Excerpt from Plane Analytic Geometry: With Introductory Chapters on the Differential Calculus Analytic geometry, if properly taught, is a difficult subject, and concentration on a few of its important princi ples is necessary if mastery is the aim. I have cut out, or put in small type (or in late chapters which may be easily omitted) what seems to me less essential. With very few exceptions I have used methods so straightforward that they can serve as models for the student in his own work. Neither the notation of determinants nor (except in Chapters XII, XIII) that of the calculus has been used, since a difficult new subject is only obscured by a notation which has not already become thoroughly familiar, and I am old-fashioned enough to believe in handling one difficulty at a time. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.