已知序列x[k]={4,3,2,1,-2; k=0,1,2,3,4},试求有限长序列x[(k-2)5]（ ）。
A: {4,-2,1,2,3; k=-4,-3,-2,-1,0}
B: {1,-2,4,3,2; k=-4,-3,-2,-1,0}
C: {4,-2,1,2,3; k=0,1,2,3,4}
D: {1,-2,4,3,2; k=0,1,2,3,4}
A: {4,-2,1,2,3; k=-4,-3,-2,-1,0}
B: {1,-2,4,3,2; k=-4,-3,-2,-1,0}
C: {4,-2,1,2,3; k=0,1,2,3,4}
D: {1,-2,4,3,2; k=0,1,2,3,4}
举一反三
- 已知序列x[k]={4,3,2,1,-2; k=0,1,2,3,4},则有限长序列x[(5-k)5]为（ ）。 A: {1,2,3,4,-2; k=0,1,2,3,4} B: {1,-2,4,3,2; k=0,1,2,3,4} C: {4,-2,1,2,3; k=0,1,2,3,4} D: {4,-2,1,2,3; k=-4,-3,-2,-1,0}
- 【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
- 下面代码的输出结果是() vlist = list(range(5)) print() A: [0, 1, 2, 3, 4] B: 0;1;2;3;4; C: 0,1,2,3,4, D: 0 1 2 3 4
- 下列程序段的执行结果为( )。 a=5 For k=1 To 0 a=a * k Next k Print k；a A: 2 2 B: 4 3 C: 4 2 D: 3 2
- 【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]