Threads Tagged with contradiction Thread / Thread Starter Last Post Replies Views Forum 1. The problem statement, all variables and given/known data My question basically wants me to write the direct... Nov23-13 07:47 PM Silversonic 0 146 Calculus & Beyond Homework following is what little I know about energy:Energy: its the ability to do the work. First law says you cannot... Nov12-13 06:13 PM sophiecentaur 6 766 General Physics Prove by contradiction that a real number that is less than every positive real number cannot be positive having... Sep30-13 12:23 AM berkeman 5 314 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Hello Guys, can you check my proof. Problem... Sep15-13 05:50 AM CAF123 13 297 Calculus & Beyond Homework According to my prof, increasing intensity of the light source in a photocell for the photoelectric effect does not... Sep9-13 03:29 PM dauto 2 395 General Physics We know that the rate at which electrical work is done (electrical power) is defined as: P = I2*R , or: P =... Aug20-13 05:06 AM FredericChopin 3 326 Classical Physics Hi guys, lets say we have a wave where the power P is proportionate to the square of its amplitude, which is A^2. If... Aug9-13 08:08 AM Simon Bridge 3 326 Introductory Physics Homework To solve a 2nd order ODE, we can follow the steps as shown below. (Image 2 is a continuation from Image 1, apologies... Aug6-13 01:57 PM tade 2 428 Differential Equations 1. The problem statement, all variables and given/known data If ##n = 2k## is even and ##n \ge 4##, show that ##z =... Jul14-13 08:53 PM micromass 1 308 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data The potential at a point is 20 V. Calculate the work... Apr28-13 07:16 AM haruspex 6 264 Introductory Physics Homework I was reading here http://www.physicsforums.com/library.php?do=view_item&itemid=294 gauss law's for magnetism says... Apr17-13 06:53 PM vanhees71 3 527 Classical Physics 1. The problem statement, all variables and given/known data Please check that the proof is correct or not. Let ℝ+... Apr15-13 08:24 AM yy205001 4 382 Precalculus Mathematics Homework 1. The problem statement, all variables and given/known data Prove that if x^2 + y = 13 and y \neq 4 , then x... Mar24-13 01:50 AM Cole A. 3 361 Calculus & Beyond Homework Well, this question may seem elementary to you but I simply do not have a background for it. Now the question: Sun... Mar19-13 11:25 AM jlefevre76 11 856 Classical Physics So for the phase velocity of a massive particle we have Vph = Vg/2 for non-relativistic case Vph = c^2/Vg for... Mar7-13 06:15 AM Bill_K 1 516 Quantum Physics 1. The problem statement, all variables and given/known data Is the set $$\{cos(x), cos(2x)\}$$ linearly... Feb10-13 02:14 AM mef51 1 309 Calculus & Beyond Homework I'm reading through a text's proof on proof by contradiction. But it makes inexplicable jumps and doesn't appear to... Jan20-13 10:07 PM Klungo 5 898 General Math I've just started studying college math. I read the proof by contradiction is based on the law of excluded middle.... Nov3-12 05:10 PM Bacle2 1 580 Set Theory, Logic, Probability, Statistics 1. The problem statement, all variables and given/known data Two equal, parallel and opposite forces at at both sides... Oct30-12 06:55 AM tiny-tim 7 809 Introductory Physics Homework 1. The problem statement, all variables and given/known data Prove that for any integer n n^2+n+1, can never be a... Sep10-12 07:18 AM haxan7 5 707 Engineering, Comp Sci, & Technology Homework 1. The problem statement, all variables and given/known data Prove by Contradiction: For all integers x greater than... Aug7-12 03:19 AM Millennial 2 548 Precalculus Mathematics Homework Le Chatlier's Principle is used to determine the direction of a reaciton based upon a stress put on the system. In... Aug2-12 06:21 PM johnny_b_good 3 636 Chemistry 1. The problem statement, all variables and given/known data Prove by Contradiction: For all Prime Numbers a, b, and... Aug1-12 01:25 PM HallsofIvy 1 837 Precalculus Mathematics Homework Say I have a statement like this: P implies (Q1 and Q2). If I wanted to prove this by contradiction, I would... Jul19-12 10:11 PM jbriggs444 3 833 General Math I came across this when doing another problem: Suppose we have 2 numbers, (a+b) and (c+d), which both equal 0. ... Jul12-12 01:26 AM Mentallic 3 534 General Math So, I was thinking a lot about different ways to order the irrationals. Most of them had to do with... Jul11-12 06:45 PM middleCmusic 11 1,671 Linear & Abstract Algebra Let x,y,z be integers satisfying a specific condition, which boils down to 5|(x+y-z) and... Jul8-12 02:32 AM haruspex 1 1,170 Linear & Abstract Algebra I posted this in the number theory forum to no success... so I figured maybe the homework help people would have some... Jul7-12 10:19 AM Yukoel 1 465 Calculus & Beyond Homework It seems to me (though I would be *extremely* glad to be proven wrong here) that in mathematics we often blindly... May30-12 08:06 PM Tac-Tics 15 2,133 General Math I think the title is self-explanatory. The first theorem states that gravitational forces (1/r potentials in general)... May27-12 05:06 PM Trifis 7 1,291 Classical Physics Can anyone provide an explanation for this claimed contradiction between basic electromagnetism and momentum... May3-12 07:06 PM Vanadium 50 1 1,105 Special & General Relativity 1. The problem statement, all variables and given/known data Suppose I want to prove the following statement by... Apr13-12 03:30 PM cris(c) 6 815 Precalculus Mathematics Homework Suppose we have two objects and we're only talking about rectilinear motion. Initially, one object has mass m and is... Mar19-12 03:27 AM zhangyang 9 1,518 Classical Physics My textbook (Halliday & Walker) explains that a charged conductor (a solid, of an arbitrary shape) in electrostatic... Mar8-12 05:53 AM Hassan2 17 2,068 Classical Physics I never understand the proof by contradiction, because somewhere in the middle I always lost myself. In this... Feb18-12 11:46 AM alan2 1 1,152 General Math Hi, I have a question about proofs by contradiction in general. Without getting into the mathematical details, suppose... Feb18-12 09:27 AM HmBe 2 566 Calculus & Beyond Homework 1. The problem statement, all variables and given/known data If a,b and c are integers and a2+b2=c2, then at least... Feb13-12 12:12 AM Dick 6 841 Calculus & Beyond Homework Hi all! We were given to proove or falsify the following statement: Given f(x)>0 \,\ ,\,x>0 ... Feb12-12 05:02 PM oferon 2 794 Calculus list of contradictory situations. 1. Age of universe is determined by rate of proton decays at some place taking into... Jan24-12 01:02 PM Naty1 8 1,115 Special & General Relativity Prove: If f approaches l near a and f approaches m near a, then l = m. ....Im skipping to the end of the proof... ... Jan3-12 01:25 PM Joffan 1 508 Calculus & Beyond Homework