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  2. Taylor series - Wikipedia

    en.wikipedia.org/wiki/Taylor_series

    For these functions the Taylor series do not converge if x is far from b. That is, the Taylor series diverges at x if the distance between x and b is larger than the radius of convergence. The Taylor series can be used to calculate the value of an entire function at every point, if the value of the function, and of all of its derivatives, are ...

  3. Taylor's theorem - Wikipedia

    en.wikipedia.org/wiki/Taylor's_theorem

    v. t. e. In calculus, Taylor's theorem gives an approximation of a -times differentiable function around a given point by a polynomial of degree , called the -th-order Taylor polynomial. For a smooth function, the Taylor polynomial is the truncation at the order of the Taylor series of the function.

  4. Arctangent series - Wikipedia

    en.wikipedia.org/wiki/Arctangent_series

    Arctangent series. In mathematics, the arctangent series, traditionally called Gregory's series, is the Taylor series expansion at the origin of the arctangent function: [ 1] This series converges in the complex disk except for (where ).

  5. Difference engine - Wikipedia

    en.wikipedia.org/wiki/Difference_engine

    The initial values can be calculated to any degree of accuracy; if done correctly the engine will give exact results for first N steps. After that, the engine will only give an approximation of the function. The Taylor series expresses the function as a sum obtained from its derivatives at one point.

  6. Radius of convergence - Wikipedia

    en.wikipedia.org/wiki/Radius_of_convergence

    Radius of convergence. In mathematics, the radius of convergence of a power series is the radius of the largest disk at the center of the series in which the series converges. It is either a non-negative real number or . When it is positive, the power series converges absolutely and uniformly on compact sets inside the open disk of radius equal ...

  7. Hamiltonian simulation - Wikipedia

    en.wikipedia.org/wiki/Hamiltonian_simulation

    Hamiltonian simulation (also referred to as quantum simulation) is a problem in quantum information science that attempts to find the computational complexity and quantum algorithms needed for simulating quantum systems. Hamiltonian simulation is a problem that demands algorithms which implement the evolution of a quantum state efficiently.

  8. Machin-like formula - Wikipedia

    en.wikipedia.org/wiki/Machin-like_formula

    Machin-like formula. In mathematics, Machin-like formulas are a popular technique for computing π (the ratio of the circumference to the diameter of a circle) to a large number of digits. They are generalizations of John Machin 's formula from 1706: which he used to compute π to 100 decimal places. [ 1][ 2] Machin-like formulas have the form.

  9. Delta method - Wikipedia

    en.wikipedia.org/wiki/Delta_method

    Delta method. In statistics, the delta method is a method of deriving the asymptotic distribution of a random variable. It is applicable when the random variable being considered can be defined as a differentiable function of a random variable which is asymptotically Gaussian .