設log2 = a, log7 = b 如何用a及b表示log base 2(1/14)?

👨🏻‍🏫 學術台數學

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2020-09-11 9:57 pm

回答 (1)

老怪物

2020-09-11 11:48 pm

log_2(1/14) = - log_2(14) = - log(14)/log(2)
= - (log(2) + log(7))/log(2) = - (a+b)/a = -1 - b/a

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