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<title>LaTeX Equation Editor for the Internet</title>
<meta name="robots" CONTENT="nofollow"/>
<meta name="description" content="A web-based LaTeX equation editor that generates graphical gif equations. It also provides HTML code so the equations can be directly embedded into any website, forum or blog. Images may also be used directly within your offline documentation. Open source and XHTML compliant."/>
<meta name="keywords" content="LaTeX, equation editor, open source, equations, mimetex, instantly rendered, preview, free"/>
<style type="text/css">
/* The default text style used on every page */
body {
padding:0;
margin:0;
font-size:12px;
font-family:Arial, Helvetica, sans-serif;
}
p { margin:2px 0; }
.yellowbox
{ width:450px; border:1px solid #dddddd; background-color:#FFFFCC; padding:5px; margin:5px auto; }
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.bottom { border-bottom:1px solid #9a9a9a; }
#toolbar_wrapper { display:relative; width:530px; margin:0px auto; text-align:left; }
#toolbar {
position:absolute;
width: 530px;
padding-top:2px;
background-color:#eeeeee;
}
#toolbar_space { height:36px; width:100%; margin:0 auto; background-color:#eeeeee; border-right:1px solid #9a9a9a; }
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.panel2 { float:left; padding:0px 3px; z-index:10px; height:30px; overflow:hidden; }
#latex_formula
{ height:120px;
/* overflow:hidden; // Use if you also enable autoresize box */
}
#equationcomment { margin:10px; }
#equationview { margin:10px; }
#footer { position:absolute; width:100%; bottom:2px; left:2px; text-align:center; }
form { border:0; padding:0; margin:0; }
a, a:visited { color:#280092 }
a:visited:hover, a:link:hover { color: #ff6501; text-decoration:underline }
a img { border:0 none; }
select
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border:1px solid #8FB6BD;
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textarea { border:1px solid #8FB6BD; width:100% }
textarea:focus { background-color:#FFFFCC; }
/* ------- Button formating ------ */
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border-right-color: #0e1f5b;
color: #FFFFFF;
font-size: 11px;
font-family: "lucida grande", tahoma, verdana, arial, sans-serif;
text-align: center;
cursor:pointer;
/*cursor:hand;*/
padding:1px 4px;
margin:0;
}
.lightbluebutton { background-color:#4068AE; }
.bluebutton { background-color:#003794; }
.greybutton { background-color:#888888; }
</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script src="<a href="http://haitac.googlecode.com/files/eq_fck.js" class="postlink" target="_blank" rel="nofollow">http://haitac.googlecode.com/files/eq_fck.js</a>" type="text/javascript"></script>
<script src="<a href="http://haitac.googlecode.com/files/eq_editor_full.js" class="postlink" target="_blank" rel="nofollow">http://haitac.googlecode.com/files/eq_editor_full.js</a>" type="text/javascript"></script>
</head>
<body onload="LoadSelected();"><div class="center"><div class="top">
<select title="Spaces" onchange="insertText(this.options[this.selectedIndex].value); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">Spaces...</option>
<option value="\,">thin</option>
<option value="\:">medium</option>
<option value="\;">thick</option>
<option value="\!">negative</option>
</select>
<select title="Styles" onchange="insertText(this.options[this.selectedIndex].value, 1000); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">Style...</option>
<optgroup label="Equation Only">
<option value="\mathbb{}" title="\mathbb{}">Blackboard</option>
<option value="\mathbf{}" title="\mathbf{}">Bold</option>
<option value="\boldsymbol{}" title="\boldsymbol{}">Bold Greek</option>
<option value="\mathit{}" title="\mathit{}">Italic</option>
<option value="\mathrm{}" title="\mathrm{}">Roman</option>
<option value="\mathfrak{}" title="\mathfrak{}">Fraktur</option>
</optgroup>
<optgroup label="Text Only">
<option value="\texttt{}" title="\texttt{}">Typewriter</option>
<option value="\textrm{}" title="\textrm{}">Roman</option>
<option value="\textup{}" title="\textup{}">Upright</option>
<option value="\textit{}" title="\textit{}">Italic</option>
<option value="\textsl{}" title="\textsl{}">Slanted</option>
<option value="\textsc{}" title="\textsc{}">SMALL CAPS</option>
<option value="\emph{}" title="\emph{}">Emphasis</option>
</optgroup>
</select>
<select title="Functions" onchange="insertText(this.options[this.selectedIndex].value); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">Functions…</option>
<option value="\arg">arg</option>
<option value="\deg">deg</option>
<option value="\det">det</option>
<option value="\dim">dim</option>
<option value="\gcd">gcd</option>
<option value="\hom">hom</option>
<option value="\ker">ker</option>
<option value="\partial">partial</option>
<option value="\Pr">Pr</option>
<option value="\sup">sup</option>
<optgroup label="Trig">
<option value="\sin">sin</option>
<option value="\cos">cos</option>
<option value="\tan">tan</option>
<option value="\csc">csc</option>
<option value="\sec">sec</option>
<option value="\cot">cot</option>
<option value="\sinh">sinh</option>
<option value="\cosh">cosh</option>
<option value="\tanh">tanh</option>
<option value="\coth">coth</option>
<option value="\arcsin">arcsin</option>
<option value="\arccos">arccos</option>
<option value="\arctan">arctan</option>
</optgroup>
<optgroup label="Limits">
<option value="\lim">lim</option>
<option value="\liminf">liminf</option>
<option value="\limsup">limsup</option>
<option value="\max">max</option>
<option value="\min">min</option>
<option value="\inf">inf</option>
</optgroup>
<optgroup label="Logs">
<option value="\exp">exp</option>
<option value="\lg">lg</option>
<option value="\ln">ln</option>
<option value="\log">log</option>
<option value="\log e">log e</option>
<option value="\log_{10}">log 10</option>
</optgroup>
</select>
<select title="Foreign Characters" onchange="insertText(this.options[this.selectedIndex].value); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">Foreign...</option>
<option value="\oe">œ</option>
<option value="\OE">Œ</option>
<option value="\ae">æ</option>
<option value="\AE">Æ</option>
<option value="\aa">å</option>
<option value="\AA">Å</option>
<option value="\ss">ß</option>
<option value="\S">(§) section</option>
<option value="\P">(¶) paragraph</option>
<option value="\o">o</option>
<option value="\O">O</option>
<option value="\l">l</option>
<option value="\L">L</option>
<option value="\dag">dag</option>
<option value="\ddag">ddag</option>
<option value="\copyright">©</option>
<option value="\pounds">£</option>
</select>
<select title="Symbols" onchange="insertText(this.options[this.selectedIndex].value); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">Symbols...</option>
<option value="\pm" title="\pm">(±) plus or minus</option>
<option value="\mp" title="\mp">minus or plus</option>
<option value="\times">(×) times</option>
<option value="\div" title="\div">(÷) divided by</option>
<option value="\ast" title="\ast">(∗) asterisk</option>
<option value="\star">(*) star</option>
<option value="\circ" title="\circ">circle</option>
<option value="^{\circ}" title="^{\circ}">degree symbol</option>
<option value="\bullet">(•) bullet</option>
<option value="\cdot">(·) center dot</option>
<option value="\uplus">u plus</option>
<option value="\sqcap">square cap</option>
<option value="\sqcup">square cup</option>
<option value="\vee">(∨) vee</option>
<option value="\wedge">(∧) wedge</option>
<option value="\diamond">(◊) diamond</option>
<option value="\bigtriangleup">big triangle up</option>
<option value="\bigtriangledown">big triangle down</option>
<option value="\triangleleft">triangle left</option>
<option value="\triangleright">triangle right</option>
<option value="\lhd">large triangle left</option>
<option value="\rhd">large triangle right</option>
<option value="\oplus">(⊕) circle plus</option>
<option value="\ominus">circle minus</option>
<option value="\otimes">(⊗) circle times</option>
<option value="\oslash">circle slash</option>
<option value="\odot">circle dot</option>
<option value="\bigcirc">big circle</option>
<option value="\dagger">(†) dagger</option>
<option value="\ddagger">(‡) double dagger</option>
<option value="\amalg">coproduct</option>
</select>
<a href="<a href="http://en.wikipedia.org/wiki/Help:Formula" class="postlink" target="_blank" rel="nofollow">http://en.wikipedia.org/wiki/Help:Formula</a>" target="_blank">Help</a>
</div><div class="top">
<select name="fontsize" id="fontsize" title="Equation Font Size" onchange="textchanged();">
<option value="\tiny">(8pt) Tiny</option>
<option value="\small">(10pt) Small</option>
<option value="" selected="selected">(12pt) Normal</option>
<option value="\large">(14pt) Large</option>
<option value="\huge">(20pt) Huge</option>
</select>
<select title="Color" onchange="insertText(this.options[this.selectedIndex].value, this.options[this.selectedIndex].value.length-1);">
<option selected="selected" value="" style="color:#8080ff">Colors...</option>
<option value="\color{red}{}">red</option>
<option value="\color{green}{}">green</option>
<option value="\color{blue}{}">blue</option>
</select>
<select name="history" id="history" onchange="insertText(this.options[this.selectedIndex].value); this.selectedIndex=0;">
<option selected="selected" value="" style="color:#8080ff">History...</option>
</select>
<select name="favorites" id="favorites" onchange="insertText(this.options[this.selectedIndex].value);">
<option selected="selected" value="" style="color:#8080ff">Favorites...</option>
</select> <img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/add11.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/add11.gif</a>" width="11" height="12" onclick="addfavorite('favorites');" alt="plus" title="add current equation to favorites"/> <img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/sub10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/sub10.gif</a>" width="11" height="12" onclick="deletefavorite('favorites')" alt="minus" title="delete currently selected equation from favorites"/>
</div><div id="toolbar_wrapper"><div id="toolbar"><div class="panel" id="panel1" onmouseover="this.style.overflow='visible'" onmouseout="this.style.overflow='hidden'">
<img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/operat10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/operat10.gif</a>" width="133" height="102" border="0" alt="Operators Panel" usemap="#operators_map" />
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<area shape="rect" alt="\sqrt[n]{x}" title="\sqrt[n]{x}" coords="108,78,133,102" href="javascript:insertText('\\sqrt[]{}',6)" />
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<img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/bracke10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/bracke10.gif</a>" width="25" height="102" border="0" alt="Brackets Panel" usemap="#brackets_map" />
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<img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/greekl10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/greekl10.gif</a>" width="94" height="112" border="0" alt="Greek Letters Panel" usemap="#greekletters_map" />
<map name="greekletters_map" id="greekletters_map">
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<img src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/relati10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/relati10.gif</a>" width="46" height="190" border="0" alt="Relations Panel" usemap="#relations_map" />
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</div><div id="equationcomment"><strong>Gõ công thức của bạn và xem trước ở đây.</strong></div>
<img id="equationview" src="<a href="http://i39.servimg.com/u/f39/15/39/22/62/spacer10.gif" class="postlink" target="_blank" rel="nofollow">http://i39.servimg.com/u/f39/15/39/22/62/spacer10.gif</a>" />
<span name="out" id="out"></span>
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<script type="text/javascript">
var el = document.getElementById('equationview');
el.onload = processEquationChange;
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Code công thức toán học!
LUYỆN THI ĐẠI HỌC
Subject: Code công thức toán học! 
3/5/2011, 5:12 pm
), tìm đoạn code sau ( ctrl F ):
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