A collection of curves
<img src="http://i43.photobucket.com/albums/e375/Exfangman/141010curves1.jpg" border="0" alt="" /></p>
<p> </p> <p>A challenge for a draftsman to set out these on graph paper!</p> <p> </p> <p>Swans at St Ives</p> <p>&n |
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