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在解决数学问题时,经常会涉及较多的量,并且量与量之间的关系不太明显,此时可以设一些辅助元(参数),将那些不明显的数量关系表示出来,然后在解题过程中巧妙地消去辅助元(参数),而不必求出这些辅助元(参数)的值(有时也求不出),以使解题过程优化,解题方法简捷,这就是我们通常所说的“设而不求”.说简单点,就是设了参数,但并不求出其具体值,而是在运算过程中被消掉,参数起到了“桥梁”过渡作用.本文通过几道实例谈谈如何在三
In solving mathematical problems, often involving more than one, and the relationship between quantity and quantity is not obvious, then you can set up some auxiliary elements (parameters), the number of those who are not obvious that the relationship between the number, and then in the solution Problem subtly eliminate auxiliary elements (parameters), without having to figure out the value of these auxiliary elements (parameters) (sometimes not), so that the problem solving process optimization problem-solving method is simple, which is what we usually say The simple point is to set the parameters, but does not calculate its specific value, but is eliminated in the process of operation, the parameters play a “bridge” transition. Through several examples to talk about how in three