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严格按照数学概念的内在要求实施推理和运算,是体现数学严谨性的重要方面。1问题的提出人教A版《数学》(选修2-1)“2.2.1椭圆及其标准方程”在推导椭圆的标准方程时采用了两次“两边平方”的方法。
In strict accordance with the inherent requirements of the mathematical concept of reasoning and computing, is an important aspect of mathematical rigor. 1 PROBLEM TUTORIAL TEACHING Version A “Mathematics” (Elective 2-1) “2.2.1 Ellipses and Standard Equations ” Twice the square of the two sides is used in deriving the standard equations of an ellipse.
