數(shù)值型函數(shù) abs(x) 絕對值 abs(-9)=9comb(n,k) 從n中取k個的組合 comb(10,2)=45exp(x) 指...
投稿
收錄了-2篇文章 · 14人關(guān)注
數(shù)值型函數(shù) abs(x) 絕對值 abs(-9)=9comb(n,k) 從n中取k個的組合 comb(10,2)=45exp(x) 指...
{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/580392/_%E7%94%B5%E5%BD%B1%E5%A4%A9%E5%A0%82www.dygod.net_.%E9%98%BF%E7%94%98%E6%AD%A3%E4%BC%A0._%E4%B8%AD%E8%8B%B1%E5%8F%8C%E5%AD%97.1024%E5%88%86%E8%BE%A8%E7%8E%87__20161101213112.JPG', '推薦專題《stata》（ 分享自 @簡書 ）','http://www.itdecent.cn/c/6998f0604576?utm_campaign=maleskine&utm_content=collection&utm_medium=reader_share&utm_source=weibo','頁面編碼gb2312|utf-8默認(rèn)gb2312'));){kind=link}