设y=kx+b,当x=1时,y=1:当x=2时,y=4,那么( ) A: k=3,b=-2 B: k=-2,b=3 C: k=-3,b=2 D: k=-3,b=-2
设y=kx+b,当x=1时,y=1:当x=2时,y=4,那么( ) A: k=3,b=-2 B: k=-2,b=3 C: k=-3,b=2 D: k=-3,b=-2
设x=2,y=3,z=4,k=5,则表达式“x 2
设x=2,y=3,z=4,k=5,则表达式“x 2
应用Matlab软件计算行列式[img=110x88]17da5d7b00219d6.png[/img]为( ). A: x^2 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 B: x^3 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 C: x^4 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 D: x^5- 6*x^2*y^2 + 8*x*y^3 - 3*y^4
应用Matlab软件计算行列式[img=110x88]17da5d7b00219d6.png[/img]为( ). A: x^2 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 B: x^3 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 C: x^4 - 6*x^2*y^2 + 8*x*y^3 - 3*y^4 D: x^5- 6*x^2*y^2 + 8*x*y^3 - 3*y^4
如下C程序的输出是什么?#include [stdio.h]void Func1 (int x, int y);void Func2 (int *x, int *y); int main() { int x = 3; int y = 4;Func1 (x, y); printf ("x = %d, y = %d\n", x, y);Func2(&x, &y); printf ("x = %d, y = %d\n", x, y);} void Func1 (int x, int y) { x = x + y; y = x - y; x = x - y; printf ("x = %d, y = %d\n", x, y);} void Func2 (int *x, int *y) { *x = *x + *y; *y = *x - *y; *x = *x - *y;;} A: x = 3, y = 4x = 3, y = 4x = 3, y = 4 B: x = 4, y = 3x = 4, y = 3x = 4, y = 3 C: x = 3, y = 4x = 3, y = 4x = 4, y = 3 D: x = 4, y = 3x = 3, y = 4x = 4, y = 3
如下C程序的输出是什么?#include [stdio.h]void Func1 (int x, int y);void Func2 (int *x, int *y); int main() { int x = 3; int y = 4;Func1 (x, y); printf ("x = %d, y = %d\n", x, y);Func2(&x, &y); printf ("x = %d, y = %d\n", x, y);} void Func1 (int x, int y) { x = x + y; y = x - y; x = x - y; printf ("x = %d, y = %d\n", x, y);} void Func2 (int *x, int *y) { *x = *x + *y; *y = *x - *y; *x = *x - *y;;} A: x = 3, y = 4x = 3, y = 4x = 3, y = 4 B: x = 4, y = 3x = 4, y = 3x = 4, y = 3 C: x = 3, y = 4x = 3, y = 4x = 4, y = 3 D: x = 4, y = 3x = 3, y = 4x = 4, y = 3
设随机变量X与Y相互独立且服从同一分布:P{X=k}=P{Y=k}=(k+1)/3(k=0,1),则概率P{X=Y}的值为()。 A: 1/3 B: 4/9 C: 5/9 D: 2/3
设随机变量X与Y相互独立且服从同一分布:P{X=k}=P{Y=k}=(k+1)/3(k=0,1),则概率P{X=Y}的值为()。 A: 1/3 B: 4/9 C: 5/9 D: 2/3
执行以下语句的结果为______。 int x=3,y;int*px=&x;y=*px++; A: x=3,y=4 B: x=3,y=3 C: x=4,y=4 D: x=3,y不知
执行以下语句的结果为______。 int x=3,y;int*px=&x;y=*px++; A: x=3,y=4 B: x=3,y=3 C: x=4,y=4 D: x=3,y不知
设矩阵,已知A的特征值是λ1=2,λ2=λ3=1,则()。 A: x=-4,y=3 B: x=-4,y=-3 C: x=4,y=-3 D: x=4,y=3
设矩阵,已知A的特征值是λ1=2,λ2=λ3=1,则()。 A: x=-4,y=3 B: x=-4,y=-3 C: x=4,y=-3 D: x=4,y=3
程序如下:intx=3,y;int*px=&x;y=*px++;则如下描述中正确的是:() A: x=3;y=4 B: x=3;y=3 C: x=4;y=4 D: x=3;y不确定
程序如下:intx=3,y;int*px=&x;y=*px++;则如下描述中正确的是:() A: x=3;y=4 B: x=3;y=3 C: x=4;y=4 D: x=3;y不确定
已知int x=3,y=4;,写出下列表达式的值 (1) (x,y) (2) x>y?x:y (3) x?y:x (4) (x>y)?(y>=2)?1:2:(y>x)?x:y
已知int x=3,y=4;,写出下列表达式的值 (1) (x,y) (2) x>y?x:y (3) x?y:x (4) (x>y)?(y>=2)?1:2:(y>x)?x:y
已知3个点A(x,5),B(-2,y),C(1,1),若点C是线段AB的中点,则______. A: x=4,y=-3 B: x=0,y=3 C: x=0,y=-3 D: x=-4,y=-3 E: x=3,y=-4
已知3个点A(x,5),B(-2,y),C(1,1),若点C是线段AB的中点,则______. A: x=4,y=-3 B: x=0,y=3 C: x=0,y=-3 D: x=-4,y=-3 E: x=3,y=-4