Choice and Chance. E-book. Formato PDF William Allen Whitworth   -  Forgotten Books, 2017  - 

In the second and third appendices, which are newly added in this edition, a series of propositions are given which are not usually found in text books of algebra.

Trilinear Coordinates: And Other Methods of Modern Analytical Geometry of Two Dimensions: An Elementary Treatise. E-book. Formato PDF William Allen Whitworth   -  Forgotten Books, 2017  - 

I have sought to exhibit methods rather than results, to furnish the student with the means of establishing properties for himself rather than to present him with a repertory of iso lated propositions ready proved. Thus I have not hesitated in some cases to give a variety of investigations Of the same theorem, when it seemed well so to compare different methods, and on the other hand interesting propositions have sometimes been placed among the exercises rather than inserted in the text.

Choice and Chance: With 1000 Exercises. E-book. Formato PDF William Allen Whitworth   -  Forgotten Books, 2017  - 

This work has been considerably enlarged since the publication of the Fourth Edition. Not only does the Volume contain some 45 pages more than its predecessor, but further space has been gained by the use of smaller type for merely illustrative matter. The most important addition in the body of the work is the very far-reaching theorem which I have given as Prop. LVII. Which enables us to write down at sight the mean value of such functions as a3, &c., when a, B, 7, are the parts into which a given magnitude is divided at random. I first published this theorem in a pamphlet in the year 1898.