THE master of Sidney Sussex College, Cambridge, here provides a “key” to the examples in the new edition of his “Treatise on Conic Sections by the Methods of Coordinate Geometry,” published recently.

The coordinates of three points A, B and C are given. Find the coordinates of points D and E. The highlighted words are the most important ones. What is the question asking? The question wants two ...

THE merits of this book are so well known that comment is almost needless. Nearly thirty years have passed since it was first published, and since then a few additions have been made from time to time ...