2X= +Π K Π X= Π +K Π X= − Π +K Π; D
2 ,
2 ,
2
x
= +
π
k
π
x
=
π
+
k
π
x
=
−
π
+
k
π
;
D.
2
,
2
x
= +
π
k
π
x
=
π
+
k
π
;
C.
2
2
4
3
3
4
3
2 ,
2 ,
2
x
= +
π
k
π
x
=
π
+
k
π
x
=
−
π
+
k
π
;
D.
2
,
2
x
= +
π
k
π
x
=
π
+
k
π
;
C.
2
2
4
3
3
4
3