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选择题是初中数学中的一类重要题型.虽然一般试卷中的数量不多,但是此题型考察内容宽泛,能力要求全面,方法丰富多样,其解题策略还是值得研究的.近年来随着选择题难度的增加,只有掌握了正确的解题技巧和解题方法,才能在尽可能短的时间里,正确地完成选择题.本文仅以一道题目为例,介绍从不同角度思考的不同方法.题目已知反比例函数y=3x(x>0)的图象经过点(m,y1)、(m+1,y2)、(m+2,
The multiple-choice questions are an important type of questions in junior high school mathematics.Although there are not many papers in the general examination papers, but the content of the questions is extensive, the ability requirements are comprehensive, the method is rich and varied, and its problem-solving strategy is still worth studying. With the increasing difficulty of multiple-choice questions, only in the correct grasp of the problem-solving skills and problem-solving methods, in the shortest time possible to complete the multiple-choice questions.This article only one case, for example, introduces different from different perspectives Method The problem is known that the image of the inverse proportion function y = 3x (x> 0) passes through points (m, y1), (m + 1, y2),