问题:
观察下列各式,回答问题
1-
1
22
=
1
2
×
1
3
, 1-
1
32
=
2
3
×
4
3
, 1-
1
42
=
3
4
×
5
4
….
按上述规律填空:
(1) 1-
1
1002
=______×______, 1-
1
20052
=______×______.
(2)计算: (1-
1
22
)×(1-
1
32
)…× (1-
1
20042
)×(1-
1
20052
).
观察下列各式,回答问题
1-
=
×
, 1-
=
×
, 1-
=
×
….
按上述规律填空:
(1) 1-
=______×______, 1-
=______×______.
(2)计算: (1-
)×(1-
)…× (1-
)×(1-
).
1-
1 |
22 |
1 |
2 |
1 |
3 |
1 |
32 |
2 |
3 |
4 |
3 |
1 |
42 |
3 |
4 |
5 |
4 |
按上述规律填空:
(1) 1-
1 |
1002 |
1 |
20052 |
(2)计算: (1-
1 |
22 |
1 |
32 |
1 |
20042 |
1 |
20052 |
参考答案: