设随机变量(X,Y)的概率密度为f(x,y)={k(6-x-y),0
设随机变量(X,Y)的概率密度为f(x,y)={k(6-x-y),0
设随机变量(X,Y)的联合密度函数为f(x,y)=k(6-x-y),0<x<2,2<y<4.P(X+Y<4)=
设随机变量(X,Y)的联合密度函数为f(x,y)=k(6-x-y),0<x<2,2<y<4.P(X+Y<4)=
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0<x<2。 求 (1)系数k ; (2)P(X<1,Y<3)
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0<x<2。 求 (1)系数k ; (2)P(X<1,Y<3)
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0 (1) 1/8 (2) 3/8
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0 (1) 1/8 (2) 3/8
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0求(1)系数k ;[br][/br] (2)P(X<1,Y<3)。
设随机变量(X,Y)的联合密度函数为p(x,y)=k(6-x-y),0求(1)系数k ;[br][/br] (2)P(X<1,Y<3)。
执行以下语句后,结果是____。main(){ int a=2,b=4,c=6,x,y; y=(x=a+b,b+c); printf("y=%d,x=%d",y,x);} A: x=6,y=6 B: x=6,y=10 C: x=10,y=10 D: x=10,y=6
执行以下语句后,结果是____。main(){ int a=2,b=4,c=6,x,y; y=(x=a+b,b+c); printf("y=%d,x=%d",y,x);} A: x=6,y=6 B: x=6,y=10 C: x=10,y=10 D: x=10,y=6
函数f(x,y)=xy(6-x-y)的极值点是(). A: A(0,0) B: B(6,0) C: C(0,6) D: D(2,2)
函数f(x,y)=xy(6-x-y)的极值点是(). A: A(0,0) B: B(6,0) C: C(0,6) D: D(2,2)
int x = 1, y =6; A: x = 6 y = 0 B: x = 7 y = 0 C: x = 6 y = -1 D: x = 7 y = -1 E: Compilation fails.
int x = 1, y =6; A: x = 6 y = 0 B: x = 7 y = 0 C: x = 6 y = -1 D: x = 7 y = -1 E: Compilation fails.
【单选题】假设 int x=3,y=6; 则语句 printf("x=%d,y=%d",x,y); 的输出结果是()? A. 3,6 B. x=3,y=6 C. "x=3,y=6" D. x=3 y=6
【单选题】假设 int x=3,y=6; 则语句 printf("x=%d,y=%d",x,y); 的输出结果是()? A. 3,6 B. x=3,y=6 C. "x=3,y=6" D. x=3 y=6
哪个是如下代码的输出结果:(). double x = 5.5; int y = (int)x; System.out.println("x is " + x + " and y is " + y); A: x is 5 and y is 6 B: x is 6.0 and y is 6.0 C: x is 6 and y is 6 D: x is 5.5 and y is 5
哪个是如下代码的输出结果:(). double x = 5.5; int y = (int)x; System.out.println("x is " + x + " and y is " + y); A: x is 5 and y is 6 B: x is 6.0 and y is 6.0 C: x is 6 and y is 6 D: x is 5.5 and y is 5