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反比例函数是初中数学的重要内容之一,也是每年中考必考知识点。经常遇到将直线和双曲线融为一体,交点与坐标轴上的点(或动点)构成三角形或四边形的综合题。确定解析式、求交点坐标、求三角形或四边形的面积等等是常见问题。我把本部分知识赋诗三首,分享与共,同娱共乐,能有启迪,吾心甚慰。诗中蕴含了题之类型与解题策略。教学中把它呈现给学生,能极大地激发学生的数学兴趣,能使玩童爱上数学。第一部:伤的“双曲线”(双曲线、渐近线、坐标轴)———伤不起,伤不起。双曲线无限靠近渐近线(坐标轴),但是,
Inverse function is an important part of junior high school mathematics, but also the annual test knowledge of the test points. Often encounter the straight line and hyperbolic integration, intersection and coordinate axis (or moving point) to form a triangle or quadrilateral synthesis problem. It is a common problem to determine the parse, find the coordinates of the intersection point, find the area of the triangle or quadrilateral, and so on. I put this part of the knowledge of poetry three, to share with the total, together with the fun, can inspire, my heart comfort. The poem contains the title of the type and problem solving strategy. Teaching it to students, it can greatly stimulate students’ interest in mathematics, make the children fall in love with mathematics. Part 1: Wounded “hyperbolic” (hyperbolic, asymptotic, axis) --- can not afford to hurt, can not afford to hurt. Hyperbolic infinitely close to the asymptotic line (axis), however,