数式：\bigsum_{x=0}^{10}{x+1}


            <a href="http://exp.frozenlib.net/query?exp=%5cbigsum_%7bx%3d0%7d%5e%7b10%7d%7bx%2b1%7d"><img src="http://exp.frozenlib.net/image?exp=%5cbigsum_%7bx%3d0%7d%5e%7b10%7d%7bx%2b1%7d&amp;size=7&amp;textcolor=000000FF&amp;backcolor=FFFFFFFF" alt="\bigsum_{x=0}^{10}{x+1}" style="border:none;" /></a>

$\bigsum_{x=0}^{10}{x+1}$

画像貼り付け用HTML