7. . # )%
0 + 2
)% " # )% (2 ) " )# %
" ! "! #$ %:
(! " # $# %&
log
1
5 2 6
2
( ) 8log 4
( ) 10( )
n n
f n n n n
f n n n n
= +
= + +
2 5 7
3
4
4
( )
( ) log n
f n n n n
f n n
= ⋅ +
=
. # )%
0 + 3
)% " # )% (2 ) " )# %
" ! "! #$ %:
)! " # $# %&
1
2
( ) 3
( ) log( )
n
n
f n
f n n
=
=
log
3
5
4
( ) 2
( ) ( )
n
n
f n
f n n
=
=