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28
Mathieu Functions and Hill’s Equation
Mathieu Functions of Noninteger Order
28.12
Definitions and Basic Properties
28.14
Fourier Series
§28.13
Graphics
ⓘ
Keywords:
Mathieu functions
,
graphics
Permalink:
http://dlmf.nist.gov/28.13
See also:
Annotations for
Ch.28
Contents
§28.13(i)
Eigenvalues
λ
ν
(
q
)
for General
ν
§28.13(ii)
Solutions
ce
ν
(
x
,
q
)
,
se
ν
(
x
,
q
)
, and
me
ν
(
x
,
q
)
for General
ν
§28.13(i)
Eigenvalues
λ
ν
(
q
)
for General
ν
ⓘ
Keywords:
Mathieu’s equation
,
eigenvalues (or characteristic values)
,
graphics
Notes:
Figures
28.13.1
and
28.13.2
were produced at NIST.
Permalink:
http://dlmf.nist.gov/28.13.i
See also:
Annotations for
§28.13
and
Ch.28
Figure 28.13.1:
λ
ν
(
q
)
as a function of
q
for
ν
=
0.5
(
1
)
3.5
and
a
n
(
q
)
,
b
n
(
q
)
for
n
=
0
,
1
,
2
,
3
,
4
(
a
’s),
n
=
1
,
2
,
3
,
4
(
b
’s). (Compare Figure
28.2.1
.)
Magnify
3D
Help
ⓘ
Symbols:
a
n
(
q
)
: eigenvalues of Mathieu equation
,
b
n
(
q
)
: eigenvalues of Mathieu equation
,
λ
ν
+
2
n
(
q
)
: eigenvalues of Mathieu equation
,
q
=
h
2
: parameter
,
n
: integer
,
ν
: complex parameter
and
a
: parameter
Referenced by:
§28.12(i)
,
§28.13(i)
,
§28.16
Permalink:
http://dlmf.nist.gov/28.13.F1
Encodings:
pdf
,
png
See also:
Annotations for
§28.13(i)
,
§28.13
and
Ch.28
Figure 28.13.2:
λ
ν
(
q
)
for
−
2
<
ν
<
2
,
0
≤
q
≤
10
.
Magnify
3D
Help
ⓘ
Symbols:
λ
ν
+
2
n
(
q
)
: eigenvalues of Mathieu equation
,
q
=
h
2
: parameter
and
ν
: complex parameter
Referenced by:
§28.12(i)
,
§28.13(i)
,
§28.16
Permalink:
http://dlmf.nist.gov/28.13.F2
Encodings:
Vizualization
,
pdf
,
png
See also:
Annotations for
§28.13(i)
,
§28.13
and
Ch.28
§28.13(ii)
Solutions
ce
ν
(
x
,
q
)
,
se
ν
(
x
,
q
)
, and
me
ν
(
x
,
q
)
for General
ν
ⓘ
Notes:
Figures
28.13.3
–
28.13.5
were produced at NIST.
Permalink:
http://dlmf.nist.gov/28.13.ii
See also:
Annotations for
§28.13
and
Ch.28
Figure 28.13.3:
ce
ν
(
x
,
1
)
for
−
1
<
ν
<
1
,
0
≤
x
≤
2
π
.
Magnify
3D
Help
ⓘ
Symbols:
ce
n
(
z
,
q
)
: Mathieu function
,
π
: the ratio of the circumference of a circle to its diameter
,
x
: real variable
and
ν
: complex parameter
Referenced by:
§28.12(iii)
,
§28.13(ii)
Permalink:
http://dlmf.nist.gov/28.13.F3
Encodings:
Vizualization
,
pdf
,
png
See also:
Annotations for
§28.13(ii)
,
§28.13
and
Ch.28
Figure 28.13.4:
se
ν
(
x
,
1
)
for
0
<
ν
<
1
,
0
≤
x
≤
2
π
.
Magnify
3D
Help
ⓘ
Symbols:
se
n
(
z
,
q
)
: Mathieu function
,
π
: the ratio of the circumference of a circle to its diameter
,
x
: real variable
and
ν
: complex parameter
Permalink:
http://dlmf.nist.gov/28.13.F4
Encodings:
Vizualization
,
pdf
,
png
See also:
Annotations for
§28.13(ii)
,
§28.13
and
Ch.28
Figure 28.13.5:
me
i
μ
(
x
,
1
)
for
0.1
≤
μ
≤
0.4
,
−
π
≤
x
≤
π
.
Magnify
3D
Help
ⓘ
Symbols:
me
n
(
z
,
q
)
: Mathieu function
,
π
: the ratio of the circumference of a circle to its diameter
,
i
: imaginary unit
and
x
: real variable
Referenced by:
§28.13(ii)
,
§28.17
Permalink:
http://dlmf.nist.gov/28.13.F5
Encodings:
Vizualization
,
pdf
,
png
See also:
Annotations for
§28.13(ii)
,
§28.13
and
Ch.28