矩形脉冲信号：rectpuls(t, width) 周期矩形脉冲信号：square(t, DUTY) 三角波脉冲信号：tripuls(t, width, skew) 周期三角波信号：sawtooth(t, width) 单位阶跃信号：y=(t>=0)这五个信号的代码

好的，以下是这五个信号的 MATLAB 代码：

1. 矩形脉冲信号：`rectpuls(t, width)`

t = -5:0.1:5;
width = 2;
y = rectpuls(t,width);
plot(t,y);

2. 周期矩形脉冲信号：`square(t, DUTY)`

t = -5:0.01:5;
DUTY = 30;
y = square(2*pi*t, DUTY);
plot(t,y);

3. 三角波脉冲信号：`tripuls(t, width, skew)`

t = -5:0.1:5;
width = 2;
skew = 0.5;
y = tripuls(t,width,skew);
plot(t,y);

4. 周期三角波信号：`sawtooth(t, width)`

t = -5:0.01:5;
width = 2;
y = sawtooth(2*pi*t/width);
plot(t,y);

5. 单位阶跃信号：`y=(t>=0)`

t = -5:0.1:5;
y = (t>=0);
plot(t,y);