The ebook Elementary Calculus is based on material originally written by H.J. Keisler. For more information please read the copyright pages.


Example 1

Consider01_real_and_hyperreal_numbers-105.gif. ε is infinitesimal, so -3ε is infinitesimal,

and b - 3ε is finite but not infinitesimal. Similarly, c + 2δ is finite but not infinitesimal. Therefore the quotient

01_real_and_hyperreal_numbers-106.gif

is finite but not infinitesimal.


Last Update: 2006-11-15