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.
求由参数方程所确定的函数的高阶导数，提出了一种较为直观、简便的逐次求导方法。
Author presented a concise gradual derivation about higher derivative whose function defined by parametric equation.
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