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解数学题的关键在于思维起点的选择,一道数学题引发的思维是多向的,当思维起点选择合理准确时,解题就得心应手;当解题遇到麻烦时,就可能是思维起点选择错了.那么如何选择合理的思维起点呢? 一、以基本概念、法则、公式为思维起点 数学问题大多以概念、法则、公式的应用、变形为基础来设计的,通过对问题的分析,联想其相应的概念、法则、公式往往容易开启思维之门. 例 1 已知 ,求证:
The key to solving mathematics problems lies in the choice of thinking starting point. The thinking triggered by a mathematics problem is multi-directional. When the starting point of thinking is reasonable and accurate, the problem-solving is handy. When the solving problem is in trouble, it may be the starting point of thinking. So how to choose a reasonable starting point of thinking? First, the basic concept, rules, formulas as the starting point of thinking Mathematical problems are mostly based on the application of concept, rules, formulas, deformation based on the design, through the analysis of the problem, associate with The corresponding concepts, rules, and formulas tend to open the door to thinking. Example 1 Known and proven: