倒数差分与均差密切相关。 前几个由以下公式显式给出
![rho(x_0,x_1)=(x_0-x_1)/(f_0-f_1)](/images/equations/ReciprocalDifference/NumberedEquation1.svg) |
(1)
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![rho_2(x_0,x_1,x_2)=(x_0-x_2)/(rho(x_0,x_1)-rho(x_1,x_2))+f_1](/images/equations/ReciprocalDifference/NumberedEquation2.svg) |
(2)
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![rho_3(x_0,x_1,x_2,x_3)=(x_0-x_3)/(rho_2(x_0,x_1,x_2)-rho_2(x_1,x_2,x_3))+rho(x_1,x_2)](/images/equations/ReciprocalDifference/NumberedEquation3.svg) |
(3)
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![rho_n(x_0,x_1,...,x_n)
=(x_0-x_n)/(rho_(n-1)(x_0,...,x_(n-1))-rho_(n-1)(x_1,...,x_n))+rho_(n-2)(x_1,...,x_(n-1)).](/images/equations/ReciprocalDifference/NumberedEquation4.svg) |
(4)
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另请参阅
后向差分,
中心差分,
均差,
有限差分,
前向差分
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参考文献
Abramowitz, M. 和 Stegun, I. A. (编). Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, p. 878, 1972.Beyer, W. H. (编). CRC Standard Mathematical Tables, 28th ed. Boca Raton, FL: CRC Press, p. 443, 1987.在 Wolfram|Alpha 中被引用
倒数差分
请这样引用
Weisstein, Eric W. “倒数差分。” 来自 MathWorld--Wolfram Web 资源。 https://mathworld.net.cn/ReciprocalDifference.html
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