应用斯托克斯 (Stokes) 定理证明[tex=8.5x2.643]cYBR5Xd23xgvMxSbDaqpMRIeGy0ESjnjStjpkCK+YbKGjOqP+aZyUrpnRbXh7B4sxoLy5okHYDNDaKIn3TXjJe/MSp2Z9sj2jNfcixTN2Rw=[/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]
- 中缀表达式23+((12*3-2)/4+34*5/7)+108/9对应的后缀表达式为( )。 A: 23 12 + 3 * 2 – 4 / 34 5 * 7 / + 108 9 / + B: 23 12 3 * 2 4 – / 34 5 * 7 / + + 108 9 / + C: 23 12 3 * 2 – 4 / 34 5 * 7 / + 108 9 / + + D: 23 12 3 * 2 – 4 / 34 5 * 7 / + + 108 9 / +
- 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
- 【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=