> 数学 >
(1+
1
97
)+(2+
2
97
)+(3+
3
97
)+…+(96+
96
97
)+(97+
97
97
)
人气:435 ℃ 时间:2020-01-31 18:13:18
解答
(1+
1
97
)+(2+
2
97
)+(3+
3
97
)+…+(96+
96
97
)+(97+
97
97
),
=1+2+3+…+96+97+(
1
97
+
2
97
+
3
97
+…+
96
97
+
97
97
),
=(1+97)×97÷2+[(1+97)×97÷2×
1
97
],
=4753+[4753×
1
97
],
=4753+49,
=4802.
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