finite difference

(redirected from Central difference approximation)
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finite difference

[¦fī‚nīt ′dif·rəns]
(mathematics)
The difference between the values of a function at two discrete points, used to approximate the derivative of the function.
References in periodicals archive ?
At the boundary surfaces, by applying the central difference approximation to the boundary conditions, relations were developed for the fictitious nodes in Eq 1.

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