用初等变换求矩阵[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]的逆矩阵[tex=1.714x1.214]ehC1Fy05fIHTeRCJHyodYA==[/tex]，其中[tex=9.357x3.643]QN0fTQbn6M33pU3gx/S2skBf9r/jVKLZ7SYtu+2BgAGoXeCNmbjLSv6XuoZHCLh1+PA4Fjxgf9uDW9pKd4Ni/gioTZCIDvRotEI3NYLBxRhOvfIfTEciMevgO3Ne8jbS[/tex]

2022-06-30

用初等变换求矩阵[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]的逆矩阵[tex=1.714x1.214]ehC1Fy05fIHTeRCJHyodYA==[/tex]，其中[tex=9.357x3.643]QN0fTQbn6M33pU3gx/S2skBf9r/jVKLZ7SYtu+2BgAGoXeCNmbjLSv6XuoZHCLh1+PA4Fjxgf9uDW9pKd4Ni/gioTZCIDvRotEI3NYLBxRhOvfIfTEciMevgO3Ne8jbS[/tex]

答案：

解 [tex=31.143x3.643]M+fil2g25GYGpFfRH+HE9skdHXLqp1vLbyFIWo1WZfJvnoGhf6Xqpu9Eap8XYhP5dmFueDOADoH9rSQxCnbG4rfugT5ErONcuk9XGXXJe9Qz7A24b9+fss7KPd5x25Vxk6Lhi9jm9VADvBHU+sb7PSTu8P/NDdKyaZNONJBRHKpod+BwSHJrnoGaS3fp3OpNrccYYSDEvdCm6ezPXapAdmACPW2U0IiaVLLgaCclXv2sdu1vK2E6AXstvO6z/sdJShv4yoKWOXLvLr/XMPzpNiJzzyAv+9QKeIFAW/9YuuH4hMvwB7qL4yMHfhan5B/JfRC9b/0TVS92TpPR7s+QeR+poclVi+PNCHZPiWwlNAx/7lyjlrVH/eQ+jD5d6hPe2uKzhKT4XZDKEitYDPBG9A==[/tex][tex=26.5x3.643]jcCMHflCR8OS9TosV6N5vPwfsGmfzQoidJZREYQuTRvMNWx6pm6fBB9utqSQ0Ar/3oIXb9BR4SWMIz9MGpUxz3ql1Yv1ciR2x6KOtoqhFfZuDjXqxUumTtm+1EoGcBCH+5TaijrttmEMmhnuVW3kmnoK7i4/Rfl36ccnUH58GL76vq26jAahjOm05covo2iUu61hWJwjtUbpTMMLJGTxl0nsq3PJ6i0v/JRjiAmMgRL4A1JG6BeiRh1umr96C2opcnWDVuy2aK7qSX4NDMDlMYQro9ApwJOyhY4M77SayyazUuIwk+dKed3D9PlG5B2+YTywN/0lsBTTSIkhA/awOw==[/tex][tex=29.5x5.214]5yAunLq6eo1Om4MmlwqxZmfBHlpAzHQRUjulKZiuZizWlADZOHOerRNBQAZC/cK9LF9nXRIgyW22mL/AjHBE9IedmRf41hyI5db5iDaJwQgQEJFTgV5+yXMLcYeXPis+wuK1WsZGvM4PkI8JJJT+8+kWBXoTX45JpVs2wO5YOsTayQ0wb1AbUxEpB/h1sUgH9uiw7KB3nMcy5n9ihsRgMu5wMg2WYX92fEGohfiO63G2cG7fjnHVJTlTKZSpz/Vxg/F5StejI1xmUEYGn+wkt458ejqyeFmFrU+rUPewK7zPhP67VFeXg8JCmttD5iqt0c95nnWrxp/FULOfXM3QXY31R1G9YfGIGqKPtKPOCScol/CkgQwph/L7IQkPy7rtRsv3GPNuHGWi1+8e9KILvUxmw0m9np768fDonvoGQXM=[/tex][tex=34.214x7.643]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[/tex][tex=13.429x3.643]ruRyBfYK7eTrReEzZgxPjO+THJV/56xBwSG9L8vy3uysxSBWBfZru8SBH7i8hTCW7L2sfJ8rpoh2EvSM79nhMdyB2/gqoHePJL9P2V0BNUsbRq3ng7OHxjnLmGUXpHI09ROx8vA5zUGM1/g2eA9yHBkHPuP95vsqqtZl1yTV57s=[/tex]。

举一反三

内容

0
若 3 阶矩阵[tex=9.357x3.643]QN0fTQbn6M33pU3gx/S2shFzvXJob3IOOSqx/0F5epsILC/jdm/HndzGl6LCvnX6tqfObR9aTFthI4K6nhOCo+dpKW2NGPJH6yMO8vIT3Z+zt1SrzkEg01zRRgn894sH[/tex]可逆，[tex=1.143x1.071]XvrkUQF0cBebo2gLcsAmAA==[/tex]是[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]的伴随矩阵，则[tex=1.143x1.071]XvrkUQF0cBebo2gLcsAmAA==[/tex]也是 3 阶可逆矩阵，那么[tex=3.857x1.571]fQBxPqr3vcyIR5D8DNIS2l4rw8ZgAwg29vil+YekGEM=[/tex][input=type:blank,size:4][/input]。
1
设矩阵 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]与[tex=0.786x1.0]sHo1pKm+gjxjcUAJjHrarQ==[/tex] 相似, 其中[tex=8.643x3.643]3BT1BgBZQ5uJXxD5dg+w26muwh1xN1sRXO8Q3eF5f+iTpB6kD/3/7F/Sewwa3hxWs7TCQWFyZq0QSUW2LGcSxj3jay92Ev0sXUjwbpJxe2w84vpk6B1wjRlgxeXY7DUa[/tex], 已知矩阵 [tex=0.786x1.0]sHo1pKm+gjxjcUAJjHrarQ==[/tex]有特征值 1,2,3, 则 [tex=1.357x0.786]C5gMMrS05DsgTY0BSnf1fg==[/tex] A: 4 B: -3 C: -4 D: 3
2
set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为？ A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
3
【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
4
>>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']