• 2022-06-30
    对于任意三个向量[tex=1.429x1.214]HCTRLtzxkeBZo1HKwKR3/g==[/tex]与[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex]判断下列各式是否成立:[tex=6.143x1.5]pBA8cWt6zJ5YRDFKAkbwRfUUadkvIoEu/b9QxIAyKraa5+ukObczTdtBDAe/6IR1[/tex].
  • 不成立.例如:[tex=12.5x1.5]KDXo0VPLWnLLkuB0xtVlIRPFLnqDHM1n1yDaJEy3u/qfRfY2gLHM49nF0056WiZ+z760j/z2ElTzJ5h7LDREew==[/tex].

    举一反三

    内容

    • 0

      判断下列命题是否为真:(1)[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex](2)[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex](3)[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex](4)[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex](5)[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex](6)[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex](7)若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex],则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex](8)若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex],则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]

    • 1

      设[tex=1.429x1.214]HCTRLtzxkeBZo1HKwKR3/g==[/tex]为非零向量,证明[tex=9.071x1.5]VOquS4VsOHaZ1O+UhatkZBu/NMSNJib9u0CmqOq2fFSYRBqjIt/0exTju8dbsaMhcCwzy92V8PLIj/Hs4OiV9g==[/tex].

    • 2

      找出不全为零的三个有理数[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex](即[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex]中至少有一 个不是 0),使得[tex=18.643x1.357]KyXXoTQg7oYN9VhCCaNIRxTyt0RSmAxNq0orMlKH1Luyp7BE5JHnaIjEvpSd3+kP[/tex]

    • 3

      7个变量出现在计算机程序的循环中。这些变量以及必须保存它们的计算步骤是: [tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]:步骤1~6;[tex=0.643x0.786]cnVwa8IjZzNSEmAUXJ8VCQ==[/tex]:步骤2;[tex=0.5x0.786]GWrvJtODhYOBa2bpkSPSFQ==[/tex]:步骤2~4;[tex=0.786x0.786]44SGfA2gQ2VZlXa1QKZD0Q==[/tex]:步骤1,3和5;[tex=0.571x0.786]c5VsltFnl9nO0qB/vNKOWA==[/tex]:步骤1和6;[tex=0.5x1.0]iwXm0SwS+lfupyC0IyH8yQ==[/tex]:步骤3~6;以及[tex=0.5x0.786]gdMkE6SnyZedYLxpUxdkaQ==[/tex]:步骤4和5。在执行期间需要多少个不同的变址寄存器来保存这些变量?

    • 4

      判断半径大小并说明原因:(1)[tex=1.071x1.0]ZIxpATrL2EWTpYe3CKPlpg==[/tex]与 [tex=1.357x1.0]LO7mudz7++HOXb8YDQ1UtQ==[/tex](2) [tex=1.286x1.0]nOvFdt4hpTubfX23eRvSvg==[/tex]与[tex=1.071x1.0]Kr2c9X1cZ4El5JSNMoM0/w==[/tex](3) [tex=1.214x1.0]Q1mlMfKWwfAuQJLgzt2cVQ==[/tex]与[tex=1.357x1.0]ovKrdUm5wnQSTfl9He3wzA==[/tex](4)[tex=1.143x1.0]8nY7k4VEnlDIEx7o05iMhQ==[/tex]与[tex=1.357x1.214]in11+JirBe0MeyXDnVwAww==[/tex](5)[tex=1.643x1.214]cIgqspnlK9Ra13rNdyZhHQ==[/tex]与[tex=0.643x1.0]jLbabU9pW65GUKemsNBJWw==[/tex](6)[tex=1.929x1.143]CtrLAecFBVyCnMYbqB02Ag==[/tex]与[tex=2.0x1.214]2cEIifUWf5oYRzhjCpTV6A==[/tex](7)[tex=2.214x1.214]OdTls2gllRl/Z1zy0+35/g==[/tex]与[tex=2.071x1.214]YDXlUgl4Yvd6QFjcd0Ns2Q==[/tex](8)[tex=2.071x1.214]QvCjZKA7OQkNYccCl0MVgQ==[/tex]与[tex=1.929x1.214]GDfkuEdqfBLP2oRgr+Wojw==[/tex]