This paper studies derivatives of higher order about product of three functions, and obtains a group dependent derivative formulas.
研究了三个函数乘积的高阶导数，得到了一组相应的导数公式。
This paper studies derivatives of higher order about product of three functions, and obtains a group dependent derivative formulas.
研究了三个函数乘积的高阶导数，得到了一组相应的导数公式。
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