I've heard a lot about this number $e$. Why is it so important? How does it fit into the 'bigger picture' of mathematics? How is it calculated and used?
Why is the number $e$ so important in mathematics?
22
$\begingroup$
calculus
http://books.google.com/books?id=eIsyLD_bDKkC&printsec=frontcover – 2010-08-26