信号与系统与maltab求用matlab画出矩形信号 x(t)=u(t)-u(t-2)

wewwqqee

如题
求用matlab画出矩形信号  x(t)=u(t)-u(t-2)
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wushy32

这个貌似很简单吧。。。

ononsiiii532

单位阶越：
function [x,n] = stepseq(n0,n1,n2)
% Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
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% [x,n] = stepseq(n0,n1,n2)
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; Y6 U7 n7 K5 a. H/ G$ l$ uif ((n0 < n1) | (n0 > n2) | (n1 > n2))
! P1 E- {3 W. Z" r/ Y8 {! h        error('arguments must satisfy n1 <= n0 <= n2')
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n = [n1:n2];
%x = [zeros(1,(n0-n1)), ones(1,(n2-n0+1))];
x = [(n-n0) >= 0];