[中學] JHMC團體賽試題
今年團體賽的試題
一數列{x(n)} 已知x(1)=1/5 且x(k+1)-x(k)=[x(k)]^2
若 1 1 1 1
-------- + -------- + -------- + ... + -----------
x(1)+1 x(2)+1 x(3)+1 x(2010)+1
之值介於正整數t與t+1之間,試求t
想了好久都解不出來,請板上大大解救一下,感謝
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12/26 21:25, , 1F
12/26 21:25, 1F
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12/26 21:26, , 2F
12/26 21:26, 2F
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12/26 21:27, , 3F
12/26 21:27, 3F
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12/26 21:29, , 4F
12/26 21:29, 4F
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12/26 21:35, , 5F
12/26 21:35, 5F
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12/26 21:40, , 6F
12/26 21:40, 6F
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12/26 22:55, , 7F
12/26 22:55, 7F