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[請問] 指數對數問題

Mar 28th 2015, 17:19, by haha2385

作者haha2385 (haha2385)

看板ask

標題[請問] 指數對數問題

時間Sat Mar 28 17:19:16 2015

http://i.imgur.com/64z6Amo.jpg

http://i.imgur.com/C0t93jv.jpg

想請問一下第一張圖中圈起來的地方是用換底求出來嗎？不知道為什麼我的a^x算出來都在分子第二張圖為什麼1的無限大次方不是1嗎為什麼答案是無限大問題有點笨,但想求個詳細解T_T 謝謝 -- Sent from my Android -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 114.42.110.146 ※ 文章網址: https://www.ptt.cc/bbs/ask/M.1427534359.A.174.html ※ 編輯: haha2385 (114.42.110.146), 03/28/2015 17:25:46

→ iouhsu: 算換底吧就是把a^x換成e^ln(a^x) e=2.71...所以e^x→無限 03/28 17:51

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