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NIST
4
Elementary Functions
Logarithm, Exponential, Powers
4.13
Lambert
W
-Function
4.13
Lambert
W
-Function
4.14
Definitions and Periodicity
Figure 4.13.1
(See
in context
.)
Magnify
Figure 4.13.1:
Branches
Wp
(
x
)
and
Wm
(
x
)
of the Lambert
W
-function.
A
and
B
denote the points
-
1
/
e
and
e
, respectively, on the
x
-axis.
Magnify
ⓘ
Annotations:
Symbols:
W
(
x
)
: Lambert
W
-function
,
Wm
(
x
)
: nonprincipal branch of Lambert
W
-function
,
Wp
(
x
)
: principal branch of Lambert
W
-function
,
e
: base of natural logarithm
and
x
: real variable
Keywords:
Lambert
W
-function
,
graphs
,
other branches
,
principal branch
Permalink:
http://dlmf.nist.gov/4.13.F1.mag
Encodings:
Magnified png
,
pdf
See also:
Annotations for
§4.13
and
Ch.4