n),
cos(n), and sums,
products and delays of these signals. Examples of input signal entries are
Permitted input signals are right-sided
(zero for n < 0) time
signals composed of unit steps, u[n], real exponentials,
exp(an), trigonometric functions, sin(n),
cos(n), and sums,
products and delays of these signals. Examples of input signal entries are
(-1)^n*u[n]
2.5*exp(-2*(n-3))*u[n-3]
(9.8/2)*sin(2*n-pi/3)*exp(-n+1)*u[n-2]
(n^0.5)*(sin(n)+cos(2*n))*u[n]
sin(n)+2 defaults to (sin(n)+2)*u[n]
sin(n)*u[-n-2] not right-sided: defaults to 0
Fine Print: For a variety of reasons it is not possible to definitively
decide that the properties hold: only a restricted class of input signals
can be applied, all inputs are zero before n = 0, response plots are shown
on a finite time axis, and so on. Assume these issues are benign, and use a
reasonable number of tests to address each property. It is strongly
recommended that you use a color monitor to view this demonstration.