\{\{c\}\}]=\(\backslash\)sage\{Modal\_contribution\}</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;00086 \(\backslash\)end\{equation\}</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;00087 </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;00088 </div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;00089 Sa By G</div>
<div class="line"><a name="l00094"></a><span class="l