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Astronomical Applications Department, U.S. Naval Observatory - Precession Maple (Page 8)Wodocs >> Science : Astronomy >> Astronomical Applications Department, U.S. Naval Observatory Precession Maple Page 8
:=
SymTop
(
)
subs
,
,
=
I
x
I
y
=
I
y
I
xy
BodyEqs
SymTop
2
t
2
( )
cos
2
t
2
( )
sin
(
)
sin
+
:=
+
I
z
t
t
I
xy
(
)
-
I
z
I
xy
t
2
(
)
cos
I
xy
( )
cos
(
)
sin
+
-
+
I
z
t
I
xy
(
)
cos
(
)
-
2 I
xy
I
z
t
I
xy
( )
sin
t
K
x
I
xy
+
-
2
t
2
( )
sin
-
,
2
t
2
( )
cos
(
)
sin
-
+
I
z
t
t
I
xy
(
)
-
I
xy
I
z
t
2
(
)
cos
I
xy
( )
sin
(
)
sin
+
+
-
+
I
z
t
I
xy
(
)
cos
(
)
-
2 I
xy
I
z
t
I
xy
( )
cos
t
K
y
I
xy
+
-
,
+
-
-
2
t
2
2
t
2
(
)
cos
t
(
)
sin
t
K
z
I
z
SymTop
seq collect
simplify
,
,
SymTop
k
=
-
1
I
z
I
xy
[
]
I
z
,
:=
,
,
,
,
,
,
2
t t
2
t t
( )
sin
( )
cos
(
)
sin
t
diff
factor
,
=
k
..
1
3
,
SymTop
2
t
2
( )
cos
2
t
2
( )
sin
(
)
sin
+
:=
+
(
)
- +
1
t
(
)
cos
(
)
+
1
t
t
( )
sin
+
-
(
)
-
1
t
t
t
2
(
)
cos
(
)
sin
( )
cos
K
x
I
xy
+
-
2
t
2
( )
sin
-
,
2
t
2
( )
cos
(
)
sin
+
(
)
- +
1
t
t
t
2
(
)
cos
(
)
sin
( )
sin
+
+
Page 8
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