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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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指數律（急） 大師請進
Oct 1st 2013, 12:29

（1）3^120，4^90，5^60，大小關係為何？

3^120=(3^4)^30=81^30
4^90=(4^3)^30=64^30
5^60=(5^2)^30=25^30

所以3^120 > 4^90 > 5^60

（2）2^5＝32 ，2^10＝1024，2的幾次（最少）會超過一千萬？

2^22=4194304
2^23=8388608
2^24=16777216

所以 2^24 最少會超過一千萬

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