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代數 指數問題求解
版主: thepiano
Re: 代數 指數問題求解
27^(1/x) = 477 ... (1)
27^(1/y) = 53 ... (2)
(1) / (2)
27^(1/x - 1/y) = 9
3^[3(1/x - 1/y)] = 3^2
1/x - 1/y = 2/3
也可以用對數做,您可試試
27^(1/y) = 53 ... (2)
(1) / (2)
27^(1/x - 1/y) = 9
3^[3(1/x - 1/y)] = 3^2
1/x - 1/y = 2/3
也可以用對數做,您可試試