exponential
definition and properties - see
Functions - Theory - Elementary functions - Exponentials, logarithms
derivative - see
Derivatives - Theory - Introduction - Elementary derivatives
expansion - see
Series - Theory - Series of functions - Taylor series
and
this note
general - integral of - see
Integrals - Theory - Methods of integration - Substitution
integral of - see
Integrals - Theory - Methods of integration - Elementary integrals
exponentals and sequences - see
Sequences - Theory - Limit - Important examples
, also
Sequences - Theory - Limit - Intuitive evaluation