[求助]有关绘包络线及计算面积的问题

dian9

<>已知，xy坐标系中一组点的坐标</P>
<>求出并显示出这组点的包络线，并求包络线所围的面积</P>
<>请问各位达人这个怎么实现？</P>
<P>附上示意图</P><img src="attachments/dvbbs/2005-6/200565214913771.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-6/200565214913771.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

bright

<>呵呵，这是算法（嗯应当说是计算）的问题呀，程序没什么技术含量呀</P>[em06]

dian9

<>对呀</P><>就是问怎么计算</P>[em04]

dian9

<>Analyze中的数学工具里是否有关于这个的？</P>

tianljbox

呵呵，好像高等数学里面有吧，翻翻书看看了