e
From Conservapedia
The Euler Number, symbolized e, is an irrational transcendental number approximately equal to 2.718281828459045 . It can be used in logarithms as the base, called a natural logarithm. It is named for Swiss mathematician Leonhard Euler, though he did not discover the constant.
It has some remarkable properties. For example:
(i.e. the exponential function is an eigenfunction of the derivative operator, with eigenvalue 1).
Formulae for e
- With limits -
- With infinite series -