The derivative was solves the function maximum value, the minimal problem powerful tool, the derivative knowledge has formed a discipline, was the calculus which the people usually said.
导数是解决函数的最大值，最小值问题的有力工具，导数的知识形成了一门学科，就是人们通常所说的微积分。
The derivative was solves the function maximum value, the minimal problem powerful tool, the derivative knowledge has formed a discipline, was the calculus which the people usually said.
导数是解决函数的最大值，最小值问题的有力工具，导数的知识形成了一门学科，就是人们通常所说的微积分。
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