ign: center"><a href="index.html">- Contents -</a></td>
	<td class="footer" style="text-align: right"><a href="atan33.html">&rarr;</a></td>
	</tr>
	</table>
	<h2>
Basis polynomial
	</h2>
	<canvas id="basis_canvas" width=640 height=640></canvas>
	<div style="text-align:center; padding-bottom:12pt;">
		<input type="radio" name="approx" id="a_1" value="Add" /><label for="a_1">Add a point;</label> &nbsp;
		<input type="radio" name="approx" id="a_2" checked value="Move"><label for="a_2">move a point.</label> &nb