已知序列[img=166x98]1803a7cfc985124.png[/img],[img=186x98]1803a7cfd8926a0.png[/img],则[img=116x34]1803a7cfe4bb25a.png[/img]12点的圆周卷积为 ( )。
A: {-2,0,2,3,4,4,2,0,-2,3,-4,-3}
B: {-2,0,2,3,4,4,2,0,-2,-4,-4,-3}
C: {-2,0,3,3,4,4,2,0,-2,-4,-4,-2}
D: {-1,0,2,3,4,4,2,0,-2,-4,-4,-3}
A: {-2,0,2,3,4,4,2,0,-2,3,-4,-3}
B: {-2,0,2,3,4,4,2,0,-2,-4,-4,-3}
C: {-2,0,3,3,4,4,2,0,-2,-4,-4,-2}
D: {-1,0,2,3,4,4,2,0,-2,-4,-4,-3}
举一反三
- 已知序列[img=166x98]18034e568823a5a.png[/img],[img=186x98]18034e56992b59f.png[/img],则[img=116x34]18034e56a4b2910.png[/img]12点的圆周卷积为 ( )。 A: {-2,0,2,3,4,4,2,0,-2,3,-4,-3} B: {-2,0,2,3,4,4,2,0,-2,-4,-4,-3} C: {-2,0,3,3,4,4,2,0,-2,-4,-4,-2} D: {-1,0,2,3,4,4,2,0,-2,-4,-4,-3}
- 【单选题】如图示代码,下面哪个是正确的输出结果 A. 0 1 2 3 4 5 B. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 C. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 D. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
- 【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]
- 羊的齿式为 A: 2(0 0 3 0/ 4 0 3 0)=20 B: 2(0 0 3 3/ 4 0 3 3)=32 C: 2(4 0 3 0/ 4 0 3 0)=28 D: 2(4 0 3 3/ 4 0 3 3)=40
- 矩阵[img=117x63]18034e621c98abd.png[/img]的三个特征值是( ). A: 1, 4, 0 B: 2, 3 , 0 C: 2, 4, 0 D: 2, 4, -1