1 Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:10.0.2) Gecko/20100101 Firefox/10.0.2 /rde/contents/library/ps2img/cgi-bin/eqn2gif.cgi 157.118.3.12 1330667420 2012/03/02 14:50:20 =\frac{n\sum_{i=1}^{n}x_{i}y_{_i}-\sum_{i=1}^{n}x_{i}\sum_{i=1}^{n}y_{i}}{n\sum_{i=1}^{n}x_{i}^{2}-\left(\right\sum_{i=1}^{n}x_{i} )^{2}} _________LaTeX__________________ 8 ______(________________________) [画像は表示できません] ______ エラーがありました ! Missing delimiter (. inserted). <to be read again> \sum l.18 ...{2}-\left(\right\sum_{i=1}^{n}x_{i} )^{2}} % ? ! Emergency stop. <to be read again> \sum l.18 ...{2}-\left(\right\sum_{i=1}^{n}x_{i} )^{2}} % 20120302_144755 http://www.mech.tohoku-gakuin.ac.jp/rde/contents/library/ps2img/eqn2gif_online.html Fri Mar 2 14:50:20 2012