intersentencespace"></span></td>
<td class="align_left">Polar function</td>
<td class="align_left">Eccentricity <span class="intersentencespace"></span></td>
</tr><tr><td class="align_left">Circle</td>
<td class="align_left"><span class="inline_math">\( x^2+y^2=R^2 \)</span> </td>
<td class="align_left"><span class="inline_math">\( r(\theta)=R \)</span></td>
<td class="align_left"><span class="inline_math">\( \varepsilon = 0 \)</span></td>
</tr><tr><td class="align_left">Ellipse</td>
<td class="align_left">