This is the eighth of eleven Letters of Euler I will rewrite and post on the subject of infinitesimals (the infinitely small), an idea that is fundamental to a good understanding of calculus. Yes, this is the eighth letter on infinitesimals, but letter XIV=14 in Volume 2 of Euler's book.  Click here to read the … Continue reading Letters of Euler to a German Princess, Vol. II, Letter XIV

This is the seventh of eleven Letters of Euler I will rewrite and post on the subject of infinitesimals (the infinitely small), an idea that is fundamental to a good understanding of calculus. Click here to read the previous letter. Principle of the satisfying Reason, the strongest Support of the Monadists. You must be perfectly sensible that one of the … Continue reading Letters of Euler to a German Princess, Vol. II, Letter XIII