设矩阵 [tex=0.857x1.0]KGogyvwDAIJf/iL0H/9wjg==[/tex] 满足 [tex=13.214x1.143]nC0lOYQD60BBftI2FbYao6CbF1ALnx4BRlyWfFYZKe0=[/tex] ， 其中矩阵[tex=7.786x3.5]3BT1BgBZQ5uJXxD5dg+w2xTK9vs7uQA24QN5Zc8+9oY9l+kIfUsiDUE65FU1AxmZ8G81iH753MZKpnFe95ZjBHqD1vUW4kxkkKMk5Q/5L215mGWdL/1TiDZX2jXwP9CB[/tex] ，[tex=7.786x3.5]opqi7S5YyIUs5JQiNQr2vPDnPYpAQ4zy+Il9pvTrmIkCFDw6S+i4G0jN1hokuOKOwk09NVZ0M+ea0vazCHh+sDEPLeawPoUlVJD5gTCMNaoOGwOzP/5AOmwtSOQkILdl[/tex]， [tex=0.786x1.0]I/kNMtd8YcgkWCrgriW/hA==[/tex] 为 3 阶单位阵，求 [tex=0.857x1.0]KGogyvwDAIJf/iL0H/9wjg==[/tex] .
举一反三
- 以下程序段实现的输出是（）。for(i=0;i<;=9;i++)s[i]=i;for(i=9;i>;=0;i--)printf("%2d",s[i]);[/i][/i] A: 9 7 5 3 1 B: 1 3 5 7 9 C: 9 8 7 6 5 4 3 2 1 0 D: 0 1 2 3 4 5 6 7 8 9
- >>>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}
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]
- 【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=