<P>1、单一可变投入：</P>
<P><img src="http://pic.pinggu.com/attachments/uploadfile_20082009/2004-6/20046221515531.jpg" border="0" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" /></P>
<P>注意前提：产品市场和要素市场均完全竞争</P>
<P>2、两可变投入：
<img src="http://pic.pinggu.com/attachments/uploadfile_20082009/2004-6/20046221525873.jpg" border="0" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" /></P>
<P>注意前提：资本与劳动互补
<img src="http://pic.pinggu.com/attachments/uploadfile_20082009/2004-6/200462215210431.jpg" border="0" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" /></P>
<P>本图中VMPL的变动请回忆：MPL/hL = MPK/hK（来自厂商生产决策）</P>