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.

Sketch the graph of the ellipse \(\ds \frac{x^2}{9}+\frac{y^2}{16}=1\) and determine its foci. Let \(C\) be the conic which consists of all points \(P=(x,y)\) such ...

A TEXT-BOOK for students who have already finished the straight line and circle: its contents are about equally divided between the conic sections and the geometry of three dimensions, finishing with ...