阅读材料分式问题选析

• 作 者: 罗自成 安义人
• 机 构: 江西省上高县四中,
• 出 处: 中学生数理化(八年级数学)(配合人教社教材)
• 发表日期: 2016年12期

阅读材料分式问题,在近年的中考中屡见不鲜.解答它们,应认真阅读所给出的材料,了解和掌握“阅读材料”提供给我们的信息,然后再利用这些信息.例1(2014年·黄石)观察下列等式:第一个等式:a_1=3/(1×2×2~2)=1/(1×2)-1/(2×2~2);第2个等式:a_2=4/(2×3×2)3)=1/(2×2~2)-1/(3×2~3);

Reading material fractional problems, common in recent years in the senior high school entrance examination. Answer them, should carefully read the material given, to understand and master “reading material ” to provide us with the information, and then use this information .Example 1 (2014 Year Yellowstone observes the following equation: The first equation: a_1 = 3 / (1 × 2 × 2 ~ 2) = 1 / (1 × 2) -1 / (2 × 2 ~ 2) A 2 = 4 / (2 × 3 × 2) 3) = 1 / (2 × 2 ~ 2) -1 / (3 × 2 ~ 3)