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