证明:[tex=8.714x4.5]TIwZYBkNsy31H1RNd/OloM2TmNrSlpAfjlAr7+WTd5ADNcHGpQEX1Dpoi5LLqKb+n/YVb/dKYZCEoIx/Y3W3dNGGI3Ba/SqQRa7uUWcUtN+5idyYw+c0iwcg2iOg14lpwkntHXYN97ccioRDFs5HxA==[/tex]
举一反三
- 下列哪条语句是正确的( ) A: A=[1 2;3 4];B=[3;7];A.*B; B: A=cell(2,3);A(1,2)=[4;5]; C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end) D: x=-5:5;y=-5:5;z=x.*x-y.*y;surf(x,y,z);
- 【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]
- 17e0c39b09a63f9.png在作业本或答题纸上写出完整的解题过程,平台上完成以下选择题:(1)P{X=1,Y=0}; (2)P{Y=2};(3)P{X+Y<;2}. A: 5/28; 5/14; 2/7 B: 5/28; 5/28; 3/7 C: 5/56; 5/14; 2/7 D: 5/56; 5/28; 3/7
- 下列MATLAB语句运行有误的是() A: A=[1 2;3 4];B=[3;7];AB B: A=ones(3,3);A(1,2:3)=[4,5] C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end)>B D: x=-5:5;y=-5:5;z=xx-yy
- set1 = {x for x in range(10) if x%2!=0} set1.remove(1) print(set1) 以上代码的运行结果为? A: {1, 3, 5, 7, 9} B: {1, 3, 5, 7} C: {3, 5, 7, 9} D: {3, 5, 7}