# Calculus

- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
 Meta Thread / Thread Starter Last Post Replies Views Views: 2,572 Announcement: Follow us on social media and spread the word about PF! Jan16-12 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 46,282 S is a portion of a curve with r(u,v) where 0 < u < 2 and 0 < v < 2pi I'm meant to calculate Flux of the vector... Apr26-13 09:19 AM Bipolarity 2 673 I have a question about limits at infinity, particularly, about a limit I have seen in the context of infinite series... Apr21-13 04:43 PM Bacle2 7 1,127 If I want to find \int f(x) dx where x=a+b and a and b are both variables how would I do this in terms of a and b.... Apr21-13 08:05 PM fzero 8 1,266 I'm scheduled to take Calculus II this Fall semester, but it will have been over a year since I'd taken Calculus I. I... Apr16-13 05:48 PM Lyrassia 8 1,124 Hello I was trying to solve this sample problem, but I really dont get it. The book says this word by word: The... Apr17-13 03:59 PM saplingg 2 4,079 Ive repeatedly asked people and my teachers how to solve logs by hand, and ive always got the same answer "They used... Apr21-13 08:41 PM cmcraes 4 902 Note: If this is the wrong sub-forum for this question please move it. I was not sure if this question should go in... Apr16-13 07:32 PM LCKurtz 1 585 I am working on the derivation of Green's Theorem. I might have more question in later post. I am looking at this pdf... Apr17-13 03:10 PM yungman 2 637 Hello all, I'm having trouble showing that |e^it|=1, where i is the imaginary unit. I expanded this to... Apr18-13 06:15 AM agentdoggett 6 3,897 Hi I am struggling trying to see understand the basic propagator integral trick. \int... Apr20-13 05:29 AM pleasehelpmeno 2 715 Is there any rule of thumb for which variable should be integrated first?, i.e. to make the whole process of double... Apr18-13 04:36 PM Simon Bridge 1 481 If I want to find the distance from a point to a plane. E.g. (2,1,-1) to the plane x+y+z=1 I know that distance... Apr20-13 05:23 PM mathman 8 823 The signal length from the satellite to the earth station can be found as 2(hs-he)/ if theta < 5 degrees Due to... Apr18-13 09:31 AM tiny-tim 1 510 so i have a question about calculating the RMS value of a fully rectified clamped sinusoid. Assumptions: The top... Apr20-13 10:18 AM Stephen Tashi 1 635 Hello, I was studying the theorem of smoothness/compactness in Fourier theory and at the very last step of the... Apr25-13 03:20 AM mnb96 5 891 Hi guys, I was solving this problem using backward interpolation ... Apr18-13 06:28 PM mfb 1 665 Hi guys, I am getting to the end of my cal 2 class and we're hitting infinite series, I was just curious what are... Apr21-13 04:13 PM mathsciguy 12 892 When doing a path integral to determine the work done by a particle : ... Apr19-13 08:34 AM HallsofIvy 1 455 Hello, Could anyone please explain me the steps in these pictures. I do not understand the second step. ... Apr21-13 09:37 PM Desii 3 754 The signal length from satellite to the earth station (AC) can be found as 2(H)/ Due to the earth projection ... Apr21-13 10:47 AM Mandelbroth 3 706 This is a copy of the book: http://i38.tinypic.com/20faqnc.jpg I know the derivation part, I just want to see... Apr21-13 03:39 PM yungman 2 503 Could you help me to find the general term of the sequence: ## 1 , \frac{5}{3} , 1 , \frac{15}{17} , 1 ,... Apr21-13 04:34 AM mfb 5 629 Is it posible that the product of two different divergent series be a convergent serie? Apr21-13 03:01 AM chiro 2 470 Hi all, could some one tell me what I am doing wrong in my analysis in the attached file? Its a parabolical flare... Apr26-13 04:35 AM cmmcnamara 6 938 I was sifting through the beginning of my book when i came upon a section based on marginals and differentials. My... Apr28-13 04:50 AM Fredrik 7 1,075 Can someone please show me how the formula \sum^{∞}_{0}\frac{u^{x}}{x!} = e^{u} Is derived? Or link me to an... Apr21-13 06:27 PM CraigH 3 733 Hello. I can't seem to wrap my head around the geometry of the gradient vector in ℝ3 So for F=f(x(t),y(t)),... Apr22-13 02:50 AM DFeng25 8 1,013 Hi! I am trying to solve this triple integral for computing the potential: ... Apr22-13 10:35 AM keyos89 4 623 Back to how income differences is explained in neoclassical theory, one can ask the question why GDP/capita is \$5200... Apr22-13 12:34 PM jbunniii 1 623 1. The following integral identity holds... Apr27-13 01:31 AM jarvisyang 4 922 I'm working on simple game and am working on a leveling system, using a function to get experience needed. I am using... Apr25-13 12:23 AM Brokenhope` 10 755 Hi, I'm doing an online course for Calculus 12 and I have been struggling with Implicit Differentiation, hoping... Apr24-13 06:15 AM playdohh 3 530 Hello Firstly apologies for what seems like an extremely fundamental question, it's been a while since I've done... Apr25-13 05:37 PM haruspex 4 701 Function is context is: $$\int \frac{(sin^22x)}{(4(1+3cos^2(x)))}dx$$ And according to wolframalpha (I wasn't able... Apr24-13 04:54 PM anj16 4 711 I'm trying to understand the concept of a Gradient vector, and it seems I'm having trouble visualizing certain stuff.... Apr26-13 06:50 AM WannabeNewton 3 679 Stokes' Theorem says the curve integral of any surface S simply equals the counter-clockwise circulation around its... Apr25-13 07:51 AM jambaugh 3 797 Hi all, I'm working on a math problem with a known answer - though I can't reproduce the maths. The problem is... Apr26-13 04:48 PM mfb 3 879 Instead of the shell method, can't one find the volume of a sphere by integrating/summing its horizontal areas? Apr26-13 12:24 PM Mark44 1 598 When creating a Fourier series for a function f(x), I consider whether the function is odd or even first. Yet, often... Apr27-13 07:03 PM micromass 3 770 The natural logarithm can be expressed as lim n(x^(1/n)−1) n->ifinity Can someone please derive... Apr28-13 06:34 PM tiny-tim 3 657