Trilinear Coordinates and Other Methods of Modern Analytical Geometry of Two Dimensions: An Elementary Treatise (Classic Reprint)

Analytical Geometry excels the method of Des Cartes in the precision with which it deals with the Infinite and the I maginary. So soon, therefore, as the student has become familiar with the meaning of equations and the significance of their combinations, as exemplified in the simplest Cartesian treatment of Conic Sections, it seems advisable that he should at once take up the modern methods rather than apply a less suitable treatment to researches for which these methods are especially adapted. By this plan he will best obtain fixed and definite notions of what is signified by the words infinite and imaginary, and much light will be thereby thrown upon his knowledge of A lgebra, while at the same time, his facility in that most important subject will be greatly increased by the wonderful variety of expedient in the combination of algebraical equations which the methods of modern analytical geometry present, or suggest. With this view I have endeavoured, in the following pages, to make my subject intelligible to those whose knowledge of the processes of analysis may be very limited; and I have devoted especial care to the preparation of the chapters on Infinite and Imaginary space, so as to render them suitable for those whose ideas of geometry have as yet been confined to the region of the Heal and the Finite.
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