joined Apr 2009 Posts 306 Number of congruence classes How many classes of solutions are there to $x^2-1 \equiv 0 \pmod{168}$ So I did this: 1. Let a be the number of the classes of solutions to $x^2-1 \equiv 0 \pmod{2^3}$ ...
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Differentiation and Need HELP with LATEX! February 25th 2010, 06:53 PM #1 Junior Member Joined Jan 2010 Posts 52 g(x) = {-x, x<=0 3x^2,x>0 (a) Evaluate the limit of {g(x+delta x) - g(x)}/{delta x) for x<=0 and x>0 as delta x tends to 0 (b) evaluate the limit of {g(delta x) - g(0)}/{delta x) ...
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find the centre of S_n March 5th 2011, 08:17 PM abhishekkgp find the centre of S_n question 1) Prove that $Z(S_n)=1 \text{ for all } n \geq 3$. question 2) Prove that if $H \trianglelefteq G$ with $|G:H|=p,\text{ p is a prime}$, then for all subgroups K of G either $K \leq H$ or, $G=HK \text{ and } |K:K...
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MathGroup Archive: August 2007 [00668] [Date Index] [Thread Index] [Author Index] Re: Evaluating a convolution integral in Mathematica β€’ To: mathgroup at smc.vnet.net β€’ Subject: [mg80284] Re: Evaluating a convolution integral in Mathema...
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LinuxQuestions.org - Generating Gaussian Random Numbers kev82 08-10-2004 05:40 PM let X~N(mu,sigma) then z=((x-mu)/sigma)~N(0,1) this is basic normal dist stuff now lets do it backwards ie let z~N(0,1) then X=(sigma*z + mu)~N(mu,sigma) so there ya go. with a N(0,1) generator to make it N(mu, sigma) transform it by ...
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Polynomials November 7th 2006, 08:18 PM #1 Im supposed to factor polynomials but I have three problems I cant figure out ( when I have ^, it means its an exponent Thanks for any help I can get #1 12m^2 - m - 6 Im not sure what to do with the 12 #2 x^4 - 81 Im supposed to simplify ...
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Implicit function theorem: what if for a given x_i=x^0_i, there are more y_j=y^k_j? February 12th 2013, 12:10 PM #1 Newbie Joined Nov 2012 From Rome - Italy Posts 5 Implicit function theorem: what if for a given x_i=x^0_i, there are more y_j=y^k_j? In the case of m+n variables we have n equations $F_...
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Paired t test *** * PAGE RETIRED: Click here for the new StatsDirect help system. * OR YOU WILL BE REDIRECTED IN 5 SECONDS * *** Paired t test Menu location: Analysis_Parametric_Paired t. This function gives a paired Student t test, confidence intervals for the difference between a pair of means and, optionall...
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Mplus Discussion >> Computing effect sizes of of growth rates Message/Author David Myers posted on Thursday, April 06, 2000 - 11:46 am Imagine we have a growth model that is a quadratic, then the rate of learning can be expressed as S + 2Qt where S is the linear term, Q is the quadtratic term, t is time (this is just t...
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Initial value problem October 12th 2012, 08:54 AM #1 Newbie Joined Dec 2011 Posts 14 Initial value problem Suppose that m is a fixed positive integer. Show that the initial value problem: $u' = u^\frac{2m}{2m+1}$, u(0)=0 has infinitely many continuously differentiable solutions. I have solve...
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Definite Integration July 24th 2007, 07:53 AM #1 Newbie Joined Mar 2007 Posts 12 Definite Integration Hi, Could somebody please help me in getting a closed form expression for integrating the following expression: (1+(x^m))^n limits of integration are from 0 to 1. Integration is to be done...
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Quick Probability Questions November 15th 2006, 07:16 AM #1 Junior Member Joined Oct 2005 Posts 30 Quick Probability Questions 1) A and B are two independent events such that P(A)=alpha and P(A union B)= beta, Beta>Alpha. Show that: P(B)= Beta-Alpha/ 1-Alpha 2) Given that P(E)=1/3, P(F)=1/2, P ...
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MathGroup Archive: January 2001 [00333] [Date Index] [Thread Index] [Author Index] Re: Factor[1+x^4] β€’ To: mathgroup at smc.vnet.net β€’ Subject: [mg26889] Re: Factor[1+x^4] β€’ From: paradaxiom at my-deja.com β€’ Date: Fri, 26 Jan 2001 0...
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Standardized Kt/V From Wikipedia, the free encyclopedia Standardized Kt/V, also std Kt/V, is a way of measuring (renal) dialysis adequacy. It was developed by Frank Gotch and is used in the USA to measure dialysis. Despite the name, it is quite different from Kt/V. In theory, both peritoneal dialysis and hemodialysis ...
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m Introduction to String Searching Algorithms Rabin-Karp and Knuth-Morris-Pratt Algorithms The fundamental string searching (matching) problem is defined as follows: given two strings - a text and a pattern, determine whether the pattern appears in the text. The problem is also known as "the needle in a haystack probl...
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CRpuzzles Logic Problem Solution - The Good Sport Logic Puzzle # 154 Logic Problems Help Logic Problem Solution: The Good Sport From the...
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Volume of Sphere Inscribed within a Tetrahedron July 15th 2009, 05:37 PM #1 Newbie Joined Apr 2009 From California Posts 5 Volume of Sphere Inscribed within a Tetrahedron So we have a tetrahedral pyramid with side length a. What's the volume of the inscribed sphere that is tangent to the sides of the...
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Physics lab January 8th 2008, 01:10 PM #1 Member Joined Dec 2007 Posts 76 Physics lab Pendulum lab inital height of spring:11.5cm m=2000g d=8cm m=3000g d=6cm m=2500g d=7cm I need to calculate C....I'm not exactly sure how to do that... Maybe there's a mindreader cruising by wh...
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July 2 Only a few days left for your July MathAnagram. Either it's harder than I thought or no one is paying attention! SIR "OY", E. NOET! Look here for details. Probability questions will forever addle the minds of students and adults alike. If all problems could involve selecting one object randomly, life wou...
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Infinite Series. September 21st 2011, 07:20 PM #1 Newbie Joined Sep 2011 Posts 4 Infinite Series. I'm becoming increasingly irritated with a few questions given to me from my teacher about this subject, and would appreciate some help. They all seem extremely simple, but for some reason my answers, wh...
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Additive Inverse of a Polynomial Example: Find the additive inverse B of A, where A = 3x^2+7x+2. Solution: To obtain the additive inverse B of A, write the additive inverses of each of the coefficients of its terms. That is -3, -7, -2, are the coefficients of the terms in the polynomial B respectively. Therefore, B =...
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Homework Help Posted by Sasha on Saturday, January 21, 2012 at 4:04pm. There are 10 sailboats in the harbor. Some of the boats have 2 sail & some of boats have 3 sails. If there are 24 sails visible on all of the boats, how many boats have 3 sails & how many boats have 2 sails? β€’ Math - Al B., Saturday, January 21,...
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Taylor Polynomials May 28th 2007, 01:14 AM #1 Newbie Joined May 2007 Posts 21 Taylor Polynomials Now that CaptainBlack and Jhevon have helped me out with Latex notation I can ask my question. I was working on taylor polynomials and I ran into a little snag which has me stumped. For the function...
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Trig word problem - solving a trig equation. March 13th 2011, 06:17 PM #1 Newbie Joined Mar 2011 Posts 13 Trig word problem - solving a trig equation. I came across a word problem that I can't seem to puzzle through. I know the answer to it, but I can not seem to find out how to get to it. "A block ...
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Proof of triangle inequality. September 8th 2008, 02:37 PM reagan3nc Proof of triangle inequality. Prove: The sum of the lengths of any two sides of a triangle is greater than the length of the third side. This is known as the triangle inequality. I need some help with this proof. Thanks in advance...
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Arbitrary powers the question states f(x)=(1/2) (a^x+a^-x) if a>0. If f(x+y)+f(x-y)=kf(x)f(y), where k is a constant find that constant k :confused: did you write out the equation to see if you got any ideas? what have you tried? note that: $f(x) = \frac 12 \left( a^x + a^{-x} \right)$ $f(y) = \frac 12 \left( a^y + a^...
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Equation of a porabola April 14th 2007, 09:39 PM #1 Newbie Joined Apr 2007 Posts 6 Equation of a porabola Hi I was hoping someone could help me with a math problem I am confused about. If you could, please use simple steps. Thank you Here is what the problem looks like: The graph of a parabola ...
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Homework Help Posted by sam on Tuesday, September 8, 2009 at 10:22pm. Could someone help explain what I am to do? The amount of background noise is important to television news reporters. One station developed the formula n= -t^2 + 12t +54 showing the noise level in decibels (N) as it relates to the time after th...
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Ray-Sphere Intersection Prev: Plane Next: Ray-Triangle Intersection Given a ray, defined by a point and a unit vector, and a sphere do they intersect? If so where? Do they intersect in a single point, or in two points? In the figure below we can see several possibilities. The first question is whether the ray inte...
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intensity of beam of light April 9th 2010, 07:22 PM sigma1 intensity of beam of light i have a tricky question here, i hope am putting it in the correct section. the intensity (I) of a beam of light after passing through a material is given by the formula ( i did it as an attachment so look at it please) ...
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differential equations modeling October 22nd 2007, 10:44 AM #1 Junior Member Joined Aug 2007 Posts 71 differential equations modeling You have a bank account that earns 4% interest per year. You earn $4500 per year designing web pages for local businesses and spend $5000 buying CD's and computer games. ...
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Posts by Total # Posts: 10,590 math :) You're welcome! math Assuming you mean A= -3(a + b - (1/3)c) when parentheses are used correctly. Divide both sides by -3, and swap sides a+b-(1/3)c = -A/3 -(1/3)c = -A/3-a-b Divide both sides by -(1/3) c = A+3a+3b Physics I NEED HELP BADLY :) You're welcome! Physics I NEED H...
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st: Re: about STATA [Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index] st: Re: about STATA From Kit Baum <baum@bc.edu> To <psxu@u.washington.edu> Subject st: Re: about STATA Date Wed, 17 Aug 2005 21:22:15 -0400 Dear Tracy I believe this will do the trick. If you run into trouble w...
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Homework Help Posted by lisa on Sunday, March 10, 2013 at 11:53am. 8^x+1=3 β€’ math - Reiny, Sunday, March 10, 2013 at 12:08pm I have a feeling that you mean 8^(x+1) = 3 if not, then it would be real easy 8^x + 1 = 3 8^x = 2 and we now the cube root of 8 is 2, so x = 1/3 if 8^(x+1) ...
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Second order linear ODEs [Notes on Diffy Qs home] [PDF version] [Buy cheap paperback version] [next] [prev] [prev-tail] [tail] [up] 2.1 Second order linear ODEs Note: less than 1 lecture, first part of Β§3.1 in [EP], parts of Β§3.1 and Β§3.2 in [BD] Let us consider the general second order linear differential equation...
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What's so special about this composite number April 21st 2010, 12:12 PM undefined Quote: You have some valuable suggestions. Can you elaborate on how your increment scheme avoids multiples of 3 and how you know you won't miss any primes in between? So how do you know alternating between adding 2 and 4 s...
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Projectile Motion February 14th 2011, 12:15 PM #1 Member Joined Nov 2010 Posts 164 Projectile Motion I have the following problem: A projectile of mass m is launched from the origin at time t=0, with speed U, at an angle of elevation a+b to the horizontal. The launch site lies on a ramp that makes an...
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Integration problem with maximum function inside integral February 12th 2010, 04:41 PM ichoosetonotchoosetochoos Integration problem with maximum function inside integral Hello. I have two questions, I'll be extremely cheerful if anyone can provide an answer. I have got two equations as follows $r*U=b+...
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TO ANY MATH HELPERS Posted by Miley on Monday, November 18, 2013 at 8:08pm. Pleeeese help! Use the substitution method to solve each linear system: -x+3y+1=0 3x-y+1=0 4x-3y=-13 -2x+y=4 Please help, thanks:):)!!!! β€’ TO ANY MATH HELPERS - Tim, Monday, November 18, 2013 at 8:37pm 1) x= -.5 y= -.5 ...
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FLT Problem May 13th 2009, 11:08 AM #1 Junior Member Joined May 2009 Posts 25 FLT Problem Question: Prove the following assertion: The system of simultaneous equations x^2+y^2=z^2-1 and x^2-y^2=w^2 has infinitely many solutions in positive integers x, y, z, w. I was thinking I could consider th...
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Physics Problem October 5th 2006, 07:48 PM #1 Member Joined Dec 2005 Posts 117 Physics Problem A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 582 N. As the elevator later stops, the scale reading is 399 N. Assume the magnitude of the acceleratio...
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business math Posted by Valerie on Friday, January 14, 2011 at 7:30pm. I'm trying to solve this problem: What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to 20,000. I just need to know how to work the problem correctly. β€’ busi...
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Implicit Differentiation May 25th 2010, 08:47 AM krzyrice Implicit Differentiation Assuming that the equations define x and y implicitly as differentiable functions x = f(t), y = g(t), find the slope of the curve x = f(t), y = g(t) at the given value of t. http://www.testdesigner.com/include/...-6451386...
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Homework Help Posted by thommini on Saturday, February 20, 2010 at 7:16am. If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph? ( please help me with the working thanks ) β€’ maths - drwls...
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Homework Help Posted by Shreya on Friday, January 6, 2012 at 8:40pm. 5a-3/a+7 = 5a-14/a+1 so i find that only lowest common denominator for equation is (a+7)(a+1) (a+7)(a+1)(5a-3/a+7) = (5a-14/a+1)(a+7)(a+1) in first part i get rid of a+7's and in second part i get rid of a+1's. (a+1)(5a-3) = (5a-14)(a+7) 5a^2+2a...
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Solomonoff & Kolmogorov) Other Links: The home page of one of Algorithmic Information Theory's inventors, computer scientist and mathematician Gregory Chaitin. Many of his papers are available here. A web site dedicated to mathematician Andrei Nikolaevich Kolmogorov. A web site with numerous references and...
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Hilbert Spaces Proof May 8th 2010, 04:00 PM #1 Newbie Joined Mar 2010 Posts 19 Hilbert Spaces Proof 1) X is a sequence of terminating sequence over C and let: Show M is a closed subspace of X, and M(perp)={0} 2) Let H be a Hilbert space and let {h(j)} where j belongs to J be a basis. The ...
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Maxima Minima question February 28th 2013, 01:26 PM numpty Maxima Minima question I'm new to the forum and i'm not even sure that this question should be posted in this section but i hope someone can point me in the right direction. A piece of string 30 inches long has its two ends joined together and is st...
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Math Help May 3rd 2012, 11:29 AM #1 Newbie Joined Apr 2012 From alger Posts 9 PDE Can we say that the boundary integral conditions= the nonlocal boundary condition?!! -When the generalized solution = the weak solution? -What's the norm of the sobolev space H^{-r} and how we can say u_{m}^{p-...
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Homework Help Posted by Sandra on Monday, May 5, 2014 at 5:20pm. Multiply: (K+3)/(4K-2)*(12K^2 + 2k – 4) β€’ 3(k+3)/(3k+2) β€’ 3(k+3)(2k-1)/2 β€’ (x-5)(3x+2) β€’ (x-5)(12x+8) How? 11 β€’ ALGEBRA - Steve, Monday, May 5, 2014 at 5:58pm well, 12k^2+2k-4 = 2(3k+2)(2k-1) so, we have (k+3)/2(2k-1) * 2(3k+2)(2k...
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GCD and the Euclidean Algorithm What can you conclude about gcd(a,b) if there are integers s,t with as+bt=6? we can conclude that gcd(a,b) is a divisor of 6. Also you can conclude that a and b are NOT relatively prime since their gcd is 6. Because two integers a and b are relatively prime if gcd(a,b)=1. To expand up...
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Horizontal asymptote of this function $f(x)=\sqrt{x^2+4x} - \sqrt{x^2+x}$ How would I find the horizontal asymptote of this function? This is ugly, but might be the best way.... (Considering "the bottom" to be "1") Multiply top and bottom by the conjugate ... $\sqrt{x^2 + 4x} + \sqrt{x^2 + x}$ Then you'll have 3x on t...
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SparkNotes: SAT Physics: Resistance 14.1 Voltage 14.6 Capacitors 14.2 Current 14.7 Key Formulas 14.3 Resistance 14.8 Practice Questions 14.4 Energy, Power, and Heat 14.9 Explanations 14.5 Circuits Resistance Some materials conduct current better than others. If we ...
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Management accounting--financial strategy: calculating a weighted-average cost of capital is a key skill for P9 students, as it's very likely to be examined. William Parrott shows how it's done. Link/Page Citation In essence, the weighted-average cost of capital (WACC) is a simple concept. An entity's cost of cap...
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unbound solution May 13th 2012, 05:24 AM #1 Member Joined Jan 2011 Posts 83 Thanks 1 unbound solution for an ordinary differential equation $y" + py' +(p^2/4) y =0$ there exist a unbounded solution y(x) $limit$$x->infinite$$|y(x)/x|$ exist. can anyone explain how the unbounded solution ...
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Prove f has at most one fixed point in I. November 15th 2009, 04:43 PM #1 Member Joined Oct 2009 From Canada Posts 128 Prove f has at most one fixed point in I. A number c is called a fixed point of f if f(x) = c. Prove that if f is differentiable on an interval I and f'(x) < 1 for all x $\in$I, then...
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[SOLVED] linear kinematics January 25th 2009, 12:28 PM ally79 [SOLVED] linear kinematics hi there, i need apointer on this question, i've completed a, b half of c and d. BUt i'm getting abit stuck proving c again. Iill show the question then what i've got so far A man standing at the top ad near the edge of...
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