以下程序的运行结果是s=2,t=3#include ;using namespace std;int main(){ int s=1,t=1,a=5,b=2; if (a>;0) s++; if (a>;b) t+=s; else if (a==b) t=5; else t=2*s; cout return 0;}
以下程序的运行结果是s=2,t=3#include ;using namespace std;int main(){ int s=1,t=1,a=5,b=2; if (a>;0) s++; if (a>;b) t+=s; else if (a==b) t=5; else t=2*s; cout return 0;}
函数 [img=197x96]1803dbfc46ca27a.png[/img]表示的曲面称为椭圆锥面,绘制这个曲面的程序是: A: s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2+y.^2);mesh(x,y,z) B: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a/a+y.^2/b/b);mesh(x, y, z) C: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a*a+y.^2/b*b);mesh(x, y, z) D: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x^2/a/a+y^2/b/b);mesh(x, y, z);
函数 [img=197x96]1803dbfc46ca27a.png[/img]表示的曲面称为椭圆锥面,绘制这个曲面的程序是: A: s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2+y.^2);mesh(x,y,z) B: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a/a+y.^2/b/b);mesh(x, y, z) C: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a*a+y.^2/b*b);mesh(x, y, z) D: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x^2/a/a+y^2/b/b);mesh(x, y, z);
t=0:1:5产生行向量t,各元素为0、1、2、3、4、5
t=0:1:5产生行向量t,各元素为0、1、2、3、4、5
已知T(1)=9,T(2)=8,T(0)=5,Total=T(1)+T(2)+T(0),则Total=()。 A: 9 B: 22 C: 8 D: 5
已知T(1)=9,T(2)=8,T(0)=5,Total=T(1)+T(2)+T(0),则Total=()。 A: 9 B: 22 C: 8 D: 5
已知T(1)=9,T(2)=8,T(0)=5,Total=T(1)+T(2)+T(0),则Total=()。
已知T(1)=9,T(2)=8,T(0)=5,Total=T(1)+T(2)+T(0),则Total=()。
请阅读下面程序: main( ) { int s ,t,a,b; scanf(“%d,%d”,&a,&b); s=1; t=1; if(a>0) s=s+1; if(a>b) t=s+t; else if(a= =b) t=5; else t=2*s; printf(“s=%d,t=%d”,s,t); } 为使输出结果s=1,t=5,输入量a和b应满足条件是
请阅读下面程序: main( ) { int s ,t,a,b; scanf(“%d,%d”,&a,&b); s=1; t=1; if(a>0) s=s+1; if(a>b) t=s+t; else if(a= =b) t=5; else t=2*s; printf(“s=%d,t=%d”,s,t); } 为使输出结果s=1,t=5,输入量a和b应满足条件是
下列Matlab代码,能求解微分方程 y'(t) = 2*t , y(0) = 1的是( ) A: tspan = [0 5];<br> y0 = 0;<br> [t,y] = ode45(@(t,y) 2*t, tspan, y0); B: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*t, tspan, y0); C: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*y, tspan, y0); D: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*t*y, tspan, y0);
下列Matlab代码,能求解微分方程 y'(t) = 2*t , y(0) = 1的是( ) A: tspan = [0 5];<br> y0 = 0;<br> [t,y] = ode45(@(t,y) 2*t, tspan, y0); B: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*t, tspan, y0); C: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*y, tspan, y0); D: tspan = [0 5];<br>y0 = 1;<br>[t,y] = ode45(@(t,y) 2*t*y, tspan, y0);
请阅读以下程序片段,a=-1,b=-1,t输出的结果是___________。 s=1; t=1; if(a>0)s=s+1; if(a>b)t=s+t; elseif(a==b)t=5; elset=2*s; printf(“%d”,t);
请阅读以下程序片段,a=-1,b=-1,t输出的结果是___________。 s=1; t=1; if(a>0)s=s+1; if(a>b)t=s+t; elseif(a==b)t=5; elset=2*s; printf(“%d”,t);
s=”hello”,t=”world”,s+=t,则s为________________,s[-1]为________,s[2:5]为_____________,s[::3]为____________,s[-2::-1]为____________________
s=”hello”,t=”world”,s+=t,则s为________________,s[-1]为________,s[2:5]为_____________,s[::3]为____________,s[-2::-1]为____________________
产生周期为1的三角波信号,正确的代码是 A: t=0:1/1000:5;y=sawtooth(2*pi*t,0.5);号,正确的代码是 B: t=0:1/1000:5;y=sawtooth(2*pi*10*t,0.5);,正确的代码是 C: t=0:1/1000:5;y=square(2*pi*t,0.5);� D: t=0:1/1000:5;y=square(2*pi*10*t,0.5);
产生周期为1的三角波信号,正确的代码是 A: t=0:1/1000:5;y=sawtooth(2*pi*t,0.5);号,正确的代码是 B: t=0:1/1000:5;y=sawtooth(2*pi*10*t,0.5);,正确的代码是 C: t=0:1/1000:5;y=square(2*pi*t,0.5);� D: t=0:1/1000:5;y=square(2*pi*10*t,0.5);