Number:
6641
Author:
Issue:
ET Vol 34, Mar 1881
Tags:
Conic Sections (parabolas, ellipses, hyperbolas)
Solved by:
W.M. Coates, MQ Vol 35
Solved by:
Lizzie A. Kittudge, MQ Vol 35
Solved by:
W.S. McCay, MQ Vol 35