:
: (1) n=1
n=1
(2) n=r :
(3) n=r+1![]()
n=r+1
![]()
![]()
:
: (1) n=1
n=1
(2) n=r :
(3) n=r+1![]()
n=r+1
![]()
![]()
(1) n=1
n=1
(2) n=r :
(3) n=r+1 cos(r+1)x
n=r+1
![]()
![]()
: 1 (0 1 )
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