 



\def{integer a=randint(2..7)}
\def{integer b = randint(2..7)}
\def{integer p = randint(2..7)}
\def{integer c=max(\a,\b)}
\def{integer B=\b^2}
\def{integer A=\a^2}
\def{integer C=2*\p}
\def{integer epsilon=randint(-1,1)}
\def{real d=sqrt(\b/\a)}

\def{text ellipse=
xrange -1.2*\c,1.2*\c
yrange -1.2*\c,1.2*\c
levelcurve red,x^2/\a^2+y^2/\b^2, 1
hline 0,0, black
vline 0,0, black
arrow 0,0,1,0,8, black
arrow 0,0,0,1,8, black
}

<table cellpadding="2" cellspacing="2" border="1"
 style="text-align: left; width: 100%;">
  <tbody>
    <tr>
      <td style="vertical-align: top;">\(\lambda h &gt; 0) &nbsp;
&nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp;&nbsp; <br>
      </td>
      <td
 style="vertical-align: top; background-color: rgb(255, 204, 204);">
     \(\mathcal{C}=\emptyset.)</blockquote>
      <br>
      </td>
      <td style="vertical-align: top;"><br>
      </td>
    </tr>
    <tr>
      <td style="vertical-align: top;">\(h = 0)</td>
      <td
 style="vertical-align: top; background-color: rgb(153, 255, 153);">\(\mathcal{C}={\omega})</td>
      <td style="vertical-align: top;"><br>
      </td>
    </tr>
    <tr>
      <td style="vertical-align: top;">\(\lambda h &lt; 0)</td>
      <td
 style="vertical-align: top; background-color: rgb(255, 255, 153);">
\(\mathcal{C})
est une ellipse d'&eacute;quation
\(\frac{x^2} {a^2} +\frac{y^2}{b^2}-1 = 0), de centre \(\omega) et
d'axes \((\omega, \vec{v_1})) et &nbsp;\((\omega, \vec{v_2}.))</td>
      <td style="vertical-align: top;">\draw{200,200}{
\ellipse
}
    
Ellipse d'&eacute;quation: \(\frac{x^2} {\A}
+\frac{y^2}{\B} = 1.)
      
      </td>
    </tr>
</table>
<a name="exemple10">

\reload{renouvelez les figures}{exemple10}