二元判定等同于一位信息。
This binary decision is equivalent to one bit of information.
如果一个目标对于扫描器是新的威胁，正确的分析结论并不是依靠一个简单的二元判定。
If the target malware is new to the scanner, the accuracy of the analyzer output is not dependent on a simple binary decision.
以中值定理为工具，给出了利用一阶偏导数判定二元函数极值的方法。
The criterion extreme value of binary function for first partial derivative is given by means of the mean value theorem. The two theorems are obtained.
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