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)

$ _* _3 k/ J  W) }9 b2 c% @5 s# p

wushy32

这个貌似很简单吧。。。

ononsiiii532

单位阶越：
6 \( i" [2 n" g; C/ Xfunction [x,n] = stepseq(n0,n1,n2)
5 ~) n# E) T( c4 L% Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
% ------------------------------------------
% [x,n] = stepseq(n0,n1,n2)
6 t1 o6 `0 G: g/ F4 v%
if ((n0 < n1) | (n0 > n2) | (n1 > n2))
        error('arguments must satisfy n1 <= n0 <= n2')
% v* b, K  ?0 k" Dend
$ I" G1 w, O% Vn = [n1:n2];
! l+ Y8 Y; Q0 S3 C3 F# R# T%x = [zeros(1,(n0-n1)), ones(1,(n2-n0+1))];
x = [(n-n0) >= 0];