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Meshless Local Petrov-Galerkin Mixed Collocation Steady-State Heat Transfer
Meshless Local Petrov-Galerkin Mixed Collocation Steady-State Heat Transfer

... and other physical, chemical & biological sciences have experienced an intense development in the past several decades. Tremendous efforts have been devoted to solving the so-called direct problems, where the boundary conditions are generally of the Dirichlet, Neumann, or Robin type. Existence, uniq ...
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user guide - Ruhr-Universität Bochum
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Algebra 1 Unit 3: Systems of Equations

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Numerical analysis meets number theory
Numerical analysis meets number theory

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Determining the Number of Polynomial Integrals
Determining the Number of Polynomial Integrals

... The coefficients are determined be the metric and its derivatives. The unknowns are the unknown functions (K i1 ,...,id in the integral I = K i1 ,...,id pi1 · · · pid ) and their derivatives Derivatives are taken of this system of equations w.r.t. all coordinates, and the newly obtained equations ar ...
CRANK-NICOLSON FINITE DIFFERENCE METHOD FOR SOLVING
CRANK-NICOLSON FINITE DIFFERENCE METHOD FOR SOLVING

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Root Finding
Root Finding

... containing x∗ , and if f " (x∗ ) "= 0. So, x∗ = 0 is a simple root of f (x) = x and f (x) = ln (x + 1) (choose the open interval to be (− 21 , 12 )). But, x∗ = 0 is not√a simple root of f (x) = xn , n > 1 because f " (0) = 0 Also, x∗ = 0 is not a simple root of f (x) = x because there is no open int ...
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Root-finding algorithm

A root-finding algorithm is a numerical method, or algorithm, for finding a value x such that f(x) = 0, for a given function f. Such an x is called a root of the function f.This article is concerned with finding scalar, real or complex roots, approximated as floating point numbers. Finding integer roots or exact algebraic roots are separate problems, whose algorithms have little in common with those discussed here. (See: Diophantine equation for integer roots)Finding a root of f(x) − g(x) = 0 is the same as solving the equation f(x) = g(x). Here, x is called the unknown in the equation. Conversely, any equation can take the canonical form f(x) = 0, so equation solving is the same thing as computing (or finding) a root of a function.Numerical root-finding methods use iteration, producing a sequence of numbers that hopefully converge towards a limit, which is a root. The first values of this series are initial guesses. Many methods computes subsequent values by evaluating an auxiliary function on the preceding values. The limit is thus a fixed point of the auxiliary function, which is chosen for having the roots of the original equation as fixed points.The behaviour of root-finding algorithms is studied in numerical analysis. Algorithms perform best when they take advantage of known characteristics of the given function. Thus an algorithm to find isolated real roots of a low-degree polynomial in one variable may bear little resemblance to an algorithm for complex roots of a ""black-box"" function which is not even known to be differentiable. Questions include ability to separate close roots, robustness against failures of continuity and differentiability, reliability despite inevitable numerical errors, and rate of convergence.
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