反對(duì)數(shù) fǎn duì shù
又稱“逆對(duì)數(shù)”。如果正數(shù)n的對(duì)數(shù)為b,則稱n為b的反對(duì)數(shù),記作n=log??-1?ab(a>0,a≠1)。反對(duì)數(shù)就是由已知對(duì)數(shù)b去求出相應(yīng)的真數(shù)n。
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反對(duì)數(shù) fǎn duì shù
又稱“逆對(duì)數(shù)”。如果正數(shù)n的對(duì)數(shù)為b,則稱n為b的反對(duì)數(shù),記作n=log??-1?ab(a>0,a≠1)。反對(duì)數(shù)就是由已知對(duì)數(shù)b去求出相應(yīng)的真數(shù)n。