Math Problem Statement
命題「x<2ならばx^2<4」の真偽を述べよ、また真であるときは証明し、偽であるときは反例を1つあげよ。
Solution
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Math Problem Analysis
Mathematical Concepts
Inequalities
Quadratic Functions
Formulas
x^2 - 4 < 0
Factoring: (x - 2)(x + 2)
Theorems
Properties of inequalities
Zero product property
Suitable Grade Level
Grades 9-12