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I
(
)
I
represents the imaginary unit
.
MORE INFORMATION
Numbers containing
I
are converted to the type
Complex
.
I
can be entered in
StandardForm
and
InputForm
as
,
Esc
ii
Esc
or
\[ImaginaryI]
.
,
Esc
jj
Esc
and
\[ImaginaryJ]
can also be used.
In
StandardForm
and
TraditionalForm
,
I
is output as
.
EXAMPLES
CLOSE ALL
Basic Examples
(3)
I
can be entered as
Esc
ii
Esc
(for "imaginary i"):
In[1]:=
Out[1]=
Generate from square roots of negative real numbers:
In[1]:=
Out[1]=
Use
I
in exact and approximate calculations:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
Scope
(2)
Generalizations & Extensions
(6)
Applications
(2)
Properties & Relations
(12)
Possible Issues
(9)
Neat Examples
(2)
SEE ALSO
Complex
Re
Im
ComplexExpand
GaussianIntegers
TUTORIALS
Some Mathematical Functions
Complex Numbers
Mathematical Constants
RELATED LINKS
MathWorld
The Wolfram Functions Site
MORE ABOUT
Complex Numbers
Mathematical Constants
Mathematical Functions
Trigonometric Functions
New in 1 | Last modified in 3
© 2008 Wolfram Research, Inc.
. 
, Esc ii Esc or \[ImaginaryI]. 
, Esc jj Esc and \[ImaginaryJ] can also be used. .
EXAMPLES
Basic Examples 
Scope 