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分析2012年中考数学题,频频出现考查相似在实际中的应用题型,下面举例说明,供学习时参考.一、跷跷板问题例1(2012年烟台)如图1是跷跷板示意图,横板AB绕中点O上下转动,立柱OC与地面垂直,设B点的最大高度为h_1若将横板AB换成横板A’B’,且A’B’=2AB,O仍为A’B’的中点,设B’点的最大高度为h_1,则下列结论
Analysis of the 2012 senior high school entrance examination math problems, frequently appeared to examine the similar in the practical application of the type, the following example for reference when learning. First, the seesaw problem Example 1 (2012 Yantai) Figure 1 is a seesaw schematic horizontal AB around Midpoint O up and down rotation, column OC perpendicular to the ground, set the maximum height of B point h_1 if the horizontal plate AB is replaced by horizontal plate A’B ’, and A’B’ = 2AB, O is still A’B ’ Midpoint, set the maximum height of B ’point h_1, the following conclusions