{-2,0,12…} {π,2.010010001…,…} {0,12…} {-
,-1.6,-
…} {-
,-1.6,-2,-
…} {-
,-1.6,2.5,-2,0,12,3.14159,-
,85%…}
分析:根據(jù)實(shí)數(shù)的分類進(jìn)行解答.
解答:整數(shù)集合{-2,0,12…};
無理數(shù)集合{π,2.010010001…,…};
非負(fù)整數(shù)集合{0,12…};
負(fù)分?jǐn)?shù)集合{-
,-1.6,-
…};
負(fù)數(shù)集合{-
,-1.6,-2,-
…};
有理數(shù)集合{-
,-1.6,2.5,-2,0,12,3.14159,-
,85%…}.
故答案為{-2,0,12…};{π,2.010010001…,…};{0,12…};{-
,-1.6,-
…};{-
,-1.6,-2,-
…};{-
,-1.6,2.5,-2,0,12,3.14159,-
,85%…}.
點(diǎn)評:本題考查了實(shí)數(shù)的定義及分類,有理數(shù)和無理數(shù)統(tǒng)稱實(shí)數(shù),其中有理數(shù)包括正有理數(shù)、0和負(fù)有理數(shù),無理數(shù)包括正無理數(shù)和負(fù)無理數(shù).