刚才打错题了...抱歉
来源:学生作业帮 编辑:灵鹊做题网作业帮 分类:数学作业 时间:2024/06/17 06:11:17
已知过点P(1,-2),倾斜角为
的直线l和抛物线X2 =y+m (1)m取何值时,直线l和抛物线交于两点? (要详细过程)
![](http://img.wesiedu.com/upload/1/cd/1cd9c6e6e3f89188198a37052732ced5.gif)
![刚才打错题了...抱歉](/uploads/image/z/1207611-27-1.jpg?t=%E5%88%9A%E6%89%8D%E6%89%93%E9%94%99%E9%A2%98%E4%BA%86...%E6%8A%B1%E6%AD%89)
解题思路: 联立方程组,据“德尔塔>0 ” 列不等式,解之。
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=385383")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=385383")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略