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  2. Particular values of the Riemann zeta function - Wikipedia

    en.wikipedia.org/wiki/Particular_values_of_the...

    The zeta function values listed below include function values at the negative even numbers (s = −2, −4, etc.), for which ζ(s) = 0 and which make up the so-called trivial zeros. The Riemann zeta function article includes a colour plot illustrating how the function varies over a continuous rectangular region of the complex plane.

  3. Calculus of functors - Wikipedia

    en.wikipedia.org/wiki/Calculus_of_functors

    In the calculus of functors method, the sequence of approximations consists of (1) functors ,,, and so on, as well as (2) natural transformations: for each integer k. These natural transforms are required to be compatible, meaning that the composition F → T k + 1 F → T k F {\displaystyle F\to T_{k+1}F\to T_{k}F} equals the map F → T k F ...

  4. Fundamental lemma of the calculus of variations - Wikipedia

    en.wikipedia.org/wiki/Fundamental_lemma_of_the...

    for all compactly supported smooth functions h on (a,b), then g is differentiable, and g' = f everywhere. [4] [5] The special case for g = 0 is just the basic version. Here is the special case for f = 0 (often sufficient). If a continuous function g on an interval (a,b) satisfies the equality

  5. Calculus of variations - Wikipedia

    en.wikipedia.org/wiki/Calculus_of_Variations

    Calculus of variations is concerned with variations of functionals, which are small changes in the functional's value due to small changes in the function that is its argument. The first variation [l] is defined as the linear part of the change in the functional, and the second variation [m] is defined as the quadratic part. [22]

  6. Calculus - Wikipedia

    en.wikipedia.org/wiki/Calculus

    [56]: 37 In analytic geometry, the study of graphs of functions, calculus is used to find high points and low points (maxima and minima), slope, concavity and inflection points. Calculus is also used to find approximate solutions to equations; in practice, it is the standard way to solve differential equations and do root finding in most ...

  7. Mean of a function - Wikipedia

    en.wikipedia.org/wiki/Mean_of_a_function

    In calculus, and especially multivariable calculus, the mean of a function is loosely defined as the average value of the function over its domain. In one variable, the mean of a function f ( x ) over the interval ( a , b ) is defined by: [ 1 ]

  8. Numerical differentiation - Wikipedia

    en.wikipedia.org/wiki/Numerical_differentiation

    In fact, all the finite-difference formulae are ill-conditioned [4] and due to cancellation will produce a value of zero if h is small enough. [5] If too large, the calculation of the slope of the secant line will be more accurately calculated, but the estimate of the slope of the tangent by using the secant could be worse. [6]

  9. Function (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Function_(mathematics)

    On the other hand, if a function's domain is continuous, a table can give the values of the function at specific values of the domain. If an intermediate value is needed, interpolation can be used to estimate the value of the function. For example, a portion of a table for the sine function might be given as follows, with values rounded to 6 ...