椭圆、双曲线、抛物线的最值问题的解题方法较灵活,同学们时常感到无从下手。对于经常遇到的面积最大最小问题,距离的最长最短问题,不定量的最大最小问题等,下面给同学们提供两种解法,只要掌握了它们,就可以“最”有应得。一、几何法求最值例1抛物线y=-x~2上的点到直线4x+3y-8=0的距离的最小值是()。 Ellipse, hyperbolic, parabolic problems of the most value-solving methods more flexible, students often feel unable to start. For frequently encountered area of ​​the minimum and maximum problems, the longest distance and shortest problems, the maximum and minimum quantitative problems, the following provides students with two solutions, as long as they are, you can “most ” deserved. First, the geometric method to find the value of the most cases 1 parabola y = -x ~ 2 point to the line 4x + 3y-8 = 0 minimum distance is ().