略论设而不求与整体消元的解题策略

On the method of "not set up" and total elimination

通过圆锥曲线讲解设而不求与整体消元的解题方法,并利用这种方法归纳弦中点轨迹、中点弦所在直线的规律,给出了解决弦中点轨迹方程、中点弦所在直线方程的方法.

By explaining the method of conic ＂not set up ＂ and total elimination and concluding the law of the straight-line where the mid-point trajectory and the mid-point sting are in, this paper demonstrates the method of solving the track equation where the strings of the mid-point trajectory and the mid-point strings are in.