Number:
15977
Author:
Issue:
ET Vol 59, Apr 1906
Tags:
Conic Sections (parabolas, ellipses, hyperbolas)
Solved by:
W.J. Dobbs, MQ Vol 86
Solved by:
F.W. Reeves, MQ Vol 86
Solved by:
W.A. Sleight, MQ Vol 86