sumarize8_7_3.m

matlab7.0从入门到精通(光盘内容)

%首先来构造单位函数并对其性能进行验证
syms n
Delta = sym('charfcn[0](n)');            %定义单位函数δ(n)
D0 = subs(Delta,n,0);                  %计算δ(0)
D15 = subs(Delta,n,15);                %计算δ(15)
disp('[D0,D15]');
disp([D0,D15])
syms z 
fn = 2*Delta+6*(1-(1/2)^n);
FZ = ztrans(fn,n,z);
disp('FZ = ');
pretty(FZ)
FZ_n = iztrans(FZ,z,n)