even Definition and 664 Threads

The break-even point (BEP) in economics, business—and specifically cost accounting—is the point at which total cost and total revenue are equal, i.e. "even". There is no net loss or gain, and one has "broken even", though opportunity costs have been paid and capital has received the risk-adjusted, expected return. In short, all costs that must be paid are paid, and there is neither profit nor loss. The break-even analysis was developed by Karl Bücher and Johann Friedrich Schär.

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  1. ?

    Can a Function be Both Even and Odd at the Same Time?

    I have been looking at my old calculus textbook because to my dismay I seem to have forgotten most of the calculus I learned. I am given 3 cases of ##(f+g)(x) ##. Case 1 both f and g are even: I know ##f(x) = f(-x) ## and ##g(x)=g(-x) ## for the domain of the function. I can reason by...
  2. Ganesh Ujwal

    Why isn't length contraction permanent even though time dilation is?

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  3. J

    MHB Formally describe a Turing machine which decides if an input is odd or even.

    Hi, I need to use a transition function to describe a Turing machine that decides if $ a^n ∈ {a}^∗$ is odd or even. I've got an example in my notes that erases any input and halts. But I am struggling to do one for the odd and even question. Thanks for any help!
  4. M

    Even and Odd functions - Fourier Series

    Hello everyone, I know that the integral of an odd function over a symmetric interval is 0, but there's something that's bothering my mind about it. Consider, for example, the following isosceles trapezoidal wave in the interval [0,L]: When expressed in Fourier series, the coefficient...
  5. Fallen Angel

    MHB Perfect Numbers: Proving Even Exponents

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  6. B

    Why is the current voting system in the UK flawed and how can it be improved?

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  7. M

    On partitioning an even number into a pair of (relative) primes

    An example:For m= 176 (132<176<172 one finds r=(3-2)x(5-2)x(7-2)x(11-1)x(13-2)=1650 relative primes (0<v<2x3x5x7x11x13), forming 825 asymmetric pairs, among them four partitions into prime numbers:19+157, 37+139, 67+109, 73+103, 79+97.
  8. ohwilleke

    Does LQG Do Nothing Cool Even If It Is Right?

    In "Loop quantum gravity and observations" by A. Barrau and J. Grain at http://arxiv.org/abs/1410.1714 the bottom line seems to be that the phenomenological implications of LQG relative to existing predictions from GR are so extremely subtle that they have virtually no practical effects that can...
  9. M

    MHB A group of even order contains an odd number of elements of order 2

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  10. R

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  11. T

    In proof of SQRT(2) is irrational, why can't a,b both be even

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  12. 1

    Subgroup proof - is this even true?

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  13. Gliese123

    Why is cos(t)(cos(wt) - jsin(wt)) considered negligible in integration?

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  14. grandpa2390

    Decomposing Heavy Side Step Function into even and odd components

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  15. 1

    Finite group of even order has elements of order 2

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  16. G

    Natural Selection, why not even better?

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  17. hellsteiger

    Expectation Value of Position for Even Wavefunction

    Homework Statement Hello, I need to calculate the expectation value for position and momentum for a wavefunction that fulfills the following relation: ψ0(-x)=ψ0(x)=ψ*0(x) The wave function is normalised. Homework Equations There is also a second wave equation that is orthogonal...
  18. S

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  19. M

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    Homework Statement . Let the ##\mathbb R##- vector space ##C([-1,1])=\{f:[-1,1] \to \mathbb R\ : f \space \text{is continuous}\ \}## with the inner product ##<f,g>=\int_{-1}^1 f(t)g(t)dt##. Determine the orthogonal complement of the subspace of even functions (call that subspace ##S##). The...
  20. alexsylvanus

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  21. evinda

    MHB Arrangements of numbers-odd and even positions

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  22. P

    Atomic Probability Densities Always Even?

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  23. S

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  24. G

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  25. T

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  26. F

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  27. alyafey22

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    Contemporary Abstract Algebra by Gallian This is Exercise 24 Chapter 3 Page 70 Question Suppose $n$ is an even positve integer and $H$ is a subgroup of $\mathbb{Z}_n$. Prove that either every member of $H$ is even or exactly half of the members of $H$ are even . Attempt We consider some...
  28. J

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  29. PsychonautQQ

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    Hey PF. I was wondering if anyone can help me figure out i can tell if certain functions are even or odd. For example, the function i*cos(ax)*sin(bx) when integrated with respect to x between -1/2 and 1/2 is equal to zero. I believe this means that it is even because it is symmetric around the y...
  30. mesa

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  31. Conservation

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    Tension -- how is mechanical tension even defined? Hello, I'm currently a student in AP Physics having a little trouble with the concept of tension, especially that of a pulley system or an Atwood machine. First, how is tension even defined? Is it the reaction force to the applied force on...
  32. B

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  33. M

    How is NaOH considered a strong base does it even accept protons?

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  34. K

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  35. C

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  36. feyn

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  37. L

    Why are certain transformations in the case of D4 group considered even or odd?

    Why ##\rho,\rho^2,\rho^3,\rho^4## are even transformation and ##\rho\sigma,\rho^2\sigma,\rho^3\sigma## are odd transformation. I'm talking about case of ##D_4## group, where ##\rho## is rotation and ##\sigma## is reflection.
  38. I

    What are the criteria for identifying singularities in complex analysis?

    I am getting two different answers with two different methods so can someone point out the error? \int\limits_{-\infty}^{\infty} \frac{1}{x^2}dx = 2 \int\limits_{0}^{\infty} \frac{1}{x^2}dx = - \frac{2}{x} |_{0}^{\infty} = \infty \int\limits_{-\infty}^{\infty} \frac{1}{x^2}dx = -...
  39. A

    How do I determine if a plane is even with respect to an axis?

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  40. H

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    Consider a photon which is scattered by a crystal elastically. In an elastic scattering we have |k_i|=|k_f| and k_f - k_i = G where G is a reciprocal vector. But according to momentum conservation, the crystal must obtain a momentum \hbar G and hence the kinetic energy, so according...
  41. T

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  42. G

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  43. A

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    Homework Statement Homework Equations The Attempt at a Solution $$f(-x)=\begin{cases} -x+5,\quad -2<x<0 \\ x+5,\quad 0≤x<2 \end{cases}\\ =f(x)$$ The issue is that I can't get to the second step. I know the function is even.
  44. A

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  45. T

    How long does it take to make homework that comes out even, when there

    I'm starting to get to a point where the numbers are getting sometimes well beyond 3 digits in length and, I'm constantly amazed at the fact that there are usually no decimals anyplace in the actual problem, and I was wondering how long does it take to find questions that don't have decimals in...
  46. r-soy

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  47. P

    Is there current even with huge resistances?

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  48. Y

    Older Photoshop won't even load in Win 7

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  49. P

    Admissions Cornell physics PhD admissions? Is it pointless for me to even apply?

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  50. Y

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