投稿
收錄了5篇文章 · 5人關(guān)注
-
-
表征模式12:與焦半徑相關(guān)(最值問題)用結(jié)論(3)可以減少運算量
-
-
-
表征模式12:已知焦點三角形兩底角求離心率(二級結(jié)論)也可用這個二級結(jié)論:
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1881139527',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://upload.jianshu.io/collections/images/1856496/crop1581937506729.jpg', '推薦專題《圓錐曲線二級結(jié)論題》（ 分享自 @簡書 ）','http://www.itdecent.cn/c/587882d20c85?utm_campaign=maleskine&utm_content=collection&utm_medium=reader_share&utm_source=weibo','頁面編碼gb2312|utf-8默認gb2312'));){kind=link}