我用matlab画图,怎么老出误!为什么?x1=0:0.01:10;x2=10:0.01:25;x3=25:0.01:30;y1=0*x1;y2=1+0*x2;y3=-1/255*(x+5)*(x-25); x=[x1,x2,x3];y=[y1,y2,y3]; plot(x,y);axis([0 25 -0.5 1.5])抱歉,函数发错了,应是这个的.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 23:57:19
![我用matlab画图,怎么老出误!为什么?x1=0:0.01:10;x2=10:0.01:25;x3=25:0.01:30;y1=0*x1;y2=1+0*x2;y3=-1/255*(x+5)*(x-25); x=[x1,x2,x3];y=[y1,y2,y3]; plot(x,y);axis([0 25 -0.5 1.5])抱歉,函数发错了,应是这个的.](/uploads/image/z/7103263-31-3.jpg?t=%E6%88%91%E7%94%A8matlab%E7%94%BB%E5%9B%BE%2C%E6%80%8E%E4%B9%88%E8%80%81%E5%87%BA%E8%AF%AF%21%E4%B8%BA%E4%BB%80%E4%B9%88%3Fx1%3D0%3A0.01%3A10%3Bx2%3D10%3A0.01%3A25%3Bx3%3D25%3A0.01%3A30%3By1%3D0%2Ax1%3By2%3D1%2B0%2Ax2%3By3%3D-1%2F255%2A%EF%BC%88x%2B5%29%2A%28x-25%29%3B+x%3D%5Bx1%2Cx2%2Cx3%5D%3By%3D%5By1%2Cy2%2Cy3%5D%3B+plot%28x%2Cy%29%3Baxis%28%5B0+25+-0.5+1.5%5D%29%E6%8A%B1%E6%AD%89%2C%E5%87%BD%E6%95%B0%E5%8F%91%E9%94%99%E4%BA%86%2C%E5%BA%94%E6%98%AF%E8%BF%99%E4%B8%AA%E7%9A%84.)
我用matlab画图,怎么老出误!为什么?x1=0:0.01:10;x2=10:0.01:25;x3=25:0.01:30;y1=0*x1;y2=1+0*x2;y3=-1/255*(x+5)*(x-25); x=[x1,x2,x3];y=[y1,y2,y3]; plot(x,y);axis([0 25 -0.5 1.5])抱歉,函数发错了,应是这个的.
我用matlab画图,怎么老出误!为什么?
x1=0:0.01:10;
x2=10:0.01:25;
x3=25:0.01:30;
y1=0*x1;
y2=1+0*x2;
y3=-1/255*(x+5)*(x-25);
x=[x1,x2,x3];
y=[y1,y2,y3];
plot(x,y);
axis([0 25 -0.5 1.5])
抱歉,函数发错了,应是这个的.
我用matlab画图,怎么老出误!为什么?x1=0:0.01:10;x2=10:0.01:25;x3=25:0.01:30;y1=0*x1;y2=1+0*x2;y3=-1/255*(x+5)*(x-25); x=[x1,x2,x3];y=[y1,y2,y3]; plot(x,y);axis([0 25 -0.5 1.5])抱歉,函数发错了,应是这个的.
按你的程序来,修改如下:
x1=0:0.01:10;
x2=10:0.01:25;
x3=25:0.01:30;
y1(1:length(x1))=0*x1;
y2(1:length(x2))=ones(1,length(x2))+0*x2;
y3(1:length(x3))=-1/255*(x3+5*ones(1,length(x3))).*(x3-25*ones(1,length(x3))); !这个自变量应该是x3?
x=[x1,x2,x3];
y=[y1,y2,y3];
plot(x,y);
axis([0 25 -0.5 1.5])