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6
Exponential, Logarithmic, Sine, and
Cosine Integrals
Properties
6.3
Graphics
6.3
Graphics
6.4
Analytic Continuation
Figure 6.3.3
(See
in context
.)
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3D
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Figure 6.3.3:
|
E
1
(
x
+
i
y
)
|
,
−
4
≤
x
≤
4
,
−
4
≤
y
≤
4
. Principal value. There is a cut along the negative real axis. Also,
|
E
1
(
z
)
|
→
∞
logarithmically as
z
→
0
.
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3D
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ⓘ
Annotations:
Symbols:
E
1
(
z
)
: exponential integral
,
i
: imaginary unit
,
x
: real variable
and
z
: complex variable
Keywords:
exponential integrals
,
graphics
Permalink:
http://dlmf.nist.gov/6.3.F3.mag
Encodings:
Magnified png
,
Vizualization
,
pdf
See also:
Annotations for
§6.3
and
Ch.6