反比例函数是我们在数学中学过的一种函数.其实,在物理计算中,也会经常用到有关反比例函数的知识.为帮助同学们掌握和运用,现以2006年部分省市的中考题为例说明如下.一、近视眼镜镜片的焦距问题 The inverse-proportional function is a function that we have learned in mathematics. In fact, in the physical calculation, we often use the knowledge of the inverse-proportional function. To help the students master and use it, the examination questions for some provinces and cities in 2006 are entitled Examples are as follows. I. Focal length of myopic eyeglass lenses