用正交变换法化二次型[tex=6.357x1.286]XgkzVMQcmezAgMktco84l9HpzRqCM68paKH6VDvb8st60n6/T0O261eE93rdG8ud[/tex][tex=16.429x1.286]pk0sD5sfXEBqeA5T3Tvl7LDsvvqVnHk5O9BeYWvggLM4AUDsNd/DJHl5jKHApsbC3rUbVpwNziTWDzXS+lJS688RToaZcPRwUdu00sKGmxpl/pvWDyn9IQnkgQqgTtKe[/tex]为标准形，并写出所用的正交变换。
举一反三
- 【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=
- >>>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}
- 用正交变换法化二次型[tex=7.429x1.286]XgkzVMQcmezAgMktco84l9HpzRqCM68paKH6VDvb8ss5CM5gv6j2HOxvU5s6ArRi[/tex][tex=10.5x1.286]k3VZqVoJSMR8mi+Yc5i2b7soD5ZoereED4zPwTahrJOrEL0MvpGB2eawoUE3hslz[/tex]为标准形，并写出所用的正交变换。
- \(二次型f（x）=x^{T}\begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{bmatrix}x的秩为\)