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思维是人类理性认识的过程.根据思维过程的指向性,可将思维过程分为:正向性思维和逆向性思维.在数学解题中,通常是从已知到结论的正向性思维方式,然而有些中考题按照这种思维方式求解比较困难,而且常常伴随着较大的运算量,过程十分烦杂,不易找到解题的突破口,有时甚至无法解决.在此,我们不妨试试逆向思维,注意定义、定理、公式、解题条件、
Thinking is the process of human rational cognition.According to the orientation of the thinking process, the thinking process can be divided into: forward thinking and reverse thinking.In the mathematical problem solving, usually from the known to the conclusions of the forward thinking mode , But some of the exam questions in accordance with this way of thinking to solve more difficult, and often accompanied by a large amount of computation, the process is very complicated, not easy to find a solution to the problem of breakthrough, and sometimes can not be resolved.We can try reverse thinking here, Attention to the definition, theorem, formula, problem-solving conditions,