• 2021-04-14
    ,则的初值为? 0|不存在|1
    |-1
  • -1

    举一反三

    内容

    • 0

      [img src="http://edu-image.nosdn.127.net/08446072FAF419F6F5FB52568347381A.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100"][img src="http://edu-image.nosdn.127.net/950BA54637600A69A19C15A66AC36500.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100"] A: -4 B: +2 C: -1 D: -2

    • 1

      <img src="http://edu-image.nosdn.127.net/E899D297FE26C90E7FA982530DBDFC86.jpg?imageView&thumbnail=520x520&quality=100" />? 3|10|5|20

    • 2

      &#91;img src="http://edu-image.nosdn.127.net/C2E222B9B69051B791D85D50DD8FFB80.bmp?imageView&type=jpeg&thumbnail=890x0&quality=100"&#93; A: -1 B: 1 C: 2 D: 0

    • 3

      下列矩阵,哪一个是正交矩阵( ) 未知类型:{'options': ['&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_e3bcbe32-bf4f-4dd7-87eb-435166d4a694.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2dd5a805-5f17-4578-950f-b0e99cb4ace5.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_fb404ce8-29fb-4a21-9f66-2e1cc1e8e6b2.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_6238ef9e-3ec5-4c01-8429-4fbbb82bc5ff.png"&#93;'], 'type': 102}

    • 4

      设某种气体的分子速率分布函数为f(v),则速率在v1-v2区间内的分子平均速率为 未知类型:{'options': ['&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_4c30e9fe-5d04-4fc8-9957-2805655c8cf0.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_e46a2d3c-c302-4e0e-b7f1-dbda05263391.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_236231d7-a42e-4a27-ad17-4fa25ffa0243.png"&#93;', '&#91;img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_aa7899be-ed45-4d9c-a3c7-785ff01d6664.png"&#93;'], 'type': 102}