central difference operator

central difference operator

[¦sen·trəl ¦dif·rəns ′äp·ə‚rād·ər]
(mathematics)
A difference operator, denoted ∂, defined by the equation ∂ƒ(x) = ƒ(x + h /2) - ƒ(x-h /2), where h is a constant denoting the difference between successive points of interpolation or calculation.
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