【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]
【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
【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
阅读以下代码,x=[0 1 0 2 0 3 0 4];for k=1:8if x(k)==0 x(k)=k;elsex(k)=2*k+1;endend回答:x(2)=______ ,x(5)=______
阅读以下代码,x=[0 1 0 2 0 3 0 4];for k=1:8if x(k)==0 x(k)=k;elsex(k)=2*k+1;endend回答:x(2)=______ ,x(5)=______
Consider the following cryptosystem: K={A, B}, Pr(A)=2/3, Pr(B)=1/3; P={0, 1}, Pr(0)=3/5, Pr(1)=2/5; C={a, b}, EA(0)=a, EA(1)=b, EB(0)=b, EB(1)=a; Compute Pr(a)=_______ and Pr(0|a)=_________;
Consider the following cryptosystem: K={A, B}, Pr(A)=2/3, Pr(B)=1/3; P={0, 1}, Pr(0)=3/5, Pr(1)=2/5; C={a, b}, EA(0)=a, EA(1)=b, EB(0)=b, EB(1)=a; Compute Pr(a)=_______ and Pr(0|a)=_________;
下列向量组中,( )是线性无关向量组。 A: (1, 1, 0), (0, 2, 0), (0, 0, 3) B: (1, 2), (3, 0), (5, 1) C: (2, 6, 0), (3, 9, 0), (0, 0, 2) D: (1, 2), (--3, 0), (5, 1)
下列向量组中,( )是线性无关向量组。 A: (1, 1, 0), (0, 2, 0), (0, 0, 3) B: (1, 2), (3, 0), (5, 1) C: (2, 6, 0), (3, 9, 0), (0, 0, 2) D: (1, 2), (--3, 0), (5, 1)
【单选题】A=[2,3,2,1;1,2,2,1; 1,2,3,-2]; A1=sum(A>A(2,1)); A(2,:)=[]; A2=A.^2-4; (6.6分) A. A1 =[1 3 3 0]; A2 =[0 5 0 -3;-3 0 5 0]; B. A1 =[1 3 -3 0]; A2 =[0 -5 0 -3;-3 0 5 0]; C. A1 =[-1 3 3 0]; A2 =[0 -5 0 -3;-3 0 5 0]; D. A1 =[-1 3 3 0]; A2 =[0 5 0 3;-3 0 5 0];
【单选题】A=[2,3,2,1;1,2,2,1; 1,2,3,-2]; A1=sum(A>A(2,1)); A(2,:)=[]; A2=A.^2-4; (6.6分) A. A1 =[1 3 3 0]; A2 =[0 5 0 -3;-3 0 5 0]; B. A1 =[1 3 -3 0]; A2 =[0 -5 0 -3;-3 0 5 0]; C. A1 =[-1 3 3 0]; A2 =[0 -5 0 -3;-3 0 5 0]; D. A1 =[-1 3 3 0]; A2 =[0 5 0 3;-3 0 5 0];
RLC串联电路中,()属于容性电路。 A: R=3Ω、XL=2Ω、XC=-1Ω B: R=3Ω、XL=0、XC=-2Ω C: R=3Ω、XL=1Ω、XC=-1Ω D: R=3Ω、XL=1Ω、XC=-2Ω
RLC串联电路中,()属于容性电路。 A: R=3Ω、XL=2Ω、XC=-1Ω B: R=3Ω、XL=0、XC=-2Ω C: R=3Ω、XL=1Ω、XC=-1Ω D: R=3Ω、XL=1Ω、XC=-2Ω
如图所示单元体的三个主应力为 A: σ1=30,σ2=0,σ3=-50 B: σ1=50,σ2=30,σ3=-50 C: σ1=50,σ2=0,σ3=-50 D: σ1=50,σ2=30,σ3=0
如图所示单元体的三个主应力为 A: σ1=30,σ2=0,σ3=-50 B: σ1=50,σ2=30,σ3=-50 C: σ1=50,σ2=0,σ3=-50 D: σ1=50,σ2=30,σ3=0
RLC串联电路中,属于容性电路的是( ) A: R=3Ω、XL=2Ω、XC=0 B: R=3Ω、XL=1Ω、XC=1Ω C: R=3Ω、XL=1Ω、XC=2Ω D: R=3Ω、XL=2Ω、XC=1Ω
RLC串联电路中,属于容性电路的是( ) A: R=3Ω、XL=2Ω、XC=0 B: R=3Ω、XL=1Ω、XC=1Ω C: R=3Ω、XL=1Ω、XC=2Ω D: R=3Ω、XL=2Ω、XC=1Ω
a=[1 2 0;1 0 5];b=[0 2 3;1 5 0];c=a&b,则c等于
a=[1 2 0;1 0 5];b=[0 2 3;1 5 0];c=a&b,则c等于