计算:(1−1/22)(1−1/32)(1−1/42)…(1−1/20042)(1−1/20052)
问题描述:
计算:(1−
)(1−1 22
)(1−1 32
)…(1−1 42
)(1−1 20042
) 1 20052
答
(1−
)(1−1 22
)(1−1 32
)…(1−1 42
)(1−1 20042
)=1 20052
•
22−1 22
•
32−1 32
…
42−1 42
=
20052−1 20052
×1 2
=2006 2005
.1003 2005