作业帮matlab 分段函数图象
来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/12 06:32:34
matlab 分段函数图象
怎样写怎么matlab的分段函数,画出这样的图形
怎样写怎么matlab的分段函数,画出这样的图形
x1 = -4:0.1:-2*pi/3;
x2 = -2*pi/3:0.1:-pi/3;
x3 = -pi/3:0.1:pi/3;
x4 = pi/3:0.1:2*pi/3;
x5 = 2*pi/3:0.1:4;
y1 = zeros(size(x1));
y3 = zeros(size(x3));
y5 = zeros(size(x5));
y2 = 2*x2/pi+5/3;
y4 = -2*x4/pi+5/3;
plot(x1,y1,'b',x2,y2,'b',x3,y3,'b',x4,y4,'b',x5,y5,'b')
再问：
为啥图形左右不对称呢？？
再答： 步长0.1较大，改为比如0.01 x1 = -4:0.01:-2*pi/3; x2 = -2*pi/3:0.01:-pi/3; x3 = -pi/3:0.01:pi/3; x4 = pi/3:0.01:2*pi/3; x5 = 2*pi/3:0.01:4; y1 = zeros(size(x1)); y3 = zeros(size(x3)); y5 = zeros(size(x5)); y2 = 2*x2/pi+5/3; y4 = -2*x4/pi+5/3; plot(x1,y1,'b',x2,y2,'b',x3,y3,'b',x4,y4,'b',x5,y5,'b')
x2 = -2*pi/3:0.1:-pi/3;
x3 = -pi/3:0.1:pi/3;
x4 = pi/3:0.1:2*pi/3;
x5 = 2*pi/3:0.1:4;
y1 = zeros(size(x1));
y3 = zeros(size(x3));
y5 = zeros(size(x5));
y2 = 2*x2/pi+5/3;
y4 = -2*x4/pi+5/3;
plot(x1,y1,'b',x2,y2,'b',x3,y3,'b',x4,y4,'b',x5,y5,'b')
再问：
为啥图形左右不对称呢？？再答： 步长0.1较大，改为比如0.01 x1 = -4:0.01:-2*pi/3; x2 = -2*pi/3:0.01:-pi/3; x3 = -pi/3:0.01:pi/3; x4 = pi/3:0.01:2*pi/3; x5 = 2*pi/3:0.01:4; y1 = zeros(size(x1)); y3 = zeros(size(x3)); y5 = zeros(size(x5)); y2 = 2*x2/pi+5/3; y4 = -2*x4/pi+5/3; plot(x1,y1,'b',x2,y2,'b',x3,y3,'b',x4,y4,'b',x5,y5,'b')