數(shù)列中,an-an-1=常數(shù).能證明此數(shù)列為等差數(shù)列嗎?an/an-1=常數(shù),能證明此數(shù)列為等比數(shù)列么?
數(shù)列中,an-an-1=常數(shù).能證明此數(shù)列為等差數(shù)列嗎?an/an-1=常數(shù),能證明此數(shù)列為等比數(shù)列么?
RT.
RT.
數(shù)學(xué)人氣：373 ℃時(shí)間：2020-06-03 18:14:41
優(yōu)質(zhì)解答
能的,不過還要求a1,還有要標(biāo)明（n>=2)等差和等比這兩個(gè)都可以嗎？可以。嗯。謝謝。
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