摘要函数极值是应用数学解决实际问题的一个重要方面。
The function extreme value is an important aspect that applied maths solves the practical problem.
判别函数极值的方法是数学分析中的重要组成部分。
Extreme function analysis of the mathematical method is the important component.
定理1设函数在处可导，且在处取得极值，那么。
Theorem 1 if is differentiable at, and is a local extreme value of, then.
定理1设函数在处可导，且在处取得极值，那么。
Theorem 1 if is differentiable at, and is a local extreme value of, then.
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