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  2. Arc elasticity - Wikipedia

    en.wikipedia.org/wiki/Arc_elasticity

    The y arc elasticity of x is defined as: , = % % where the percentage change in going from point 1 to point 2 is usually calculated relative to the midpoint: % = (+) /; % = (+) /. The use of the midpoint arc elasticity formula (with the midpoint used for the base of the change, rather than the initial point (x 1, y 1) which is used in almost all other contexts for calculating percentages) was ...

  3. Elasticity of a function - Wikipedia

    en.wikipedia.org/wiki/Elasticity_of_a_function

    The elasticity at a point is the limit of the arc elasticity between two points as the separation between those two points approaches zero. The concept of elasticity is widely used in economics and metabolic control analysis (MCA); see elasticity (economics) and elasticity coefficient respectively for details.

  4. Flamant solution - Wikipedia

    en.wikipedia.org/wiki/Flamant_solution

    [3] [4] Let the bounded wedge have two traction free surfaces and a third surface in the form of an arc of a circle with radius . Along the arc of the circle, the unit outward normal is = where the basis vectors are (,). The tractions on the arc are

  5. Price elasticity of demand - Wikipedia

    en.wikipedia.org/wiki/Price_elasticity_of_demand

    Loosely speaking, this gives an "average" elasticity for the section of the actual demand curve—i.e., the arc of the curve—between the two points. As a result, this measure is known as the arc elasticity, in this case with respect to the price of the good. The arc elasticity is defined mathematically as: [16] [17] [18]

  6. Stress functions - Wikipedia

    en.wikipedia.org/wiki/Stress_functions

    In linear elasticity, the equations describing the deformation of an elastic body subject only to surface forces (or body forces that could be expressed as potentials) on the boundary are (using index notation) the equilibrium equation: , =

  7. Frenet–Serret formulas - Wikipedia

    en.wikipedia.org/wiki/Frenet–Serret_formulas

    The arc length parameterization of the curve was defined via integration of the Frenet–Serret equations. The Frenet–Serret apparatus allows one to define certain optimal ribbons and tubes centered around a curve. These have diverse applications in materials science and elasticity theory, [7] as well as to computer graphics. [8]

  8. Intrinsic equation - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_equation

    The Cesàro equation is obtained as a relation between arc length and curvature. The equation of a circle (including a line) for example is given by the equation κ ( s ) = 1 r {\displaystyle \kappa (s)={\tfrac {1}{r}}} where s {\displaystyle s} is the arc length, κ {\displaystyle \kappa } the curvature and r {\displaystyle r} the radius of ...

  9. Michell solution - Wikipedia

    en.wikipedia.org/wiki/Michell_solution

    In continuum mechanics, the Michell solution is a general solution to the elasticity equations in polar coordinates (,) developed by John Henry Michell in 1899. [1] The solution is such that the stress components are in the form of a Fourier series in θ {\displaystyle \theta } .

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