On the existence of a tangent to an arc parallel to the line through its endpoints
For the theorem in harmonic function theory, see Harmonic function § The mean value property.
In mathematics, the mean value theorem (or Lagrange theorem) states, roughly, that for a given planar arc between two endpoints, there is at least one point at which the tangent to the arc is parallel to the secant through its endpoints. It is one of the most important results in real analysis. This theorem is used to prove statements about a function on an interval starting from local hypotheses about derivatives at points of the interval.
More precisely, the theorem states that if is a continuous function on the closed interval and differentiable on the open interval , then there exists a point in such that the tangent at is parallel to the secant line through the endpoints and , that is,
and 21 Related for: Mean value theorem information
In mathematics, the meanvaluetheorem (or Lagrange theorem) states, roughly, that for a given planar arc between two endpoints, there is at least one...
from a constant value which depends on where one starts to compute area. The first part of the theorem, the first fundamental theorem of calculus, states...
formula Cauchy's meanvaluetheorem in real analysis, an extended form of the meanvaluetheorem Cauchy's theorem (group theory) Cauchy's theorem (geometry)...
rod. The meanvaluetheorem gives a relationship between values of the derivative and values of the original function. If f(x) is a real-valued function...
valuetheorem states that if f {\displaystyle f} is a continuous function whose domain contains the interval [a, b], then it takes on any given value...
necessarily has value 0) at an isolated zero of f ( z ) {\displaystyle f(z)} . Another proof works by using Gauss's meanvaluetheorem to "force" all points...
averages Meanvaluetheorem Moment (mathematics) Summary statistics Taylor's law Pronounced "x bar". Greek letter μ, for "mean", pronounced /'mjuː/. "Mean |...
\over (t+x)\,(t+y)}.} One can generalize the mean to n + 1 variables by considering the meanvaluetheorem for divided differences for the n-th derivative...
arithmetic mean of the left and right derivatives at that point, if the latter two both exist.: 6 Neither Rolle's theorem nor the mean-valuetheorem hold for...
is a consequence of the Hahn-Banach theorem and generalizes the meanvaluetheorem for integrals of real-valued functions: If V = R {\displaystyle V=\mathbb...
|}_{a}^{b}={\bar {f}}b-{\bar {f}}a=(b-a){\bar {f}}.} See also the first meanvaluetheorem for integration, which guarantees that if f {\displaystyle f} is continuous...
Conversely, instead of using the generalized meanvaluetheorem in the second proof, the classical meanvaluedtheorem could be used. The properties of repeated...
convergence theorem and the meanvaluetheorem (details below). We first prove the case of constant limits of integration a and b. We use Fubini's theorem to change...
s_{i}\to 0}\sum _{i=1}^{n}f(\mathbf {r} (t_{i}))\,\Delta s_{i}.} By the meanvaluetheorem, the distance between subsequent points on the curve, is Δ s i = |...
which is obtained from the meanvaluetheorem by equating the function values at the endpoints. Corollary Fundamental theorem Lemma (mathematics) Toy model...
}(0)=I} , so that a = b = 0 {\displaystyle a=b=0} . By the meanvaluetheorem for vector-valued functions, for a function u : [ 0 , 1 ] → R m {\displaystyle...
meromorphic, the Sokhotski–Plemelj theorem relates the principal value of the integral over C with the mean-value of the integrals with the contour displaced...
data. The RMS value of a set of values (or a continuous-time waveform) is the square root of the arithmetic mean of the squares of the values, or the square...
including the meanvaluetheorem (over geodesic balls), the maximum principle, and the Harnack inequality. With the exception of the meanvaluetheorem, these...
continuous and invertible function. It follows from the intermediate valuetheorem that f {\displaystyle f} is strictly monotone. Consequently, f {\displaystyle...