Calculus

- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
 Meta Thread / Thread Starter Last Post Replies Views Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions... Feb23-13 09:24 AM micromass 1 40,144 I don't quite understand the context of common tangent problems. This is one of the problems I am trying to solve:... T 11:46 AM Mr. Fest 8 113 let D be simple connected Domain and C be simple close curve in D. then by cauchy integral theorm ∫(z) dz over C ... T 07:10 AM SteamKing 1 78 Assume that f:\mathbb{R}^N\to\mathbb{R} is a differentiable function and that x_0\in\mathbb{R}^N is a local minimum of... T 02:26 AM jostpuur 6 137 Hi! Consider the function \frac{d^n}{dx^n} \sum_{k=1}^m \sin{kx}, \quad 0 \leq x \leq \pi/2 . If n is odd... Y 11:16 PM Simon Bridge 1 138 I guess I have several definitions of df flying at me, and I am having trouble getting a continuous definition. So in... Y 05:37 PM gopher_p 1 89 Integrals containing \frac{1}{\sqrt{x^2+a^2-2xa \cos{\theta}}} occure frequently in physics but I still have problem... Y 11:11 AM JJacquelin 1 110 Hello, This might seem like a very basic problem for the most of you but I am a little bit confused as to the... Y 10:37 AM Mr. Fest 6 133 - - - So here's a little background for the question: I have an arc that covers 3/4s of a circle (so it's not quite a... Apr22-14 05:12 PM alpha754293 7 161 I am currently writing a c++ program to calculate the Value of the Reimann Zeta Function, The problem is At the state... Apr22-14 05:02 PM cmcraes 0 97 Hi, I need some clarification on exactly which critical points are saddle points. The definition I am finding... Apr22-14 02:01 PM D_Tr 2 145 Hello everyone, I have recently bumped into the Kramers Kronig Relations while reviewing some of my Eletromagnetism... Apr21-14 08:29 PM jbunniii 7 230 Say for some general function f(x), and g(x) = ∑x=0∞ f(x) (assuming function is defined) Is there a way to find the... Apr20-14 03:30 PM cmcraes 8 205 So I was doing my calc homework when I stumbled upon this thought: lets say you were trying to find the solid of... Apr20-14 02:11 PM SteamKing 1 133 Hi I am facing a mathematical problem in my research. I am not a maths magor and i need to do this to move on with my... Apr20-14 12:58 PM Aladdin123 22 451 I do not know how to formulate formulas on this forum so I just wrote it neatly on a piece of paper and linked it. ... Apr19-14 07:21 PM Mark44 1 147 How is this limit evaluated? \lim_{k->0}\frac{sin(\pi k)}{sin(\frac{\pi k}{N})} I know that it is N, but I... Apr19-14 01:54 AM JJacquelin 1 279 If exist a connection between the infinitesimal derivative and the discrete derivative $$d = \log(\Delta + 1)$$... Apr18-14 05:17 PM Jhenrique 6 183 Hey guys, just trying to understand how the quotient rule is derived, so I head over to wikipedia and saw this: ... Apr18-14 02:14 PM gomess 4 177 Hello, I have a real world application that I need some help with. I am sensitive to the fact that this is not the... Apr18-14 01:12 PM berkeman 2 153 Hello, Wolfram is giving me the required answer however, the steps it uses I find very confusing. Can anyone share... Apr18-14 09:53 AM Mark44 1 196 For my own use and consumption, I created a generalization of the nth integral of a function f and I'm posting it here... Apr18-14 03:03 AM pwsnafu 5 267 Accidentally I wrote in the wolfram f(x) = f(1/x) the the wolfram give me the solution for this equation (f(x) =... Apr17-14 08:45 PM Simon Bridge 11 348 Hi all, I'm working on some QFT and I've run into a stupid problem. I can't figure out why my two methods for... Apr17-14 01:51 PM welcomeblack 2 185 Hello, I've come across equations where people use the approximation \int_0^1 \exp(f(x))\, dx \approx \exp \left(... Apr16-14 09:57 PM welcomeblack 1 192 Hi I am currently reading a book where this showed up: The author gave a ##3## parameter equation (note ##Y##... Apr16-14 12:20 AM Red_CCF 1 377 i'm trying to integrate this: $$W=\frac{ε}{2}\int{\vec{∇}\cdot\vec{E})Vdτ}$$ where ε is a constant, E= -∇V, τ is... Apr15-14 09:35 PM Simon Bridge 4 285 I am working on the derivation of the angular momentum squared operator (in quantum mech.) and there is one step that... Apr15-14 07:53 PM hideelo 2 173 \int \frac{d}{dx}f(x)dx = f(x) + C_x \iint \frac{d^2}{dx^2}f(x)dx^2 = f(x) + xC_x + C_{xx} \int... Apr15-14 02:48 PM Mark44 7 335 Hey guys, I'm really really confused on how we come about the plane z = x - y. I always have been and it's proving to... Apr15-14 08:47 AM HallsofIvy 2 208 I'm brushing up on calculus. I don't see how this derivative works. x(t) = A cos(ωt - \varphi) v(t) = dx / dt = ... Apr14-14 06:49 PM jbunniii 1 209 I understand how to use it, but I'm just getting really confused on when you use it? Is there a way you can look at... Apr14-14 06:45 PM Jhenrique 4 316 Hi! I am having trouble following the derivation from Euler's Equation to Bernoulli's Equation. The trouble lies in... Apr14-14 01:38 PM Einj 3 286 how do I find the derivative of tanh^-1(sinh(2x)) do I just find derivative of tanh^-1(x) this then substitute... Apr13-14 08:14 PM AMenendez 2 278 please tell me if i did this correctly: task: i'm trying to divide the differential dA by dV where.. dA =... Apr13-14 03:57 PM HallsofIvy 3 250 Hi all ! I'm new here :) So I'm facing some confusions here regarding integration by parts. While surfing through... Apr13-14 01:10 AM O.CModderz 9 413 the coordinates of cycloide are ##x= a (\theta- sin \theta)## ##y= a(cos \theta -1)## If i use ##\theta =\omega... Apr12-14 10:16 PM Simon Bridge 3 267 A uniformly convergent sequence of continuous functions converges to a continuous function. I have no problem with... Apr11-14 01:26 AM GenePeer 5 581 Hello. My first time posting here. So... My question is kinda hard to explain but I will try to. So we all know about... Apr9-14 02:00 PM AlfredB 0 276 Hello, Consider two particles which interact via a Gaussian potential: V(\mathbf{x}) = \exp(-\mathbf{x}^2) I... Apr9-14 11:08 AM Irid 0 233

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