Number:
12409
Author:
Issue:
ET Vol 47, Jul 1894
Tags:
Conic Sections (parabolas, ellipses, hyperbolas)
Solved by:
A. Droz-Farny, MQ Vol 62
Solved by:
K.J. Sanjána, MQ Vol 62
Solved by:
P.H. Schoute, ET Vol 47, Oct 94