名词
中文翻译：反证法规则
同义词：
['inverse theorem', 'contrapositive proof', 'inversion theorem']
例句：
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1. In mathematics, the contrapositive rule is a useful tool for solving equations.
在数学中，反证法规则是解决方程的一种有用的工具。
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2. The teacher explained the concept of the contrapositive rule to the students.
老师向学生们解释了反证法的概念。
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3.By using the contrapositive rule, we can simplify the problem and find the solution more easily.
通过使用反证法规则，我们可以简化问题并更容易地找到解决方案。