论文部分内容阅读
解决与抛物线有关的最值问题,可以从几何角度进行观察、分析,利用抛物线的定义来解决问题;也可以从代数角度入手,建立函数关系,利用求函数最值和值域的有关方法进行求解.常见的抛物线中的最值问题主要有以下几种.问题一、点与抛物线的最值问题例1已知定点M(a,0),试在抛物线y~2=2px(p>0)上求一点N,使得|MN|取值最小.分析:可在抛物线上任取一点
To solve the most parabolic-related problems, we can observe, analyze and use the definition of parabola to solve the problem from a geometrical point of view. We can also start from the algebraic point of view to establish the functional relationship and solve the problem by using the method of finding the most value and the range of the function . The most common problems in the parabola are as follows: Problem 1, the value of the point and the parabola Problem Example 1 Given the fixed point M (a, 0), try the parabola y ~ 2 = 2px (p> 0) Find a point on N, making | MN | the smallest possible value. Analyze: Take a parabola