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]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}
- 【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
- 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
- 以下对二维数组a初始化正确的语句是_。 A: int a[2][ ]={{0 , 1 , 2}, {3 , 4 , 5}}; B: int a[ ][3]={{0, 1, 2}, {3, 4, 5}}; C: int a[2][4]={{0, 1 , 2}, {3 , 4}, {5}} D: int a[ ][3]={{0, 1, 2}, { }, {3, 4}};
内容
- 0
求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 1
下面变量中哪一个可以表示2*3的二维列表? A: A = [[1, 2, 0],[3, -1, 4]] B: A = [[1, 2],[3, 4], [0, 8]] C: A = [[1, 2, 0] [3, -1, 4]] D: A = {[1, 2, 0],[3, -1, 4]}
- 2
range(5)表示的范围是_________。 A: [0, 1, 2, 3] B: [1, 2, 3, 4] C: [0, 1, 2, 3, 4] D: [1, 2, 3, 4, 5]
- 3
下列各数中积为正的是(). A: 2×3×5×(-4) B: 2×(-3)×(-4)×(-3) C: (-2)×0×(-4)×(-5) D: (-2)×(-3)×(-4)×(-5)
- 4
【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]