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Excerpt from Nouvelle Annales de Mathématiques, 1860, Vol. 19: Journal des Candidats aux Écoles Polytechnique Et Normale; Augmenté d'un Bulletin de Bibliographie, d'Histoire Et de Biographie Mathématiques Supposons I.i conique rapportée à deux axes de coor données rectangulaires; prenons pour axe des Y la nor male en P et pour axe des X la tangente au mème point(6) 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.