在初中物理试题中,常需要确定某些量的取值范围或峰值,若使用常规物理思路,不仅费时费力,而且有时难以理解,给学生“山重水复疑无路”之感。而灵活运用不等式处理此类试题,可起到化繁为简、准确判断的效果,使学生获得“柳暗花明又一村”的成功愉悦。下面结合几道中考试题举例说明不等式在求解此类物理题中的优越性。 In the junior high school physics test, often need to determine the value of some of the range or peak value, if the use of conventional physical thinking, not only time-consuming and laborious, and sometimes difficult to understand, to the students . The flexible use of inequalities to deal with such questions, can play a simplistic, accurate judgment of the effect, so that students get “brilliant” success and delight. The following combination of several middle school exam questions illustrate the advantages of inequality in solving such physics problems.