📙 Excerpt from Leçons sur l'Approximation des Fonctions d'une Variable Réelle: Professées à la SorbonneEn particulier, 51 l'expression trigonométrique d'ordre n est paire, elle se réduit, les sinus disparaissant. À un polynome de degré n en cosa.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.