若常用對數(shù)的真數(shù)大于1,則對數(shù)的首數(shù)為正數(shù)和零,其值比整數(shù)位數(shù)少1;若常用對數(shù)真數(shù)小于1,則對數(shù)的首數(shù)為負數(shù),其絕對值等于真數(shù)有效數(shù)字前面“0”的個數(shù)(包括小數(shù)點前的那個“0”). (本文共 90 字 ) [閱讀本文] >>
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 若常用對數(shù)的真數(shù)大于1,則對數(shù)的首數(shù)為正數(shù)和零,其值比整數(shù)位數(shù)少1;若常用對數(shù)真數(shù)小于1,則對數(shù)的首數(shù)為負數(shù),其絕對值等于真數(shù)有效數(shù)字前面“0”的個數(shù)(包括小數(shù)點前的那個“0”). (本文共 90 字 ) [閱讀本文] >>