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(普通班)函数 f( x)的定义域为R, f(-1)=2,对任意 x∈R, f′( x)>2,则 f( x)>2 x+4的解集为(  )

发布时间:2021-08-03

A.(-1,1)

B.(-1,+∞)

C.(-∞,-1)

D.(-∞,+∞) (实验班)已知可导函数 http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image001.png的导函数为 http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image002.png,且满足:① http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image003.png,② http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image004.png,记 http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image005.pnghttp://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image006.pnghttp://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image007.png,则 http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image008.png的大小顺序为() A. http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image009.pngB. http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image010.pngC. http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image011.pngD. http://picflow.koolearn.com/upload/2012-08/08/31b89cde-ee55-4bcc-84ad-6fddd438ee49/paper.files/image012.png

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