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

单词	central difference
释义	central difference Mathematics If {(x_i, f_i)}, i = 0, 1, 2,…is a given set of function values with x_i + 1 = x_i + h, f_i = f(x_i) then the central difference at f_i is defined by $\frac{f_{i + 1} - f_{i - 1}}{2} = \frac{f (x_{i + 1}) - f (x_{i - 1})}{2} .$
随便看	SAW filter sawfly sawhorse projection sawing sawtooth oscillator sawtooth pulse sawtooth waveform SAX Saxe, Maurice, Comte de (1696–1750) saxifrage Saxonian Saxons SAXS Saybolt viscometer Saytsev’s rule Sayyid dynasty Say’s law S band S-band s-block elements SBR sc SCA scabious SCADA

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