单词 | backward difference operator |
释义 | backward difference operator [¦bak·wǝrd ¦dif·rǝns `äp·ǝ´rād·ǝr] MATHEMATICS A difference operator, denoted ∇, defined by the equation ∇ƒ (x ) = ƒ (x ) - ƒ (x - h ), where h is a constant denoting the difference between successive points of interpolation or calculation. |
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