Re: [高微] marsden 1-3 習題
5.
Let S包含在[0,1] consist of all infinite decimal expansions
x=0.(a1)(a2)(a3)(a4)......
where all but finitely many digits are 5 or 6 . Find supS?
題目有點看不懂 也不知怎麼做 感謝
前幾天有問過 但沒有高手幫忙Q_Q 只好再問一次(前面那篇已刪)
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◆ From: 119.14.33.22
推
10/19 23:31, , 1F
10/19 23:31, 1F
Marsden大寫的= =
我再猜是不是說 有限位的時候 數字是隨意的
但到了無限位之後 就只剩下5和6兩種在跳
※ 編輯: craig100 來自: 119.14.33.22 (10/19 23:38)
推
10/19 23:40, , 2F
10/19 23:40, 2F
推
10/19 23:47, , 3F
10/19 23:47, 3F
推
10/19 23:59, , 4F
10/19 23:59, 4F
→
10/20 00:00, , 5F
10/20 00:00, 5F
推
10/20 02:30, , 6F
10/20 02:30, 6F
→
10/20 02:36, , 7F
10/20 02:36, 7F