问题
选择题
|
答案
[n(1-lim n→∞
)(1-1 3
)(1-1 4
)(1-1 5
)]1 n+2
=
[n×lim n→∞
×2 3
×3 4
×…×4 5
]n+1 n+2
=lim n→∞ 2n n+2
=2.
故选C.
|
[n(1-lim n→∞
)(1-1 3
)(1-1 4
)(1-1 5
)]1 n+2
=
[n×lim n→∞
×2 3
×3 4
×…×4 5
]n+1 n+2
=lim n→∞ 2n n+2
=2.
故选C.