由于准则方程的高次非线性和复杂性，文中利用复合函数求导法则，直接针对基本随机变量求解。
Because of the complexity and high order nonlinear property of the criterion, a derivative method for compound function is used to get reliability.
对多元抽象复合函数的高阶求导进行了讨论，利用代换的思想，得到了对其进行高阶求导的简便易行的方法。
This paper is to discuss the higher-order derivative of many-variables abstract composite function, and to put forward the easy method to this type of questions through substitution.
利用复合函数的求导规则和级数理论能够得出 贝努利数的简明公式■ ，在理论和应用上都具有重要的价值。
There is a simple formula of Bernoulli number with using extraction a derivative rule of compound function and progression theory and so a given important value in the theory and application.
利用复合函数的求导规则和级数理论能够得出 贝努利数的简明公式■ ，在理论和应用上都具有重要的价值。
There is a simple formula of Bernoulli number with using extraction a derivative rule of compound function and progression theory and so a given important value in the theory and application.
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