Excerpt from Archiv der Mathematik und Physik, 1852, Vol. 19: Mit Besonderer Rücksicht auf die Bedürfnisse der Lehrer an Höhern Unterrichtsanstalten; Erstes HeftDer geometrische Ort des Punktes der eine solche Lage zu zwei festen Kreisen hat, dass die Quadrate der von ihm aus an die Kreise gezogenen Tangenten eine constante Difl'erenz haben, heisse „die Linie äquidill'erenter Potenmn für diese zwei Kreise.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.