解下列矩阵方程：[tex=4.786x1.143]SBrLCVZb0oIRk0NSteMVIg==[/tex], 其中[tex=9.357x3.643]QN0fTQbn6M33pU3gx/S2sskwPlrKAzoJ8mdYiTYC7tGO8szMd8p+2cNkEYkSMjdsANbknV+iJQh+J809zadp79g509gaMWeT6/svoAyzdUJEeD0/oHbgF3bAj/jVoWDM[/tex], [tex=7.071x3.643]DgXZT9CtCPAglTYwc4pEdTYIay0w+N644riaOQUVnBefFJCJvM3AhWpg9OHZYI3VXkBhQERag/69moKfOrghzSp3wnxIh7EjbNliO65dRLk=[/tex]
举一反三
- 求矩阵方程[tex=4.786x1.143]H9S8z2blJXaVphQETw95Fg==[/tex]，其中[tex=9.357x3.643]QN0fTQbn6M33pU3gx/S2sskwPlrKAzoJ8mdYiTYC7tGO8szMd8p+2cNkEYkSMjdsANbknV+iJQh+J809zadp79g509gaMWeT6/svoAyzdUJEeD0/oHbgF3bAj/jVoWDM[/tex]，[tex=7.071x3.643]DgXZT9CtCPAglTYwc4pEdaW9CmkkN7KSp7oXBK1jNeVVp3uIDYR9ryBYepwcyLDiivkA6raYMPp/oSHjfyBBw3StMI4KYC8c8tgVzNWxNFc=[/tex]。
- >>>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']
- 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}
- 【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=
- 假设“☆”是一种新的运算，若3☆2=3×4，6☆3=6×7×8，x☆4=840(x＞0)，那么x等于： A: 2 B: 3 C: 4 D: 5 E: 6 F: 7 G: 8 H: 9