0
less than or equal to theta less than or equal to
2 pi
9
0
less than or equal to theta less than or equal to
2 pi
10
0
less than or equal to theta less than or equal to
2 pi
11
0
less than or equal to theta less than or equal to
2 pi
12
0
less than or equal to theta less than or equal to
2 pi
13
14
15
16
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ดำเนินการโดย
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