T
n
(
x
)
=
x
x
3
3!
+
x
5
5!
±
...
±
x
n
n!
 
[n 
ungerade
=
 

[
n
1
2
]
k
=
0
 
(
1
)
k
·
x
2k
+
1
(
2k
+
1
)
!
 
  ;  
 
lim
n
 
T
n
 
(
x
)
=
sin
 
x