论文部分内容阅读
解题时应时刻明确解题的最终目的是什么?能否运用各种手段直接达到目的?要尽量避免盲目推演而造成无益的循环运算。“设而不求”是解决这个问题的一个好方法。所谓设而不求,就是指在解题过程中根据需要设出变量,但是并不具体的去直接解出变量的值。它给解这一类题提供了较好的切入点和较少的运算量,不失为一好法。那么是什么原因导致设了未知数之后却不必要求出来呢?分析一下计算的过程,笔者发现所求的问题
Problem-solving should always be the ultimate purpose of solving the problem is? Can use various means to achieve the goal directly? Try to avoid blind deduction caused by the cycle of useless computing. “Set without seeking ” is a good way to solve this problem. The so-called set not seek, refers to the problem-solving process in accordance with the need to set variables, but not specific to directly solve the variable values. It solves this kind of problem provides a better entry point and less computation, after all, a good method. So what is the reason behind the unknowns but not necessarily required? Analysis of the calculation process, I found that the problem