PRODUCTS
Mathematica
Mathematica for Students
Mathematica for the Classroom
Mathematica Personal Grid Edition
grid
Mathematica
web
Mathematica
Mathematica Player
(free download)
Mathematica Player Pro
Wolfram
Workbench
Mathematica
Applications
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
FOR USERS
All User Resources
Product Registration
Technical Support
Customer Service
Developer Support
Does My Site Have a License?
Free Seminars
Certified Training
Documentation & Examples
Tutorial Screencasts
Video Gallery
Demonstrations Project
Education Portal
Student Resources
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
Demonstrations Project
MathWorld
Integrator
Wolfram Functions Site
Wolfram Blog
Mathematica Journal
Wolfram Library Archive
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
Mathematica
>
Error and Exponential Integral Functions
>
Built-in
Mathematica
Symbol
Special Functions
Tutorials »
|
ExpIntegralEi
Erf
LogIntegral
SinIntegral
CosIntegral
See Also »
|
Error and Exponential Integral Functions
Special Functions
More About »
ExpIntegralE
ExpIntegralE
[
n
,
z
]
gives the exponential integral function
E
n
(
z
)
.
MORE INFORMATION
Mathematical function, suitable for both symbolic and numerical manipulation.
.
ExpIntegralE
[
n
,
z
]
has a branch cut discontinuity in the complex
z
plane running from
-
to
0
.
For certain special arguments,
ExpIntegralE
automatically evaluates to exact values.
ExpIntegralE
can be evaluated to arbitrary numerical precision.
ExpIntegralE
automatically threads over lists.
EXAMPLES
CLOSE ALL
Basic Examples
(3)
Evaluate numerically:
In[1]:=
Out[1]=
In[1]:=
Out[1]=
In[1]:=
Out[1]=
Scope
(2)
Generalizations & Extensions
(3)
Applications
(3)
Properties & Relations
(7)
Possible Issues
(3)
Neat Examples
(1)
SEE ALSO
ExpIntegralEi
Erf
LogIntegral
SinIntegral
CosIntegral
TUTORIALS
Special Functions
RELATED LINKS
MathWorld
The Wolfram Functions Site
MORE ABOUT
Error and Exponential Integral Functions
Special Functions
New in 1
© 2008 Wolfram Research, Inc.
. 
to 0.
EXAMPLES
Basic Examples 
Scope 