逆向思维是一种创造性思维,在解决某些数学难题、竞赛题时有着出奇制胜的功效。逆向思维与通常的思维程序相反,它不是依照事物产生的原因或条件去推知判断结果,而是从其相反的方向展开思路,换个角度分析问题,探求否定方面,从而得出结论。在解数学题时,按照常规思路或模式分析解决问题,固然重要,然而有时候巧用逆向思维作些尝 Reverse thinking is a creative thinking, in solving some math problems, competitions have surprisingly winning effect. Contrary to the usual thinking process, reverse thinking is not based on the causes or conditions of things to infer the judgment results, but from the opposite direction to start thinking, analyze the problem from another perspective, to explore the negative aspects, and draw conclusions. While solving math problems, it is important to analyze and solve the problems according to the usual way of thinking or mode. However, sometimes it is wise to use reverse thinking for some taste