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线段的最值问题是近几年中考的一类热点问题,往往结合动点的对称,动点的轨迹出现,而直角三角形的斜边大于直角边(本文简称“斜大于垂”),是解决这类问题的关键.本文从巧用“斜大于垂”解一类(动点对称)线段和的最值问题和“斜大于垂”解一类(动点轨迹)求线段最值问题,来进行研究,强化转化的数学思想方法在解题中的运用.
The most value problem of the line segment is a kind of hot issue in the middle school entrance examination in recent years. It is often combined with the symmetry of the moving point and the locus of the moving point. The hypotenuse of the right triangle is larger than the right-angle edge Is the key to solve this kind of problem.This article from the use of “oblique greater than hanging ” solution of a class of (moving point symmetry) line and the most value problem and Line of the most value problems, to carry out research, strengthen the transformation of mathematical thinking in the use of problem-solving.