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点(x,y)在映射“ f”的作用下的象是点(x+2y, 3x-4y),则在此映射的作用下的点(5, 6)的原象是(  )

发布时间:2021-08-04

A.(5, 6)

B.( http://picflow.koolearn.com/upload/2010-11/20/3116c7da-6989-4341-8022-107f49e53094/paper.files/image021.gif, http://picflow.koolearn.com/upload/2010-11/20/3116c7da-6989-4341-8022-107f49e53094/paper.files/image022.gif)

C.(17, -9)

D.以上都不对

试卷相关题目

  • 1设集合 http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image002.gifhttp://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image003.gif,则从 http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image004.gifhttp://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image005.gif的映射共有( http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image006.gif    )

    A.2 个

    B.4个

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    D.8个

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  • 2已知 http://picflow.koolearn.com/upload/2013-03/21/1463fd67-e897-4b52-a8ff-b811de93c7b2/paper.files/image015.png是从 http://picflow.koolearn.com/upload/2013-03/21/1463fd67-e897-4b52-a8ff-b811de93c7b2/paper.files/image016.pnghttp://picflow.koolearn.com/upload/2013-03/21/1463fd67-e897-4b52-a8ff-b811de93c7b2/paper.files/image017.png的映射,若1和8的原象分别是3和10,则5在http://picflow.koolearn.com/upload/2013-03/21/1463fd67-e897-4b52-a8ff-b811de93c7b2/paper.files/image018.png下的象是(   )

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  • 3若函数 http://picflow.koolearn.com/upload/2015-03/06/e7d33ffa-6bed-4b16-b42d-711dce645d2b/paper.files/image073.png满足 http://picflow.koolearn.com/upload/2015-03/06/e7d33ffa-6bed-4b16-b42d-711dce645d2b/paper.files/image074.png,则称为满足“倒负”变换的函数,下列函数: ① http://picflow.koolearn.com/upload/2015-03/06/e7d33ffa-6bed-4b16-b42d-711dce645d2b/paper.files/image075.png;② http://picflow.koolearn.com/upload/2015-03/06/e7d33ffa-6bed-4b16-b42d-711dce645d2b/paper.files/image076.png;③ http://picflow.koolearn.com/upload/2015-03/06/e7d33ffa-6bed-4b16-b42d-711dce645d2b/paper.files/image077.png其中满足“倒负”变换的函数是(  )

    A.①②

    B.①③

    C.②③

    D.①

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  • 4下列函数中与函数 http://picflow.koolearn.com/upload/2015-01/05/322c6e96-d724-4327-87d7-d0551da10abe/paper.files/image014.png相等的函数是(    )

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    B.http://picflow.koolearn.com/upload/2015-01/05/322c6e96-d724-4327-87d7-d0551da10abe/paper.files/image016.png

    C.http://picflow.koolearn.com/upload/2015-01/05/322c6e96-d724-4327-87d7-d0551da10abe/paper.files/image017.png

    D.http://picflow.koolearn.com/upload/2015-01/05/322c6e96-d724-4327-87d7-d0551da10abe/paper.files/image018.png

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  • 5http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image025.png在映射“ http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image026.png”的作用下的象是 http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image027.png,则在映射 http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image026.png作用下点 http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image028.png的原象是(   )       

    A.http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image029.png

    B.http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image030.png

    C.http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image031.png

    D.http://picflow.koolearn.com/upload/2012-11/13/492c3399-6c30-4d2a-ad71-5b766fa61ab5/paper.files/image032.png

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    C.http://picflow.koolearn.com/upload/2010-11/30/5725c6a2-130d-47ed-b33b-2a0a8eb4993a/paper.files/image023.gif

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    B.4

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