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解数学问题时,常规的思考方法是由条件到结论的定向思考,但有些问题用常规的思维方式来寻求解题途径却比较困难,甚至无从着手,在这种情况下,换一个角度去思考从而找到一条绕过障碍的新途径.构造法就是这样的手段之一.构造辅助元素,它可以是一个式、一个方程、一个函数、一个向量、一个数列等,架起一座连接条件和结论的桥梁,从而使问题得以解决,这种解题的数学方法,称为构造法.用构造法解题时,被构造的对象是多种多样的,没有固定的程序和模式,不可生搬硬
When solving mathematical problems, the conventional way of thinking is to think in terms of conditions and conclusions. However, it is difficult or even impossible to find solutions to some problems in the conventional way of thinking. In this case, we can think from another perspective So as to find a new way to get around the obstacle.Construction method is one of the ways to construct auxiliary elements, which can be a formula, an equation, a function, a vector, a sequence, etc., set up a connection conditions and conclusions Bridge, so that the problem can be solved, this problem-solving mathematical method, known as the construction method. Construction method to solve the problem, the object is constructed by a variety of, there is no fixed procedures and models,