• 2021-04-14 问题

    【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]

    【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]

  • 2022-05-30 问题

    分别指出由下列各组命题构成的“p或q”“p且q”“非p”形式的复合命题的真假.(1)p:4+3=7,q:5<4;(2)p:9是质数,q:8是12的约数;(3)p:1∈{1,2},q:{1,2};(4)p:={0},q:.

    分别指出由下列各组命题构成的“p或q”“p且q”“非p”形式的复合命题的真假.(1)p:4+3=7,q:5<4;(2)p:9是质数,q:8是12的约数;(3)p:1∈{1,2},q:{1,2};(4)p:={0},q:.

  • 2022-06-18 问题

    >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']

    >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']

  • 2022-05-27 问题

    在MATLAB中运行[d,p,q]=gcd(128,36),输出结果是 A: d=4, p=2, q=-8 B: d=4, p=2, q= -7 C: d=4, p=2, q= 8 D: d=4, p=2, q= 7

    在MATLAB中运行[d,p,q]=gcd(128,36),输出结果是 A: d=4, p=2, q=-8 B: d=4, p=2, q= -7 C: d=4, p=2, q= 8 D: d=4, p=2, q= 7

  • 2022-05-29 问题

    对下图所示的博弈收益矩阵,混合策略纳什均衡是:[img=326x211]18030d49426b3bb.png[/img] A: (p:1/4, q:3/4 B: (p:1, q:0) C: (p:1/3, q:2/3 D: (p:1/2, q:1/2)

    对下图所示的博弈收益矩阵,混合策略纳什均衡是:[img=326x211]18030d49426b3bb.png[/img] A: (p:1/4, q:3/4 B: (p:1, q:0) C: (p:1/3, q:2/3 D: (p:1/2, q:1/2)

  • 2021-04-14 问题

    【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=

    【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=

  • 2022-05-31 问题

    (1)p→q (2)┐q∨r (3)(┐p∨q)∧((p∧r)→p) (4)(q→r)∧(p→p) A: (1)和(2) B: (1)和(3) C: (2)和(3) D: (2)和(4)

    (1)p→q (2)┐q∨r (3)(┐p∨q)∧((p∧r)→p) (4)(q→r)∧(p→p) A: (1)和(2) B: (1)和(3) C: (2)和(3) D: (2)和(4)

  • 2022-06-16 问题

    设A,B为两个事件,且P(A)>;0,若P(AB)=1/3,P(A)=2/3,则P(B|A)=( ) A: 1/2 B: 1/9 C: 2/9 D: 4/9

    设A,B为两个事件,且P(A)>;0,若P(AB)=1/3,P(A)=2/3,则P(B|A)=( ) A: 1/2 B: 1/9 C: 2/9 D: 4/9

  • 2022-06-14 问题

    设DES加密算法中的一个S盒为: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111

    设DES加密算法中的一个S盒为: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111

  • 2022-06-06 问题

    For the integral $\int_0^{+\infty}\frac{dx}{(x^2+p^2)(x^2+q^2)}$, which of the following statements are CORRECT? A: $\frac{1}{q^2-p^2}[\frac{1}{p}-\frac{1}{q}]\frac{\pi}{2},p>0 \ q>0;$ B: $\frac{1}{q^2-p^2}[\frac{1}{q}+\frac{1}{p}]\frac{\pi}{2}, -p>0 \ -q>0;$ C: $\frac{1}{q^2-p^2}[\frac{1}{p}-\frac{1}{q}]\frac{\pi}{2}, p>0 \ -q>0;$ D: $\frac{1}{p^2-q^2}[\frac{1}{q}+\frac{1}{p}]\frac{\pi}{2}, -p>0 \ q>0.$

    For the integral $\int_0^{+\infty}\frac{dx}{(x^2+p^2)(x^2+q^2)}$, which of the following statements are CORRECT? A: $\frac{1}{q^2-p^2}[\frac{1}{p}-\frac{1}{q}]\frac{\pi}{2},p>0 \ q>0;$ B: $\frac{1}{q^2-p^2}[\frac{1}{q}+\frac{1}{p}]\frac{\pi}{2}, -p>0 \ -q>0;$ C: $\frac{1}{q^2-p^2}[\frac{1}{p}-\frac{1}{q}]\frac{\pi}{2}, p>0 \ -q>0;$ D: $\frac{1}{p^2-q^2}[\frac{1}{q}+\frac{1}{p}]\frac{\pi}{2}, -p>0 \ q>0.$

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