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    Finite Difference

    Definition

    The finite difference is the discrete analog of the derivative. The finite forward difference of a function f_p is defined as Δ f_p congruent f_(p + 1) - f_p, and the finite backward difference as del f_p congruent f_p - f_(p - 1). The forward finite difference is implemented in the Wolfram Language as DifferenceDelta[f, i].

    Related Wolfram Language symbol

    DifferenceDelta

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