多項選擇題

按各指數(shù)權數(shù)選擇不同,指數(shù)數(shù)列可分為()

A.不變權數(shù)指數(shù)數(shù)列
B.可變權數(shù)指數(shù)數(shù)列
C.定基指數(shù)數(shù)列
D.環(huán)比指數(shù)數(shù)列

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