本文试图就如何利用数形结合的思想方法来解决一类圆锥曲线的最值问题做一点探讨和归纳.引例如图1,已知F1、F2为直线l的同侧的两定点,试在直线l上找一点M,使|MF1|+|MF2|有最小值.F1P MM0F2l图1%解如图1,过点F1作点F1的关于直线l的对称点P,连结F2P交直线l于点M0,则点M0即为所求(易证之,略).若将上述问题中的直线改为二次曲线, In this paper, we try to discuss and summarize how to solve the most value problem of a kind of conic curve by using the method of numerical combination. For example, in Figure 1, F1 and F2 are two fixed points on the same side of a straight line l, F1P MM0F2l Figure 1% Solution As shown in Figure 1, the point F1 for the F1 point on the symmetry point of the straight line P, Link F2P intersecting line l at the point M0, then the point M0 is seeking (easy to prove, omitted). If the above questions in the straight line to a quadratic curve,