“central difference approximation”的概念、定义、翻译、参考文献-科学参考

单词	central difference approximation
释义	central difference approximation Mathematics The central difference approximation for the derivative of a function f(x) uses the gradient of the chord joining the two points whose x values are a small amount h from the value x₀, giving $f ’ (x_{0}) \approx \frac{f (x_{0} + h) - f (x_{0} - h)}{2 h} .$
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