invztrans - Maple Help

invztrans

inverse Z transform

 Calling Sequence invztrans(f, z, n)

Parameters

 f - expression z - name n - name

Description

 • invztrans finds the inverse Z transformation of $f\left(z\right)$ with respect to n.
 • invztrans can find the inverse Z transform of rational polynomials and a few special functions.

Examples

 > $\mathrm{invztrans}\left(\frac{z}{z-2},z,n\right)$
 ${{2}}^{{n}}$ (1)
 > $\mathrm{invztrans}\left(\frac{6{z}^{2}-13z}{{z}^{2}-5z+6},z,t\right)$
 ${5}{}{{3}}^{{t}}{+}{{2}}^{{t}}$ (2)
 > $\mathrm{invztrans}\left(a\mathrm{exp}\left(\frac{3}{z}\right),z,n\right)$
 $\frac{{a}{}{{3}}^{{n}}}{{n}{!}}$ (3)
 > $\mathrm{invztrans}\left(\mathrm{ztrans}\left(f\left(n\right),n,w\right),w,n\right)$
 ${f}{}\left({n}\right)$ (4)